Fairchild KSP42 43 NPN Epitaxial Silicon Transistor User Manual
Summary
These KSP42/KSP43 NPN Epitaxial Silicon Transistors serve as reliable high-voltage switching components, rated for a maximum power dissipation of 625mW. The detailed manual provides essential engineering data, covering absolute maximum ratings, comprehensive electrical characteristics, saturation voltages, and current gain performance figures. This comprehensive datasheet is designed specifically for electronics designers and engineers building robust, high-power circuits who require precise component specifications and physical dimensions (TO-92 package) for reliable circuit development.
Page 1 Text Content
SP42/43
KSP42/43
High Voltage Transistor Collector-Emitter Voltage: VCEO=KSP42: 300V
KSP43: 200V
Collector Power Dissipation: PC(max)=625m W
TO-921
1. Emitter 2. Base 3. Collector
NPN Epitaxial Silicon Transistor Absolute Maximum Ratings Ta=25°C unless otherwise noted Symbol Parameter Value Units VCBO Collector Base Voltage
: KSP42 : KSP43
VCEO Collector-Emitter Voltage
: KSP42 : KSP43
VEBO Emitter-Base Voltage IC Collector Current m A PC Collector Power Dissipation m W TJ Junction Temperature °C TSTG Storage Temperature -55 ~ 150 °C
Electrical Characteristics Ta=25°C unless otherwise noted Symbol Parameter Test Condition Min. Max. Units BVCBO Collector-Base Breakdown Voltage IC=100µA, IE=0
: KSP42 : KSP43
BVCEO * Collector -Emitter Breakdown Voltage IC=1m A, IB=0
: KSP42 : KSP43
BVEBO Emitter-Base Breakdown Voltage IE=100µA, IC=0 ICBO Collector Cut-off Current
: KSP42 VCB=200V, IE=0 n A : KSP43 VCB=160V, IE=0 n A
IEBO Emitter Cut-off Current
: KSP42 VBE=6V, IC=0 n A : KSP43 VBE=4V, IC=0 n A
h FE * DC Current Gain VCE=10V, IC=1m A
VCE=10V, IC=10m A VCE=10V, IC=30m A
VCE (sat) * Collector-Emitter Saturation Voltage IC=20m A, IB=2m A 0.5 VBE (sat) * Base-Emitter Saturation Voltage IC=20m A, IB=2m A 0.9 Cob Output Capacitance VCB=20V, IE=0
: KSP42 f=1MHz p F : KSP43 p F
f T Current Gain Bandwidth Product VCE=20V, IC=10m A MHz
f=100MHz
* Pulse Test: PW≤300µs, Duty Cycle≤2%
©2002 Fairchild Semiconductor Corporation Rev. A2, September 2002
Page Summary Contents For Fairchild KSP42 43 NPN Epitaxial Silicon Transistor User Manual
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 4 |
| File Size | 36.93 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
Are these transistors suitable for critical life support systems?
No. Fairchild's products are not authorized for use as critical components in life support devices or systems without express written approval.
What does the 'Obsolete' product status mean?
It means the datasheet contains specifications on a discontinued product, and it is meant only for reference information.
What is the maximum collector power dissipation when using this component?
The Collector Power Dissipation (P(max)) is 625 mW in the TO-92 package.
How are changes to these product specifications handled by Fairchild Semiconductor?
Fairchild reserves the right to make changes without further notice to improve reliability, function, or design.