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Product Detailed Parameters
- Description：RF TRANS NPN 15V 1.4GHZ TO-72
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Bulk
- Transistor Type：NPN
- Voltage - Collector Emitter Breakdown (Max)：15V
- Frequency - Transition：1.4GHz
- Noise Figure (dB Typ @ f)：5.5dB @ 800MHz
- Gain：23dB
- Power - Max：200mW
- DC Current Gain (hFE) (Min) @ Ic, Vce：20 @ 25mA, 1V
- Current - Collector (Ic) (Max)：25mA
- Operating Temperature：-65°C ~ 200°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-206AF, TO-72-4 Metal Can
- Supplier Device Package：TO-72
- Grade：-
- Qualification：-
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Overview
The BFY90 PBFREE is a silicon NPN RF transistor manufactured by Central Semiconductor Corp. It operates with a transition frequency of 1.4GHz and provides a gain of 23dB. The device supports a maximum collector current of 25mA and a voltage rating of 15V. Power dissipation is rated at 200mW. It utilizes a TO-72 through-hole package, which is hermetically sealed to ensure reliability in VHF/UHF environments.
Feature Summary
- Designed for VHF and UHF amplifier, oscillator, and converter applications
- Constructed as a silicon NPN epitaxial planar transistor
- Mounted in a hermetically sealed TO-72 through-hole package
Applications
- VHF amplifier circuits
- UHF oscillator designs
- Signal converter stages
Procurement Notes
Verify the 'PBFREE' suffix confirms lead-free plating compliance per manufacturer standards. Confirm the TO-72 package dimensions match the target PCB footprint. Ensure the 1.4GHz transition frequency meets the specific circuit requirements. Check that the 200mW power dissipation rating is sufficient for the thermal environment. Validate the 15V voltage rating against the operating conditions.
Selection Notes
Select this component for discrete RF designs requiring high-frequency performance in a robust through-hole format. The hermetically sealed package offers environmental protection suitable for demanding applications. Consider the 23dB gain when designing amplifier stages. The NPN configuration dictates the biasing network design. Verify compatibility with existing VHF/UHF system architectures before integration.
Part Context
This part belongs to the Central Semiconductor BFX89/BFY90 family of silicon NPN RF transistors. These devices are engineered specifically for radio frequency applications. The family shares similar electrical characteristics and physical packaging. They are intended for use in professional communication and broadcast equipment. The manufacturer focuses on discrete semiconductors for niche industrial needs.
Replacement Considerations
The BFX89 is a documented substitute within the same product family from Central Semiconductor. Both parts share identical mounting types and general application scopes. Verify specific parameter tolerances between the original and replacement units. Ensure the substitute maintains the required hermetic seal integrity. Cross-reference datasheets for any minor differences in gain or frequency response.
