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Product Detailed Parameters
- Description：RF TRANS NPN 40V 1.1GHZ TO-92-3
- Series：-
- Mfr：onsemi
- Package：Bulk
- Transistor Type：NPN
- Voltage - Collector Emitter Breakdown (Max)：40V
- Frequency - Transition：1.1GHz
- Noise Figure (dB Typ @ f)：-
- Gain：-
- Power - Max：350mW
- DC Current Gain (hFE) (Min) @ Ic, Vce：65 @ 1mA, 10V
- Current - Collector (Ic) (Max)：50mA
- Operating Temperature：-
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The BF240_J35Z is an NPN medium frequency transistor manufactured by onsemi. It is housed in a TO-92 plastic package, specifically the SOT54 form factor. The device is designed for applications requiring low current and low voltage operation, with maximum ratings of 25 mA collector current and 40 V collector-emitter voltage. It serves as a silicon planar epitaxial transistor suitable for RF and audio frequency circuits.
Feature Summary
- Low current capability optimized for small signal applications
- Low voltage rating suitable for sensitive circuit protection
- NPN medium frequency operation in a compact TO-92 package
Applications
- AM mixer circuits
- IF amplifiers in AM/FM receivers
- General purpose medium frequency switching
Procurement Notes
Verify the specific suffix J35Z against official onsemi documentation to confirm tape and reel or bulk packaging details. Ensure the component matches the SOT54/TO-92 physical dimensions. Confirm RoHS compliance status through the manufacturer's latest datasheet revision before integration into production designs.
Selection Notes
Select this component for low-power NPN switching or amplification tasks within the 40V limit. Compare electrical characteristics such as hFE and transition frequency against alternative NPN transistors from other manufacturers if supply constraints exist. Ensure the thermal dissipation requirements align with the TO-92 package capabilities.
Part Context
This part belongs to the BF240 series of NPN medium frequency transistors. It shares functional similarities with other devices in the BF199 and BFS20 families, which are also designed for similar low-voltage, low-current applications in communication equipment and signal processing stages.
Replacement Considerations
Direct substitutes include the BF240A, BF240B, and BF240C variants from various manufacturers. Cross-reference with BFS20 or BF199 models for equivalent performance in medium frequency applications. Verify pinout compatibility when replacing with parts from different suppliers.
