2SA1345-AC

Overview

The onsemi 2SA1345-AC is a PNP silicon epitaxial planar transistor designed for general-purpose switching and amplification applications. It features a maximum collector current of -0.5 A and a collector-emitter voltage rating of -80 V. The device operates within a junction temperature range of -55°C to +150°C and offers a DC current gain (hFE) ranging from 70 to 350 at IC = -10 mA. Packaged in the SOT-89 surface-mount format, it provides reliable performance for low-power circuit designs requiring robust PNP switching capabilities.

Feature Summary

• High breakdown voltage capability suitable for medium-voltage switching applications
• Wide operating temperature range ensuring stability in diverse thermal environments
• Surface-mount SOT-89 package optimized for automated assembly and space-constrained PCB layouts

Applications

• General-purpose switching circuits
• Amplifier stages in audio or signal processing equipment
• Driver circuits for relays or small loads

Procurement Notes

Verify the specific suffix AC against the official datasheet to confirm pinout configuration and electrical tolerances. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm that the SOT-89 package dimensions match your PCB footprint design constraints prior to procurement.

Selection Notes

Select this component when a PNP transistor with -80V VCEO and -0.5A continuous current is required in a compact SOT-89 package. Consider the hFE range of 70-350 for biasing calculations in amplifier designs. Evaluate thermal dissipation needs based on the 2W power dissipation limit at 25°C ambient temperature. Compare against alternative PNP devices if higher current or different packaging is needed.

Part Context

The 2SA1345 series belongs to onsemi's portfolio of general-purpose bipolar junction transistors. These devices are engineered for cost-effective solutions in consumer electronics and industrial control systems. The 2SA1345-AC variant specifically denotes the PNP version with defined gain binning and packaging specifications consistent with industry-standard SOT-89 mounting requirements.

Replacement Considerations

Direct substitutes include other PNP transistors in SOT-89 packages with similar VCEO and IC ratings, such as the 2SA1015 in alternative packaging or equivalent parts from other manufacturers like Toshiba or Rohm. Verify pin compatibility and thermal characteristics before substitution.