To learn more about ON Semiconductor, please visit our website at
www.onsemi.com
Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers
will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor
product management systems do not have the ability to manage part nomenclature that utilizes an underscore
(_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain
device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated
device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please
email any questions regarding the system integration to Fairchild_questions@onsemi.com.
Is Now Part of
ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right
to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON
Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON
Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s
technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA
Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended
or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out
of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor
is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
©2000 Fairchild Semiconductor International Rev. A, February 2000
BD243/A/B/C
NPN Epitaxial Silicon Transistor
Absolute Maximum Ratings TC=25°C unless otherwise noted
Electrical Characteristics TC=25°C unless otherwise noted
* Pulse Test :PW=300µs, duty Cycle<20% Pulsed
Symbol Parameter Value Units
VCBO Collector-Base Vol tage : BD24 3
: BD243A
: BD243B
: BD243C
45
60
80
100
V
V
V
V
VCEO Collector-Emitter Voltage: BD 243
: BD243A
: BD243B
: BD243C
45
60
80
100
V
V
V
V
VEBO Emitter-Base Voltage 5 V
IC Collector Current (DC) 6 A
ICP *Collector Current (Pulse) 10 A
IB Base Current 2 A
PC Collector Dissipation (TC=25°C) 65 W
TJ Junction Temperature 150 °C
TSTG Storage Temperature - 65 ~ 150 °C
Symbol Parameter Test Condit ion Min. Typ. Max. Units
VCEO(sus) * Collector-Emit ter Sustai ni ng Voltage
: BD2 43
: BD243A
: BD243B
: BD243C
IC=30mA , IB=0
45
60
80
100
V
V
V
V
ICEO Collect or Cut- of f Current : BD243/243A
: BD243B/243C VCE = 30 V, IB = 0
VCE = 60 V, IB = 0 0.7
0.7 mA
mA
ICES Collector Cut-off Current : BD243
: BD243A
: BD243B
: BD243C
VCE = 45 V, VBE = 0
VCE = 60 V, VBE = 0
VCE = 80 V, VBE = 0
VCE = 10 0V, VBE = 0
0.4
0.4
0.4
0.4
mA
mA
mA
mA
IEBO Emitter Cut-off Current VEB = 5V, IC = 0 1 mA
hFE *DC Current Gain VCE = 4V, IC = 0.3A
VCE = 4V, IC = 3A 30
15
VCE(sat) *Collector-Emitt er Satur ation Voltage IC = 6A, IB = 1A 1.5 V
VBE(on) *Base-Emitter O N Voltage VCE = 4V, IC = 6A 2 V
BD243/A/B/C
Medium Power Linear and Switching
Applications
• Complement to BD244, BD244A, BD244B and BD244C respectively
1.Base 2.Collector 3.Emitter
1TO-220
©2000 Fairchild Semiconductor International
BD243/A/B/C
Rev. A, February 2000
Typical Characteristics
Figure 1. DC current Gain Figure 2. Base-Emitter Saturation Voltage
Figure 3. Collector-Emitter Saturation Voltage Figure 4. Safe Operating Area
Figure 5. Power Derating
0.01 0.1 1 10
10
100
1000
VCE = 2V
hFE, DC CURRENT GAIN
IC[A], COLLECTOR CURRENT
0.1 1 10
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
IC = 10.1 IB
VBE(sat)(V), SATURATION VOLTAGE
IC[A], COLLECTOR CURRENT
0.1 1 10
0.01
0.1
1
IC = 10.1 IB
VBE(sat)(V), SATURATION VOLTAGE
IC[A], COLLECTOR CURRENT
110100
0.1
1
10
100
BD243
BD243A
BD243B
BD243C
DC
10ms
1ms
10µs
100µs
IC(max)
IC[A], COLLECT OR CURRENT
VCE[V], COLLECTOR-EMITTE R VOLTAGE
0 25 50 75 100 125 150 175 200
0
10
20
30
40
50
60
70
80
PC[W], POWER DISSIPATION
T[oC], CA SE TEM PER ATURE
4.50
±0.20
9.90
±0.20
1.52
±0.10
0.80
±0.10
2.40
±0.20
10.00
±0.20
1.27
±0.10
ø3.60
±0.10
(8.70)
2.80
±0.10
15.90
±0.20
10.08
±0.30
18.95MAX.
(1.70)
(3.70)(3.00)
(1.46)
(1.00)
(45°)
9.20
±0.20
13.08
±0.20
1.30
±0.10
1.30
+0.10
–0.05
0.50
+0.10
–0.05
2.54TYP
[2.54
±0.20
]2.54TYP
[2.54
±0.20
]
TO-220
Package Demensions
©2000 Fairchild Semiconductor International Rev. A, February 2000
BD243/A/B/C
Dimensions in Millimeters
©2000 Fairchild Semiconductor International Rev. E
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is
not intended to be an exhaustive list of all such trademarks.
ACEx™
Bottomless™
CoolFET™
CROSSVOLT™
E2CMOS™
FACT™
FACT Quiet Series™
FAST®
FASTr™
GTO™
HiSeC™
ISOPLANAR™
MICROWIRE™
POP™
PowerTrench®
QFET™
QS™
Quiet Series™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
SyncFET™
TinyLogic™
UHC™
VCX™
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;
NEITHER DOES IT CONVEY A NY LICENSE UNDER ITS PATENT RIGHTS, N OR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR
INTERNATIONAL.
As used herein:
1. Life support devices or systems are devic es or syst em s
which, (a) ar e intended for surgical implant into the body,
or (b) support or sustain life, or (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in significant injury to the user.
2. A critical component is any component of a lif e support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status Definition
Advance Information Formative or In
Design This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
Preliminary First Production This datasheet contains preliminary data, and
supplementary data will be published at a later date.
Fairchild Semiconduct or reserv es the right to make
changes at any time without notice in order to improve
design.
No Identification Needed Full Production This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
Obsolete Not In Production This datasheet contains specifications on a product
that has been discontinued by Fairchild semiconductor.
The datasheet is printed for reference information only.
www.onsemi.com
1
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5817−1050
www.onsemi.com
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
19521 E. 32nd Pkwy, Aurora, Colorado 80011 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
© Semiconductor Components Industries, LLC
