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Product Detailed Parameters
- Description：RF TRANS NPN 20V 600MHZ TO-92S
- Series：-
- Mfr：onsemi
- Package：Tape & Box (TB)
- Transistor Type：NPN
- Voltage - Collector Emitter Breakdown (Max)：20V
- Frequency - Transition：600MHz
- Noise Figure (dB Typ @ f)：3dB ~ 5dB @ 100MHz
- Gain：18dB ~ 22dB
- Power - Max：250mW
- DC Current Gain (hFE) (Min) @ Ic, Vce：70 @ 1mA, 6V
- Current - Collector (Ic) (Max)：20mA
- Operating Temperature：150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 Short Body
- Supplier Device Package：TO-92S
- Grade：-
- Qualification：-
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Overview
The KSC2786OTA is an NPN epitaxial silicon transistor manufactured by onsemi, housed in a TO-92S package. It features a collector-base voltage of 30 V, a collector-emitter voltage of 20 V, and a maximum collector current of 20 mA. The device dissipates up to 250 mW with a junction temperature limit of 150 °C. Electrical characteristics include a DC current gain (hFE) ranging from 40 to 240 at 1 mA, a typical current gain bandwidth product (fT) of 600 MHz, and a power gain of 22 dB at 100 MHz. Noise figure specifications range between 3.0 and 5.0 dB.
Feature Summary
- Designed for TV PIF amplifier, FM tuner RF amplifier, mixer, and oscillator applications
- Provides high current gain bandwidth product for efficient signal processing
- Delivers high power gain suitable for radio frequency stages
Applications
- TV PIF Amplifier
- FM Tuner RF Amplifier
- Mixer
- Oscillator
Procurement Notes
Verify the component status carefully as datasheets indicate it may be obsolete or discontinued by Fairchild Semiconductor. Confirm availability through authorized distributors and check for updated part numbers if sourcing from onsemi channels. Ensure the specific OTA suffix matches the required packaging configuration before finalizing orders.
Selection Notes
Select this component when designing circuits requiring an NPN transistor with a 20 V collector-emitter rating and low noise performance. The high fT makes it appropriate for frequencies around 100 MHz. Verify that the 20 mA collector current limit meets the load requirements and that the TO-92S package fits the thermal and spatial constraints of the target PCB layout.
Part Context
This component belongs to the KSC2786 series of NPN epitaxial silicon transistors originally developed by Fairchild Semiconductor. The series is engineered specifically for radio frequency applications in consumer electronics. The KSC2786OTA variant utilizes the TO-92S short-body package, distinguishing it from standard TO-92 configurations while maintaining identical electrical parameters.
Replacement Considerations
Check for direct equivalents within the KSC2786 family. Verify pinout compatibility for Emitter, Collector, and Base arrangements. Ensure replacement parts match the 20 V VCEO and 20 mA IC limits to maintain circuit integrity.
FAQ
What is the typical current gain bandwidth product (fT) for the KSC2786?
The typical current gain bandwidth product is 600 MHz.
What are the absolute maximum ratings for collector-base and collector-emitter voltages?
The absolute maximum collector-base voltage is 30 V, and the collector-emitter voltage is 20 V.
Does the KSC2786 support operation at 100 MHz?
Yes, it is specified for use at 100 MHz with a typical power gain of 22 dB and a noise figure between 3.0 and 5.0 dB.
