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Product Detailed Parameters
- Description：RF TRANS NPN 30V 700MHZ TO-92-3
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Bulk
- Transistor Type：NPN
- Voltage - Collector Emitter Breakdown (Max)：30V
- Frequency - Transition：700MHz
- Noise Figure (dB Typ @ f)：2dB ~ 3dB @ 200MHz
- Gain：20dB ~ 24dB
- Power - Max：250mW
- DC Current Gain (hFE) (Min) @ Ic, Vce：90 @ 2mA, 10V
- Current - Collector (Ic) (Max)：20mA
- Operating Temperature：150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The KSC1393YBU is a silicon NPN RF small signal bipolar transistor manufactured by Fairchild Semiconductor. Designed for the Very High Frequency (VHF) band, this single-element device features a maximum collector current of 0.02 A and a collector-emitter voltage rating of 30 V. It exhibits a low collector capacitance of 0.5 pF, supporting high-frequency operation. The component utilizes a cylindrical plastic/epoxy through-hole package with three terminals, specifically identified as TO-92 or lead-free package-3 configuration.
Feature Summary
- Optimized for very high frequency band applications
- Low noise performance characteristics
- Lead-free compliant construction
Applications
- VHF radio frequency amplification circuits
- RF signal processing stages
- High-frequency switching applications
Procurement Notes
Verify manufacturer authenticity when sourcing from third-party distributors, as Rochester Electronics also lists this part number. Confirm the specific package variant matches design requirements, noting potential distinctions between standard and lead-free versions. Ensure the component meets RoHS compliance standards if required by the target assembly process.
Selection Notes
Select this component for designs requiring low-noise VHF amplification with modest current handling capabilities. The 30 V collector-emitter voltage provides adequate headroom for many low-power RF stages. Consider the through-hole TO-92 package constraints regarding PCB layout and thermal management compared to surface-mount alternatives.
Part Context
This transistor belongs to the Fairchild semiconductor discrete bipolar transistor family. It shares functional similarities with other VHF NPN transistors but is distinct in its specific low-noise and low-capacitance profile. The part is often associated with Rochester Electronics listings, indicating availability through authorized secondary market channels alongside original manufacturer distribution.
Replacement Considerations
Direct substitutes include the KSC1393RJ18Z, which shares identical electrical specifications including the 0.02 A current and 30 V voltage ratings. Verify package compatibility when swapping between different suffix variants to ensure mechanical fit within the existing circuit board footprint.
