Film Capacitors EMI Suppression Capacitors (MKP) Series/Type: B32921C/D ... B32928C/D Date: December 2016 (c) EPCOS AG 2016. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited. EPCOS AG is a TDK Group Company. EMI suppression capacitors (MKP) B32921C/D ... B32928C/D X2 / 305 V AC Typical applications X2 class for interference suppression "Across the line" applications Dimensional drawings Drawing 1 Climatic Max. operating temperature: 110 C Climatic category (IEC 60068-1): 40/105/56 (ENEC10) 40/110/56 (ENEC15) Construction Dielectric: polypropylene (MKP) Plastic case (UL 94 V-0) Epoxy resin sealing (UL 94 V-0) Features Very small dimensions Self-healing properties RoHS-compatible Halogen-free capacitors available on request Drawing 2 Terminals Parallel wire leads, lead-free tinned Special lead lengths available on request Marking Manufacturer's logo, lot number, date code, rated capacitance (coded), cap. tolerance (code letter), rated AC voltage, series number, sub-class (X2), dielectric code (MKP), climatic category, passive flammability category, approvals. Delivery mode Bulk (untaped) Taped (Ammo pack or reel) For taping details, refer to chapter "Taping and packing" Dimensions in mm P1 = 20.3 mm Lead spacing 0.4 Lead diameter d1 0.05 Type Drawing 10 0.6 B32921 1 15 0.8 B32922 1 22.5 0.8 B32923 1 27.5 0.8 B32924 1 37.5 1.0 B32926 1 / 21) 52.5 1.2 B32928 2 1) A few individual types only Please read Cautions and warnings and Important notes at the end of this document. Page 2 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Marking Examples C 10 F C > 10 F Approvals Approval marks Standards Certificate EN 60384-14, IEC 60384-14, Ed. 4 40010694 (approved by VDE) (C 10 F) EN 60384-14, IEC 60384-14, Ed. 4 E97863 (approved by UL) Notes: UL 1414 / UL 1283 E97863 / E157153 CSA C22.2 No.1 / No. 8 E97863 / E157153 (approved by UL) CQC (GB/T 14472-1998) CQC06001015331 / CQC06001016454 (C 10 F) UL 60384-14, CSA E60384-14 E97863 (approved by UL) Effective January 2014, only for EMI supression capacitors: - UL 60384-14 certification replaces both UL 1414 and UL 1283 standards. - CSA C22.2 No. 1 and CSA C22.s No. 8 are replaced by CSA E60384-14. - References like 1414, 1283 are removed from the capacitor marking Capacitors under UL1414, UL1283 produced during or before 2013, are accepted under UL scope. Capacitors under CSA C22.2 No.1 / No. 8 produced during or before 2013, are accepted under cUL scope. Please read Cautions and warnings and Important notes at the end of this document. Page 3 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Overview of available types Lead spacing 10 mm 15 mm 22.5 mm 27.5 mm 37.5 mm 52.5 mm Type B32922 B32923 B32924 B32926 B32928 B32921 CR (F) 0.010 0.022 0.033 0.047 0.068 0.10 0.15 0.22 0.33 0.47 0.68 1.0 1.5 2.2 3.3 3.9 4.7 5.6 6.8 8.2 10 15 20 25 30 Please read Cautions and warnings and Important notes at the end of this document. Page 4 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Ordering codes and packing units Lead CR spacing mm F 10 15 Max. dimensions wxhxl mm 0.010 4.0 x 9.0 x 13.0 0.022 4.0 x 9.0 x 13.0 0.033 4.0 x 9.0 x 13.0 0.047 5.0 x 11.0 x 13.0 0.068 6.0 x 12.0 x 13.0 0.10 6.0 x 12.0 x 13.0 0.033 5.0 x 10.5 x 18.0 0.047 5.0 x 10.5 x 18.0 0.068 5.0 x 10.5 x 18.0 0.10 5.0 x 10.5 x 18.0 0.15 6.0 x 12.0 x 18.0 0.22 7.0 x 12.5 x 18.0 0.33 8.0 x 14.0 x 18.0 0.33 8.5 x 14.5 x 18.0 0.47 9.0 x 17.5 x 18.0 0.68 11.0 x 18.5 x 18.0 Ordering code (composition see below) B32921C3103+*** B32921C3223+*** B32921C3333+*** B32921C3473+*** B32921C3683+*** B32921C3104M*** B32922C3333K*** B32922C3473K*** B32922C3683K*** B32922C3104+*** B32922C3154+*** B32922C3224+*** B32922C3334M*** B32922D3334K*** B32922C3474+*** B32922C3684+*** Straight terminals, Ammo pack pcs./ MOQ 4000 4000 4000 3320 2720 2720 4680 4680 4680 4680 3840 3320 2920 2720 2560 Straight Straight Pins terminals, terminals, Untaped Reel pcs./ MOQ 6800 6800 6800 5200 4400 4400 5200 5200 5200 5200 4400 3600 3000 2800 2800 2200 pcs./ MOQ 4000 4000 4000 4000 4000 4000 4000 4000 4000 4000 4000 4000 2000 2000 2000 1200 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Preferred type MOQ = Minimum Order Quantity, consisting of 4 packing units. Further intermediate capacitance values on request. Composition of ordering code + = Capacitance tolerance code: M = 20% K = 10% = (Closer tolerances on request) Please read Cautions and warnings and Important notes at the end of this document. *** = Packaging code: 289 = Straight terminals, Ammo pack 189 = Straight terminals, Reel 240 = Crimped down from lead spacing 10 mm to 7.5 mm, Ammo pack 140 = Crimped down from lead spacing 10 mm to 7.5 mm, Reel 255 = Crimped down from lead spacing 15 mm to 7.5 mm, Ammo pack 155 = Crimped down from lead spacing 15 mm to 7.5 mm, Reel 003 = Straight terminals, untaped (lead length 3.2 0.3 mm) 000 = Straight terminals, untaped (lead length 6 - 1 mm) Page 5 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Ordering codes and packing units Lead CR spacing mm F 22.5 27.5 0.22 0.33 0.33 0.47 0.68 1.0 1.5 2.2 0.68 1.0 1.5 2.2 3.3 3.3 4.7 4.7 5.6 Max. dimensions wxhxl mm Ordering code (composition see below) Straight terminals, Ammo pack pcs./ MOQ 6.0 x 15.0 x 26.5 B32923C3224+*** 2720 6.0 x 15.0 x 26.5 B32923C3334M*** 2720 7.0 x 16.0 x 26.5 B32923D3334K*** 2320 8.5 x 16.5 x 26.5 B32923C3474+*** 1920 10.5 x 16.5 x 26.5 B32923C3684+*** 1560 11.0 x 20.5 x 26.5 B32923C3105+*** 1480 12.0 x 22.0 x 26.5 B32923C3155M*** 14.5 x 29.5 x 26.5 B32923C3225+*** 11.0 x 19.0 x 31.5 B32924C3684+*** 11.0 x 19.0 x 31.5 B32924C3105+*** 12.5 x 21.5 x 31.5 B32924C3155+*** 14.0 x 24.5 x 31.5 B32924C3225+*** 16.0 x 32.0 x 31.5 B32924D3335K*** 18.0 x 27.5 x 31.5 B32924C3335M*** 18.0 x 33.0 x 31.5 B32924C3475M*** 21.0 x 31.0 x 31.5 B32924D3475K*** 22.0 x 36.5 x 31.5 B32924C3565+*** Straight Straight Pins terminals, terminals, Untaped Reel pcs./ MOQ 2800 2800 2400 2000 1600 1400 1400 1400 1200 pcs./ MOQ 2880 2880 2520 2040 2160 2040 1800 1040 1280 1280 1120 1040 880 800 800 720 784 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Preferred type MOQ = Minimum Order Quantity, consisting of 4 packing units. Further intermediate capacitance values on request. Composition of ordering code + = Capacitance tolerance code: M = 20% K = 10% = (Closer tolerances on request) Please read Cautions and warnings and Important notes at the end of this document. *** = Packaging code: 289 = Straight terminals, Ammo pack 189 = Straight terminals, Reel 240 = Crimped down from lead spacing 10 mm to 7.5 mm, Ammo pack 140 = Crimped down from lead spacing 10 mm to 7.5 mm, Reel 255 = Crimped down from lead spacing 15 mm to 7.5 mm, Ammo pack 155 = Crimped down from lead spacing 15 mm to 7.5 mm, Reel 003 = Straight terminals, untaped (lead length 3.2 0.3 mm) 000 = Straight terminals, untaped (lead length 6 - 1 mm) Page 6 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Ordering codes and packing units Lead CR spacing mm F 37.5 52.5 2.2 3.3 3.9 4.7 5.6 6.8 8.2 10 15 15 20 25 30 Max. dimensions wxhxl mm 14.0 x 25.0 x 41.5 16.0 x 28.5 x 41.5 16.0 x 28.5 x 41.5 18.0 x 32.5 x 41.5 18.0 x 32.5 x 41.5 20.0 x 39.5 x 41.5 20.0 x 39.5 x 41.5 28.0 x 42.5 x 41.5 30.0 x 45.0 x 42.0 33.0 x 48.0 x 42.0 30.0 x 45.0 x 57.5 35.0 x 50.0 x 57.5 35.0 x 50.0 x 57.5 Ordering code (composition see below) B32926C3225+*** B32926C3335+*** B32926C3395+*** B32926C3475+*** B32926C3565+*** B32926C3685+*** B32926C3825+*** B32926C3106+*** B32926C3156M*** B32926D3156+*** B32928C3206+*** B32928C3256+*** B32928C3306M*** Straight terminals, Ammo pack pcs./ MOQ Straight Straight Pins terminals, terminals, Untaped Reel pcs./ MOQ pcs./ MOQ 1380 800 800 720 720 640 640 440 400 180 280 108 108 2 2 2 2 2 2 2 2 2 4 4 4 4 Preferred type MOQ = Minimum Order Quantity, consisting of 4 packing units. Further intermediate capacitance values on request. Composition of ordering code + = Capacitance tolerance code: M = 20% K = 10% = (Closer tolerances on request) Please read Cautions and warnings and Important notes at the end of this document. *** = Packaging code: 289 = Straight terminals, Ammo pack 189 = Straight terminals, Reel 240 = Crimped down from lead spacing 10 mm to 7.5 mm, Ammo pack 140 = Crimped down from lead spacing 10 mm to 7.5 mm, Reel 255 = Crimped down from lead spacing 15 mm to 7.5 mm, Ammo pack 155 = Crimped down from lead spacing 15 mm to 7.5 mm, Reel 003 = Straight terminals, untaped (lead length 3.2 0.3 mm) 000 = Straight terminals, untaped (lead length 6 - 1 mm) Page 7 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Technical data Reference standard: IEC / UL 60384-14. All data given at T = 20 C unless otherwise specified. Max. operating temperature Top,max Dissipation factor tan (in 10-3) at 20 C (upper limit values) +110 C Insulation resistance Rins or time constant = CR Rins CR0.33 F CR0.1 F 0.1F<CR 2.2 F CR >2.2 F at 1 kHz 100 kHz 1.0 5.0 1.0 2.0 CR>0.33 F 100 000 M 30 000 s at 20 C, rel. humidity 65% (minimum as-delivered values) DC test voltage 2121 V, 2 s (C 10 F) / 1312 V, 2 s (C > 10 F) The repetition of this DC voltage test may damage the capacitor. Special care must be taken in case of use several capacitors in a parallel configuration. Passive flammability category Maximum continuous DC voltage VDC B 630 V Maximum continuous AC voltage VAC Rated AC voltage (IEC 60384-14) Operating AC voltage Vop at high temperature 310 V (50/60 Hz) Damp heat test Limit values after damp heat test 56 days / 40 C / 93% relative humidity Capacitance change C/C 5% Dissipation factor change tan 5.10-3 (at 1 kHz) 1.0 10-3 (at 10 kHz) Insulation resistance Rins or 50% of minimum time constant = CR Rins as-delivered values Please read Cautions and warnings and Important notes at the end of this document. 305 V (50/60 Hz) TA 110 C TA 110 C Page 8 of 24 Vop = VAC (continuously) Vop = 1.25 VAC (1000 h) B32921C/D ... B32928C/D X2 / 305 V AC Pulse handling capability "dV/dt" represents the maximum permissible voltage change per unit of time for non-sinusoidal voltages, expressed in V/s. "k0" represents the maximum permissible pulse characteristic of the waveform applied to the capacitor, expressed in V2/s. Note: The values of dV/dt and k0 provided below must not be exceeded in order to avoid damaging the capacitor. dV/dt and k0 values Lead spacing dV/dt in V/s k0 in V2/s 10 mm 475 408500 15 mm 340 292400 22.5 mm 170 146200 Impedance Z versus frequency f (typical values) Please read Cautions and warnings and Important notes at the end of this document. Page 9 of 24 27.5 mm 120 103200 37.5 mm 80 68800 52.5 mm 50 43200 B32921C/D ... B32928C/D X2 / 305 V AC Permissible AC current IRMS versus frequency f (for sinusoidal waveforms TA 90 C and ESR < 100% from receipt condition) Lead spacing 10 mm Lead spacing 15 mm Lead spacing 22.5 mm Lead spacing 27.5 mm Please read Cautions and warnings and Important notes at the end of this document. Page 10 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Permissible AC current IRMS versus frequency f (for sinusoidal waveforms TA 90 C and ESR < 100% from receipt condition) Lead spacing 37.5 mm Please read Cautions and warnings and Important notes at the end of this document. Lead spacing 52.5 mm Page 11 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Testing and Standards Test Electrical Parameters Reference IEC 60384-14 Conditions of test Voltage Proof: Between terminals: 4.3 x VR (DC), 1 min Terminals and enclosure: 2 VR + 1500 V AC Insulation resistance, RINS Capacitance, C Dissipation factor, tan Robustness IEC 60068-2-21 Tensile strength (test Ua1) of terminaWire diameter Tensile tions force 0.5 < d1 0.8 mm 10 N 0.8 < d1 1.25 mm 20 N Resistance to IEC 60068-2-20, Solder bath temperature at test Tb, 260 5 C, immersion for soldering method 1A 10 seconds heat Performance requirements Within specified limits Capacitance and tan within specified limits C/C0 5% tan within specified limits Rapid change of temperature IEC 60384-14 TA = lower category temperature No visible damage TB = upper category temperature |C/C0| 5% Five cycles, duration t = 30 min. tan within specified limits Damp Heat Steady State IEC 60384-14 Test Ca 40 C / 93% RH / 56 days Impulse test Endurance IEC 60384-14 3 impulses TB / 1.25 VR / 1000 hours, 1000 Vrms for 0.1 s every hour Passive flammability IEC 60384-14 Flame applied for a period of time depending on capacitor volume B Active flammability IEC 60384-14 20 discharges at 2.5 kV + VR The cheesecloth shall not burn with a flame Please read Cautions and warnings and Important notes at the end of this document. Page 12 of 24 No visible damage |C/C0| 5% | tan | 0.008 for C 1 F | tan | 0.005 for C > 1 F Voltage proof RINS 50% of initial limit No visible damage |C/C0| 10% | tan | 0.008 for C 1 F | tan | 0.005 for C > 1 F Voltage proof RINS 50% of initial limit B32921C/D ... B32928C/D X2 / 305 V AC Mounting guidelines 1 Soldering 1.1 Solderability of leads The solderability of terminal leads is tested to IEC 60068-2-20, test Ta, method 1. Before a solderability test is carried out, terminals are subjected to accelerated ageing (to IEC 60068-2-2, test Ba: 4 h exposure to dry heat at 155 C). Since the ageing temperature is far higher than the upper category temperature of the capacitors, the terminal wires should be cut off from the capacitor before the ageing procedure to prevent the solderability being impaired by the products of any capacitor decomposition that might occur. Solder bath temperature 235 5 C Soldering time 2.0 0.5 s Immersion depth 2.0 +0/0.5 mm from capacitor body or seating plane Evaluation criteria: Visual inspection Wetting of wire surface by new solder 90%, free-flowing solder 1.2 Resistance to soldering heat Resistance to soldering heat is tested to IEC 60068-2-20, test Tb, method 1A. Conditions: Series Solder bath temperature Soldering time MKT boxed (except 2.5 x 6.5 x 7.2 mm) 260 5 C coated uncoated (lead spacing > 10 mm) MFP MKP (lead spacing > 7.5 mm) MKT boxed (case 2.5 x 6.5 x 7.2 mm) MKP (lead spacing 7.5 mm) MKT uncoated (lead spacing 10 mm) insulated (B32559) Please read Cautions and warnings and Important notes at the end of this document. Page 13 of 24 10 1 s 5 1 s <4s recommended soldering profile for MKT uncoated (lead spacing 10 mm) and insulated (B32559) B32921C/D ... B32928C/D X2 / 305 V AC Immersion depth 2.0 +0/0.5 mm from capacitor body or seating plane Shield Heat-absorbing board, (1.5 0.5) mm thick, between capacitor body and liquid solder Evaluation criteria: Visual inspection C/C0 tan Please read Cautions and warnings and Important notes at the end of this document. No visible damage 2% for MKT/MKP/MFP 5% for EMI suppression capacitors As specified in sectional specification Page 14 of 24 B32921C/D ... B32928C/D X2 / 305 V AC 1.3 General notes on soldering Permissible heat exposure loads on film capacitors are primarily characterized by the upper category temperature Tmax. Long exposure to temperatures above this type-related temperature limit can lead to changes in the plastic dielectric and thus change irreversibly a capacitor's electrical characteristics. For short exposures (as in practical soldering processes) the heat load (and thus the possible effects on a capacitor) will also depend on other factors like: Pre-heating temperature and time Forced cooling immediately after soldering Terminal characteristics: diameter, length, thermal resistance, special configurations (e.g. crimping) Height of capacitor above solder bath Shadowing by neighboring components Additional heating due to heat dissipation by neighboring components Use of solder-resist coatings The overheating associated with some of these factors can usually be reduced by suitable countermeasures. For example, if a pre-heating step cannot be avoided, an additional or reinforced cooling process may possibly have to be included. EPCOS recommendations As a reference, the recommended wave soldering profile for our film capacitors is as follows: Please read Cautions and warnings and Important notes at the end of this document. Page 15 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Body temperature should follow the description below: MKP capacitor During pre-heating: Tp 110 C During soldering: Ts 120 C, ts 45 s MKT capacitor During pre-heating: Tp 125 C During soldering: Ts 160 C, ts 45 s When SMD components are used together with leaded ones, the film capacitors should not pass into the SMD adhesive curing oven. The leaded components should be assembled after the SMD curing step. Leaded film capacitors are not suitable for reflow soldering. In order to ensure proper conditions for manual or selective soldering, the body temperature of the capacitor (Ts) must be 120 C. One recommended condition for manual soldering is that the tip of the soldering iron should be < 360 C and the soldering contact time should be no longer than 3 seconds. For uncoated MKT capacitors with lead spacings 10 mm (B32560/B32561) the following measures are recommended: pre-heating to not more than 110 C in the preheater phase rapid cooling after soldering Please refer to EPCOS Film Capacitor Data Book in case more details are needed. Please read Cautions and warnings and Important notes at the end of this document. Page 16 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Application note for the different possible X1 / X2 positions In parallel with the powerline In series with the powerline (i.e. capacitive power supply) Typical Applications: Standard X2 are used parallel over the mains for reducing electromagnetic interferences coming from the grid. For such purposes they must meet the applicable EMC directives and standards. Typical Applications: Power meters ECUs for white goods and household appliances Different sensor applications Severe ambient conditions Basic circuit Basic circuit Required features Required features High capacitance stability over the lifetime Narrow tolerances for a controlled current supply Recommended EPCOS product series B3293* (305 V AC) heavy duty with EN approval for X2 (UL Q1/2010) B3265* MKP series standard MKP capacitor without safety approvals B3267*L MKP series standard MKP capacitor without safety approvals B3292*H/J (305 V AC), severe ambient condition, approved as X2 Please read Cautions and warnings and Important notes at the end of this document. Standard safety approvals (ENEC, UL, CSA, CQC) High pulse load capability Withstand surge voltages Recommended EPCOS product series B3292*C/D (305 V AC) standard series, approved as X2 B3291* (330 V AC), approved as X1 B3291* (530 V AC), approved as X1 B3292*H/J (305 V AC), severe ambient condition, approved as X2 Page 17 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Cautions and warnings Do not exceed the upper category temperature (UCT). Do not apply any mechanical stress to the capacitor terminals. Avoid any compressive, tensile or flexural stress. Do not move the capacitor after it has been soldered to the PC board. Do not pick up the PC board by the soldered capacitor. Do not place the capacitor on a PC board whose PTH hole spacing differs from the specified lead spacing. Do not exceed the specified time or temperature limits during soldering. Avoid external energy inputs, such as fire or electricity. Avoid overload of the capacitors. The table below summarizes the safety instructions that must always be observed. A detailed description can be found in the relevant sections of the chapters "General technical information" and "Mounting guidelines". Topic Storage conditions Flammability Resistance to vibration Safety information Reference chapter "General technical information" Make sure that capacitors are stored within the specified 4.5 range of time, temperature and humidity conditions. "Storage conditions" Avoid external energy, such as fire or electricity (passive 5.3 flammability), avoid overload of the capacitors (active "Flammability" flammability) and consider the flammability of materials. Do not exceed the tested ability to withstand vibration. 5.2 The capacitors are tested to IEC 60068-2-6. "Resistance to EPCOS offers film capacitors specially designed for vibration" operation under more severe vibration regimes such as those found in automotive applications. Consult our catalog "Film Capacitors for Automotive Electronics". Topic Safety information Soldering Do not exceed the specified time or temperature limits during soldering. Use only suitable solvents for cleaning capacitors. When embedding finished circuit assemblies in plastic resins, chemical and thermal influences must be taken into account. Caution: Consult us first, if you also wish to embed other uncoated component types! Cleaning Embedding of capacitors in finished assemblies Please read Cautions and warnings and Important notes at the end of this document. Page 18 of 24 Reference chapter "Mounting guidelines" 1 "Soldering" 2 "Cleaning" 3 "Embedding of capacitors in finished assemblies" B32921C/D ... B32928C/D X2 / 305 V AC Design of EMI Capacitors EPCOS EMI capacitors use polypropylene (PP) film metalized with a thin layer of Zinc (Zn). The following key points have made this design suitable to IEC/UL testing, holding a minimum size. Overvoltage AC capability with very high temperature Endurance test of IEC60384-14 (4th edition) / UL60384-14 (2nd edition) must be performed at 1.25 x VR at maximum temperature, during 1000 hours, with a capacitance drift less than 10%. Higher breakdown voltage withstanding if compared to other film metallizations, like Aluminum. IEC60384-14 (4th edition) / UL60384-14 (2nd edition) establishes high voltage tests performed at 4.3 x VR 1 minute, impulse testing at 2500 V for C= 1 F and active flammability tests. Damp heat steady state: 40 C/ 93% RH / 56 days. (without voltage or current load) Effect of humidity on capacitance stability Long contact of a film capacitor with humidity can produce irreversible effects. Direct contact with liquid water or excess exposure to high ambient humidity or dew will eventually remove the film metallization and thus destroy the capacitor. Plastic boxed capacitors must be properly tested in the final application at the worst expected conditions of temperature and humidity in order to check if any parameter drift may provoke a circuit malfunction. In case of penetration of humidity through the film, the layer of Zinc can be degraded, specially under AC operation (change of polarity), accelerated by the temperature, provoking an increment of the serial resistance of the electrode and eventually a reduction of the capacitance value. For DC operation, the parameter drift is much less. Plastic boxes and resins can not protect 100% against humidity. Metal enclosures, resin potting or coatings or similar measures by customers in their applications will offer additional protection against humidity penetration. Display of ordering codes for EPCOS products The ordering code for one and the same product can be represented differently in data sheets, data books, other publications and the website of EPCOS, or in order-related documents such as shipping notes, order confirmations and product labels. The varying representations of the ordering codes are due to different processes employed and do not affect the specifications of the respective products. Detailed information can be found on the Internet under www.epcos.com/orderingcodes. Please read Cautions and warnings and Important notes at the end of this document. Page 19 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Symbols and terms Symbol C A C C CR C C/C C/CR dt t T tan V dV/dt V/t E ESL ESR f f1 f2 fr FD FT i IC English Heat transfer coefficient Temperature coefficient of capacitance Capacitor surface area Humidity coefficient of capacitance Capacitance Rated capacitance Absolute capacitance change Relative capacitance change (relative deviation of actual value) Capacitance tolerance (relative deviation from rated capacitance) Time differential Time interval Absolute temperature change (self-heating) Absolute change of dissipation factor Absolute voltage change Time differential of voltage function (rate of voltage rise) Voltage change per time interval Activation energy for diffusion Self-inductance Equivalent series resistance Frequency Frequency limit for reducing permissible AC voltage due to thermal limits German Warmeubergangszahl Temperaturkoeffizient der Kapazitat Kondensatoroberflache Feuchtekoeffizient der Kapazitat Kapazitat Nennkapazitat Absolute Kapazitatsanderung Relative Kapazitatsanderung (relative Abweichung vom Ist-Wert) Kapazitatstoleranz (relative Abweichung vom Nennwert) Differentielle Zeit Zeitintervall Absolute Temperaturanderung (Selbsterwarmung) Absolute Anderung des Verlustfaktors Absolute Spannungsanderung Differentielle Spannungsanderung (Spannungsflankensteilheit) Spannungsanderung pro Zeitintervall Aktivierungsenergie zur Diffusion Eigeninduktivitat Ersatz-Serienwiderstand Frequenz Grenzfrequenz fur thermisch bedingte Reduzierung der zulassigen Wechselspannung Frequency limit for reducing permissible Grenzfrequenz fur strombedingte AC voltage due to current limit Reduzierung der zulassigen Wechselspannung Resonant frequency Resonanzfrequenz Thermal acceleration factor for diffusion Therm. Beschleunigungsfaktor zur Diffusion Derating factor Deratingfaktor Current (peak) Stromspitze Category current (max. continuous Kategoriestrom (max. Dauerstrom) current) Please read Cautions and warnings and Important notes at the end of this document. Page 20 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Symbol IRMS iz k0 LS 0 test Pdiss Pgen Q R R Ri Rins RP RS S t T tan tan D tan P tan S TA Tmax Tmin tOL Top TR Tref tSL English (Sinusoidal) alternating current, root-mean-square value Capacitance drift Pulse characteristic Series inductance Failure rate Constant failure rate during useful service life Failure rate, determined by tests Dissipated power Generated power Heat energy Density of water vapor in air Universal molar constant for gases Ohmic resistance of discharge circuit Internal resistance Insulation resistance Parallel resistance Series resistance severity (humidity test) Time Temperature Time constant Dissipation factor Dielectric component of dissipation factor Parallel component of dissipation factor Series component of dissipation factor Temperature of the air surrounding the component Upper category temperature Lower category temperature Operating life at operating temperature and voltage Operating temperature, TA + T Rated temperature Reference temperature Reference service life Please read Cautions and warnings and Important notes at the end of this document. German (Sinusformiger) Wechselstrom Inkonstanz der Kapazitat Impulskennwert Serieninduktivitat Ausfallrate Konstante Ausfallrate in der Nutzungsphase Experimentell ermittelte Ausfallrate Abgegebene Verlustleistung Erzeugte Verlustleistung Warmeenergie Dichte von Wasserdampf in Luft Allg. Molarkonstante fur Gas Ohmscher Widerstand des Entladekreises Innenwiderstand Isolationswiderstand Parallelwiderstand Serienwiderstand Scharfegrad (Feuchtetest) Zeit Temperatur Zeitkonstante Verlustfaktor Dielektrischer Anteil des Verlustfaktors Parallelanteil des Verlfustfaktors Serienanteil des Verlustfaktors Temperatur der Luft, die das Bauteil umgibt Obere Kategorietemperatur Untere Kategorietemperatur Betriebszeit bei Betriebstemperatur und -spannung Beriebstemperatur, TA + T Nenntemperatur Referenztemperatur Referenz-Lebensdauer Page 21 of 24 B32921C/D ... B32928C/D X2 / 305 V AC Symbol VAC VC VC,RMS English AC voltage Category voltage Category AC voltage VCD Vch VDC VFB Vi Vo Vop Vp Vpp VR Corona-discharge onset voltage Charging voltage DC voltage Fly-back capacitor voltage Input voltage Output voltage Operating voltage Peak pulse voltage Peak-to-peak voltage Impedance Rated voltage Amplitude of rated AC voltage R VRMS German Wechselspannung Kategoriespannung (Sinusformige) Kategorie-Wechselspannung Teilentlade-Einsatzspannung Ladespannung Gleichspannung Spannung (Flyback) Eingangsspannung Ausgangssspannung Betriebsspannung Impuls-Spitzenspannung Spannungshub Nennspannung Amplitude der Nenn-Wechselspannung VSC Vsn (Sinusoidal) alternating voltage, root-mean-square value S-correction voltage Snubber capacitor voltage Z Impedance Spannung bei Anwendung "S-correction" Spannung bei Anwendung "Beschaltung" Scheinwiderstand Lead spacing Rasterma Please read Cautions and warnings and Important notes at the end of this document. (Sinusformige) Wechselspannung Page 22 of 24 Important notes The following applies to all products named in this publication: 1. Some parts of this publication contain statements about the suitability of our products for certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned. We nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitability of our products for a particular customer application. As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar with them than the customers themselves. For these reasons, it is always ultimately incumbent on the customer to check and decide whether an EPCOS product with the properties described in the product specification is suitable for use in a particular customer application. 2. We also point out that in individual cases, a malfunction of electronic components or failure before the end of their usual service life cannot be completely ruled out in the current state of the art, even if they are operated as specified. In customer applications requiring a very high level of operational safety and especially in customer applications in which the malfunction or failure of an electronic component could endanger human life or health (e.g. in accident prevention or lifesaving systems), it must therefore be ensured by means of suitable design of the customer application or other action taken by the customer (e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the event of malfunction or failure of an electronic component. 3. The warnings, cautions and product-specific notes must be observed. 4. In order to satisfy certain technical requirements, some of the products described in this publication may contain substances subject to restrictions in certain jurisdictions (e.g. because they are classed as hazardous). Useful information on this will be found in our Material Data Sheets on the Internet (www.epcos.com/material). Should you have any more detailed questions, please contact our sales offices. 5. We constantly strive to improve our products. Consequently, the products described in this publication may change from time to time. The same is true of the corresponding product specifications. Please check therefore to what extent product descriptions and specifications contained in this publication are still applicable before or when you place an order. We also reserve the right to discontinue production and delivery of products. Consequently, we cannot guarantee that all products named in this publication will always be available. The aforementioned does not apply in the case of individual agreements deviating from the foregoing for customer-specific products. 6. Unless otherwise agreed in individual contracts, all orders are subject to the current version of the "General Terms of Delivery for Products and Services in the Electrical Industry" published by the German Electrical and Electronics Industry Association (ZVEI). Page 23 of 24 Important notes 7. The trade names EPCOS, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CSSP, CTVS, DeltaCap, DigiSiMic, DSSP, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD, MKK, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PQSine, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, TFAP, ThermoFuse, WindCap are trademarks registered or pending in Europe and in other countries. Further information will be found on the Internet at www.epcos.com/trademarks. Page 24 of 24