BC639,112

Single Bipolar Transistors Overview

The BC639,112 is a PNP silicon epitaxial planar transistor manufactured by NXP USA Inc. It is housed in a TO-92 plastic package and features a maximum collector current of 1 A and a collector-emitter voltage rating of 80 V. The device is RoHS compliant and lead-free, with an operating temperature range extending up to 150 °C.

Single Bipolar Transistors Feature Summary

• PNP configuration for switching and amplification applications
• High collector current capability of 1 A
• Robust voltage handling with 80 V collector-emitter rating
• Standard TO-92 cylindrical plastic packaging

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Amplifier stages
• Driver circuits for loads requiring moderate current

Single Bipolar Transistors Procurement Notes

Verify the specific ordering code BC639,112 against official NXP documentation to confirm the presence of the 112 tape-and-reel suffix. Ensure compliance requirements match project specifications, as this variant is lead-free and RoHS compliant. Cross-reference datasheet parameters for thermal resistance and gain bands before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with 80 V breakdown and 1 A continuous current capacity is required. The TO-92 package suits through-hole mounting on standard PCBs. Verify that the hFE gain band meets the circuit's amplification needs, as values vary across production batches.

Single Bipolar Transistors Part Context

This part belongs to the BC63x series of general-purpose NPN/PNP transistors from NXP. These devices are widely used in consumer electronics and industrial equipment due to their reliability and standardized pinout. The BC639 specifically serves as the complementary PNP counterpart to the BC640 NPN transistor.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include the BC640 (NPN equivalent), BC847 series (lower current), or generic 2N3906 (similar PNP characteristics). Verify pinout compatibility and thermal limits before substitution.