PN5137 PBFREE

Single Bipolar Transistors Overview

The PN5137 PBFREE is a silicon NPN general-purpose switching bipolar junction transistor manufactured by Central Semiconductor Corp. It utilizes a TO-92-3 through-hole package and supports a collector-emitter voltage of 20 V and a collector-base voltage of 30 V. The device handles a continuous collector current of up to 500 mA with a power dissipation rating of 1 W. Key electrical characteristics include a minimum DC current gain (hFE) of 20 at 150 mA and a maximum of 400, alongside a transition frequency of 40 MHz. It operates within a temperature range of -65°C to +150°C.

Single Bipolar Transistors Feature Summary

• NPN polarity configuration for single-switching applications
• High thermal stability supporting extended operating temperatures
• Robust current handling capability suitable for general-purpose switching

Single Bipolar Transistors Applications

• General-purpose signal switching circuits
• Low-frequency amplifier stages
• Driver circuits for low-power loads

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm lead times and packaging formats. Confirm RoHS compliance status directly with the supplier or official datasheet before procurement. Ensure the TO-92-3 package dimensions match the target PCB footprint requirements. Validate that the 1 W power dissipation rating aligns with the thermal management design of the final assembly.

Single Bipolar Transistors Selection Notes

Select this component when an NPN transistor with moderate current capacity and high-voltage tolerance is required. The 40 MHz transition frequency makes it suitable for audio and low-speed digital switching rather than high-frequency RF applications. Compare the 1 W power dissipation against alternative packages if higher thermal performance is needed in confined spaces.

Single Bipolar Transistors Part Context

This part belongs to the PN51xx series of discrete bipolar transistors produced by Central Semiconductor Corp. The series typically includes complementary NPN and PNP variants designed for general-purpose electronic applications. These components are widely used in consumer electronics and industrial control systems where reliable switching and amplification are necessary.

Single Bipolar Transistors Replacement Considerations

Check for direct pin-compatible alternatives such as the 2N3904 or BC547 series, ensuring voltage and current ratings meet or exceed the original specifications. Verify that any substitute maintains the same TO-92-3 package style and hFE gain ranges to ensure circuit compatibility.