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Fairchild KSC1845 NPN Epitaxial Silicon Transistor Data Handbook

Summary

This manual details the KSC1845 audio frequency low-noise amplifier NPN transistor, a TO-92 component designed for high-performance audio applications. It serves as a technical reference for electronics engineers and hobbyists looking to integrate this complementary device into their circuit designs.

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KSC1845

Audio Frequency Low Noise Amplifier Complement to KSA992

TO-921

1. Emitter 2. Collector 3. Base

NPN Epitaxial Silicon Transistor Absolute Maximum Ratings Ta=25°C unless otherwise noted Symbol Parameter Value Units VCBO Collector-Base Voltage

VCEO Collector-Emitter Voltage VEBO Emitter-Base Voltage IC Collector Current m A IB Base 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. Typ. Max. Units ICBO Collector Cut-off Current VCB=120V, IE=0 n A IEBO Emitter Cut-off Current VEB=5V, IC=0 n A

h FE1 DC Current Gain VCE=6V, IC=0.1m A

h FE2 VCE=6V, IC=1m A

VBE (on) Base-Emitter On Voltage VCE=6V, IC=1m A 0.55 0.59 0.65 VBE (sat) Collector-Emitter Saturation Voltage IC=10m A, IB=1m A 0.07 0.3 f T Current Gain Bandwidth Product VCE=6V, IC=1m A MHz Cob Output Capacitance VCB=30V, IE=0, f=1MHz 1.6 2.5 p F

NL Noise Level m V

h FE Classification Classification P

h FE2 200 ~ 400 300 ~ 600 400 ~ 800 600 ~ 1200

©2002 Fairchild Semiconductor Corporation Rev. B2, November 2002

Page Summary Contents For Fairchild KSC1845 NPN Epitaxial Silicon Transistor Data Handbook

Page 1 KSC1845 Audio Frequency Low Noise Amplifier Complement to KSA992 TO-921 1. Emitter 2. Collector 3. Base NPN Epitaxial Silicon Transistor Absolute Maximum Ratings Ta=25°C unless otherwise noted Symbol ...
Page 2 SC Typical Characteristics [p F] , C AP AC IT AN E, EN AI ob [m A] , C LL EC TO UR EN IB=16µA IB=1.4µA IB=1.2µA IB=14µA IB=1.0µA IB=12µA IB=0.8µA IB=10µA 0.6 IB=0.6µA IB=8µA IB=0.4µA IB=6µA 0.4 IB=4µA...
Page 3 SC Typical Characteristics (Continued) C[ A] , C LL EC TO EN VCE = 6V Pulse Test o C], CASE TEMPERATURE VBE[V], BASE-EMITTER VOLTAGE Ta[ Figure 7. Collector Current vs. Base-Emitter Voltage Figure 8. ...
Page 4 SC Package Dimensions TO-92 3. 1. 0. +0 .1 1.27TYP 1.27TYP 0.38 Dimensions in Millimeters ©2002 Fairchild Semiconductor Corporation Rev. B2, November 2002
Page 5 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™ FACT...

Manual Details

Brand Fairchild
Pages 5
File Size 49.54 KB
Published June 15, 2026
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Frequently Asked Questions

What is the pin configuration of the KSC1845?

Pin 1 is Emitter, pin 2 is Collector, pin 3 is Base.

What is the maximum collector-emitter voltage?

VCEO is 120V.

What is the complementary transistor to the KSC1845?

The KSA992.

What are the DC current gain classifications?

hFE2 classifications: P 200-400, F 300-600, E 400-800, U 600-1200.

What is the noise level specification?

NL (Noise Level) is 25 to 40 mV.