BD435, BD437, BD439,
BD441
Plastic Medium Power
Silicon NPN Transistor
This series of plastic, medium−power silicon NPN transistors can be
used for amplifier and switching applications. Complementary types
are BD438 and BD442.
http://onsemi.com
4.0 AMPERES
POWER TRANSISTORS
NPN SILICON
Features
• Pb−Free Packages are Available*
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
TO−225AA
CASE 77
STYLE 1
Collector−Emitter Voltage
BD435
BD437
BD439
BD441
V
CEO
V
CBO
V
EBO
32
45
60
80
Vdc
3
2
1
Collector−Base Voltage
BD435
BD437
BD439
BD441
32
45
60
80
Vdc
MARKING DIAGRAM
Emitter−Base Voltage
Collector Current
Base Current
5.0
4.0
1.0
Vdc
Adc
Adc
YWW
BD4xxG
I
C
I
B
BD4xx = Device Code
xx = 35, 37, 37T, 39, 41
Total Device Dissipation @ T = 25°C
P
36
288
W
W/°C
C
D
Derate above 25°C
Y
= Year
Operating and Storage Junction
Temperature Range
T , T
–55 to +150
°C
WW
G
= Work Week
= Pb−Free Package
J
stg
THERMAL CHARACTERISTICS
Characteristic
ORDERING INFORMATION
Symbol
Max
Unit
Device
Package
Shipping
Thermal Resistance, Junction−to−Case
q
3.5
°C/W
JC
BD435
TO−225AA
500 Units/Box
500 Units/Box
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.
BD435G
TO−225AA
(Pb−Free)
BD437
TO−225AA
500 Units/Box
500 Units/Box
BD437G
TO−225AA
(Pb−Free)
BD437T
TO−225AA
50 Units/Rail
50 Units/Rail
BD437TG
TO−225AA
(Pb−Free)
BD439
TO−225AA
500 Units/Box
500 Units/Box
BD439G
TO−225AA
(Pb−Free)
BD441
TO−225AA
500 Units/Box
500 Units/Box
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
BD441G
TO−225AA
(Pb−Free)
©
Semiconductor Components Industries, LLC, 2005
1
Publication Order Number:
October, 2005− Rev. 14
BD437/D