2SA1347-AC

Overview

The onsemi 2SA1347-AC is a small signal PNP bipolar junction transistor (BJT) featuring integrated pre-biasing. Designed for switching applications, it incorporates built-in bias resistors to simplify circuit design and reduce component count. The device operates with a collector-emitter voltage of 50 V and supports a maximum power dissipation of 200 mW. It utilizes the compact SPA (Small Package Assembly) through-hole package, which offers a three-terminal configuration suitable for space-constrained designs. This component provides reliable performance in low-power electronic circuits requiring efficient signal switching.

Feature Summary

• Integrates built-in bias resistors to streamline circuit architecture
• Utilizes compact SPA through-hole packaging for space efficiency
• Engineered specifically for high-speed switching applications

Applications

• General purpose switching circuits
• Low-power signal processing systems
• Consumer electronics control logic

Procurement Notes

Verify the specific suffix and manufacturer origin during procurement, as the 2SA1347 series has been produced by multiple semiconductor manufacturers including Sanyo Semicon Device and onsemi. Ensure the datasheet matches the required electrical characteristics and pinout configuration for your specific application design. Confirm that the 3-SSIP package type aligns with your PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when a single PNP transistor with integrated base biasing is required to minimize external passive components. The 50 V rating and 200 mW power dissipation make it suitable for low-voltage digital logic interfaces. Consider the SPA package dimensions if board real estate is limited. Verify that the internal resistor values meet the drive requirements of the controlling logic source.

Part Context

This part belongs to the family of pre-biased transistors designed to replace discrete resistor-transistor combinations. These devices are commonly used in digital circuits where space savings and assembly simplicity are prioritized. The 2SA1347 variant specifically addresses PNP switching needs in consumer and industrial electronics, offering a standardized solution for basic logic level translation and switching tasks.

Replacement Considerations

Check for direct substitutes from other manufacturers such as Sanyo Semicon Device equivalents. Verify pin compatibility and internal resistor tolerances when cross-referencing alternative sources. Ensure any replacement maintains the same 3-SSIP package form factor to fit existing footprints without redesign.