3
AVXWorking Breakdown Clamping Peak Transient
Part Number Voltage Voltage Voltage Current Energy Capacitance Inductance
Symbol VWM VBVCIpeak Etrans CL
Units Volts Volts Volts Amp Joules pF nH
(max.) (max.) (max.) (max.) (typ.) (typ.)
Test Condition <50µA 1mA DC 8/20µS† 8/20µs 10/1000µS 0.5Vrms @: di/dt = 100mA/nS
1MHz
VC040205X150_ _ 5.6 7.6 - 9.3 15.5 20 0.05 360 <1.0
VC040209X200_ _ 9.0 11.0 - 14.0 20.0 20 0.05 230 <1.0
VC040214X300_ _ 14.0 16.5 - 20.3 30.0 20 0.05 120 <1.0
VC040218X400_ _ 18.0 22.9 - 28.0 40.0 20 0.05 90 <1.0
AVXWorking Breakdown Clamping Peak Transient
Part Number Voltage Voltage Voltage Current Energy Capacitance Inductance
Symbol VWM VBVCIpeak Etrans CL
Units Volts Volts Volts Amp Joules pF nH
(max.) (max.) (max.) (max.) (typ.) (typ.)
Test Condition <10µA <1µA DC 8/20µS†8/20µs 10/1000µS 0.5Vrms @: di/dt =
1 MHz 100mA/ns
VC04LC18V500 _ _ ≤18.0 N/A <50.0 15 0.02 40 <1.0
VOLTAGES = 5.6, 9, 14 OR 18 VDC
0402 SURFACE MOUNT
Dimensions: Actual Size:
Length 1.0 ± 0.10mm (0.040" ± 0.004")
Width 0.5 ± 0.10mm (0.020" ± 0.004")
Thickness 0.6mm Max. (0.024")
Termination Band Width 0.25 ± 0.15mm (0.010" ± 0.006")
Termination Separation 0.3mm Min. (0.012")
Termination Finish X = Pt/Pd/Ag (Non-Plated)
P = Ni/Sn Alloy (Plated) - Contact Factory for Availability
VWM—Maximum steady-state DC operating voltage the varistor can maintain and not exceed 50µA leakage current
VB—Voltage across the device measured at 1mA DC current
VC—Maximum peak voltage across the varistor measured at a specified pulse current and waveform
†Transient Energy Rating Pulse Current & Waveform
<0.05 Joule 1A 8/20µS
Ipeak—Maximum peak current which may be applied with the specified waveform without device failure
Etran—Maximum energy which may be dissipated with the specified waveform without device failure
C—Device capacitance measured with zero volt bias 0.5Vrms and 1MHz
L—Device inductance measured with a current edge rate of 100 mA/nS
Dimensions: Millimeters (Inches)
TransGuard®
AVX Multilayer Ceramic Transient Voltage Suppressors
Termination Finish: X = Pt/Pd/Ag (Non-Plated)
P = Ni/Sn Alloy (Plated) Contact Factory for Availability
Packaging (Pcs/Reel): see page 2
Termination Finish: X = Pt/Pd/Ag (Non-Plated)
P = Ni/Sn Alloy (Plated) Contact Factory for Availability
Packaging (Pcs/Reel): see page 2
StaticGuard
Note: Details of Performance Curves shown on page 4.
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TransGuard®
AVX Multilayer Ceramic Transient Voltage Suppressors
Multilayer construction and improved grain structure result in
excellent transient clamping characteristics up to 20 amps
peak current, while maintaining very low leakage currents
under DC operating conditions. The VI curves below show the
voltage/current characteristics for the 5.6V, 9V, 14V, 18V and
low capacitance StaticGuard parts with currents ranging from
parts of a micro amp to tens of amps.
Traditionally varistors have suffered degradation of electrical
performance with repeated high current pulses resulting in
decreased breakdown voltage and increased leakage cur-
rent. It has been suggested that irregular intergranular
boundaries and bulk material result in restricted current
paths and other non-Schottky barrier paralleled conduction
paths in the ceramic. Repeated pulsing of TransGuard tran-
sient voltage suppressors with 150Amp peak 8 x 20µS
waveforms shows negligible degradation in breakdown
voltage and minimal increases in leakage current. This
does not mean that TransGuard suppressors do not suffer
degradation, but it occurs at much higher current.
TYPICAL PERFORMANCE CURVES (0402 CHIP SIZE)
VOLTAGE/CURRENT CHARACTERISTICS PULSE DEGRADATION
VC04LC18V500
VC040214X300
VC040218X400
VC040205X150
VC040209X200
100
80
60
40
20
0
10-9 10-7 10-5 10-3 10-1 10 103105
Current (A)
Voltage (V)
VC04LC18V500
VC040214X300
VC040218X400
VC040205X150
VC040209X200
10 100 1000 10000
8kV ESD STRIKES
BREAKDOWN VOLTAGE (Vb)
35
30
25
20
15
10
5
VC040205X
VC04LC18V
VC040214X
VC040218X
VC040209X
0
-5
-10
-15
-20
-25
0.01 0.1 1 10
Frequency (GHz)
dB
VC04LC18V500
VC040214X300
VC040218X400
VC040205X150
VC040209X200
1300
1200
10 100 1000
IMPULSE DURATION (µS)
PEAK POWER (W)
1100
1000
900
800
700
600
500
400
300
200
100
0
PEAK POWER VS PULSE DURATION
INSERTION LOSS CHARACTERISTICS
ESD TEST OF 0402 PARTS
