Data Sheet
KSH122 / KSH122I — NPN Silicon Darlington Transistor
www.onsemi.com
2 
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at T
C
 = 25°C unless otherwise noted.
Electrical Characteristics 
Values are at T
A
 = 25°C unless otherwise noted.
Note:
1.
Pul
se test: pw300 s, duty cycle 2%.
Symbol Parameter Value Unit
 V
CBO
 Collector-Base Voltage 100 V
 V
CEO
 Collector-Emitter Voltage 100 V
 V
EBO
 Emitter-Base Voltage 5 V
 I
C
 Collector Current (DC) 8 A
 I
CP
 Collector Current (Pulse) 16  A
 I
B
 Base Current  120 mA
 P
C
 Collector Dissipation (T
C
=25C) 20.00
W
 Collector Dissipation (T
A
=25C) 1.75
 T
J
 Junction Temperature 150 C
 T
STG
 Storage Temperature - 65 to 150 C
Symbol Parameter Conditions Min. Typ. Max. Unit
 V
CEO
(sus)
 Collector-Emitter Sustaining 
 Voltage
(1)
 I
C 
= 30 mA, I
B 
= 0 100 V
 I
CEO
 Collector Cut-Off Current  V
CE 
= 50 V, I
B 
=0 10 A
 I
CBO
 Collector Cut-Off Current  V
CB 
= 100 V, I
E 
= 0 10 A
 I
EBO
 Emitter Cut-Off Current  V
EB 
= 5 V, I
C 
= 0  2 mA
 h
FE
 DC Current Gain
(1)
 V
CE 
= 4 V, I
C 
= 4 A 1000 12000
 V
CE 
= 4 V, I
C 
= 8 A 100
 V
CE
(sat)
 Collector-Emitter Saturation 
 Voltage
(1)
 I
C 
= 4 A, I
B 
= 16 mA 2
V
 I
C 
= 8 A, I
B 
= 80 mA 4
 V
BE
(sat)  Base-Emitter Saturation Voltage
(1)
 I
C 
= 8 A, I
B 
= 80 mA 4.5 V
 V
BE
(on)  Base-Emitter On Voltage
(1)
 V
CE 
= 4 V, I
C 
= 4 A 2.8 V
C
ob
 Output Capacitance  V
CB 
= 10 V, I
E 
= 0, f = 0.1 MHz 200 pF
