2SA1257-5-TB-E

Single Bipolar Transistors Overview

The onsemi 2SA1257-5-TB-E is a single PNP bipolar junction transistor (BJT) designed for surface-mount applications. It features a collector-emitter voltage rating of 160 V and a continuous collector current capability of 80 mA. The device operates with a transition frequency of 150 MHz and supports a maximum power dissipation of 200 mW. Packaged in a compact 3-CP outline, this component serves as a small-signal switching or amplification element within electronic circuits requiring reliable PNP transistor performance.

Single Bipolar Transistors Feature Summary

• PNP polarity configuration for signal processing
• Surface-mount construction for automated assembly
• High-voltage blocking capability up to 160 V

Single Bipolar Transistors Applications

• Small-signal amplification stages
• General-purpose switching circuits
• Consumer electronics control logic

Single Bipolar Transistors Procurement Notes

Verify the specific suffix -5-TB-E against the official onsemi datasheet to confirm tape-and-reel packaging and orientation. Ensure the procurement documentation explicitly references the 3-CP package type and RoHS compliance status. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing orders.

Single Bipolar Transistors Selection Notes

Select this component when a PNP BJT with 160 V breakdown and 80 mA current capacity is required in a low-power surface-mount form factor. Consider the 150 MHz transition frequency for moderate-speed switching applications. Evaluate thermal management requirements given the 200 mW dissipation limit in the 3-CP package during design integration.

Single Bipolar Transistors Part Context

This transistor belongs to onsemi's discrete semiconductor portfolio, specifically within the bipolar junction transistor category. It complements the company's broader range of small-signal devices used in industrial and consumer applications. The 2SA1257 series provides standardized performance characteristics for designers integrating PNP switching elements into compact PCB layouts.

Single Bipolar Transistors Replacement Considerations

Consult official cross-reference guides for equivalent PNP transistors with matching 160 V, 80 mA, and 3-CP specifications. Verify pinout compatibility and thermal characteristics before substituting with alternative manufacturers' components.