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Product Detailed Parameters
- Description：RF TRANS 15V 4.5GHZ SOT-23
- Series：-
- Mfr：Microsemi Corporation
- Package：Bulk
- Transistor Type：-
- Voltage - Collector Emitter Breakdown (Max)：15V
- Frequency - Transition：4.5GHz
- Noise Figure (dB Typ @ f)：3dB @ 500MHz
- Gain：-
- Power - Max：273mW
- DC Current Gain (hFE) (Min) @ Ic, Vce：40 @ 14mA, 10V
- Current - Collector (Ic) (Max)：25mA
- Operating Temperature：150°C
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23
- Grade：-
- Qualification：-
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Overview
The BFR92ALT1 is a silicon NPN planar RF transistor manufactured by Microsemi Corporation, designed for surface-mount applications in the SOT-23 package. It operates with a maximum collector-emitter breakdown voltage of 15V and a continuous collector current limit of 25mA. The device supports a transition frequency of 4.5GHz and dissipates up to 273mW of power. Key electrical characteristics include a minimum DC current gain (hFE) of 40 at 14mA and 10V, and a typical noise figure of 3dB at 500MHz. It functions within a maximum operating temperature of 150°C.
Feature Summary
- High transition frequency capability suitable for wideband amplifier applications
- Low noise figure performance optimized for sensitive RF signal processing
- Miniature SOT-23 surface-mount package design for compact circuit integration
Applications
- Wide band amplifiers operating in the GHz range
- RF signal processing circuits requiring low noise characteristics
- Compact surface-mount radio frequency systems
Procurement Notes
This component is officially listed as obsolete and discontinued by the manufacturer. Verification of availability should focus on surplus or secondary market sources rather than direct production channels. Confirm the specific lot date code and physical condition when sourcing from non-primary distributors, as standard supply chain guarantees may not apply to end-of-life inventory.
Selection Notes
Select this component for designs requiring an NPN RF transistor with a 4.5GHz transition frequency in a small SOT-23 footprint. Ensure the application voltage remains below the 15V collector-emitter breakdown limit and current stays under 25mA. Verify that the thermal management strategy accommodates the 273mW power dissipation rating and the 150°C maximum junction temperature specification.
Part Context
The BFR92ALT1 belongs to the BFR92 series of silicon NPN planar RF transistors produced by Microsemi. This series is engineered for high-frequency performance in compact packages. The ALT1 suffix typically denotes a specific tape-and-reel packaging configuration for automated assembly, distinguishing it from bulk variants like the BFR92AR.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Microsemi obsolescence notices or engineering change orders for authorized replacement recommendations.
