2N5345

Overview

The 2N5345 is a high-power NPN silicon transistor manufactured by Microchip Technology. It is qualified to MIL-PRF-19500/456 standards and designed for robust performance in demanding environments. The device features a collector-emitter voltage of 60V, a collector-base voltage of 60V, and an emitter-base voltage of 5.0V. It supports a continuous collector current of 1A and dissipates up to 1W of power. The component utilizes a TO-39-3 metal can package with through-hole mounting, ensuring reliable thermal management and mechanical stability for industrial applications.

Feature Summary

• Qualified to MIL-PRF-19500/456 military specifications for reliability
• High-power NPN silicon construction for robust operation
• Metal can TO-39-3 package providing superior thermal dissipation

Applications

• Military-grade switching circuits
• Industrial power control systems
• High-reliability amplifier stages

Procurement Notes

Verify the specific qualification level (e.g., JANTX) required for your application against the manufacturer's datasheet. Confirm that the TO-39-3 package dimensions match your PCB layout constraints. Ensure that the thermal management design accommodates the 1W power dissipation rating under maximum operating conditions. Check for any recent product change notifications regarding material or process updates.

Selection Notes

Select this component when military-grade reliability and high-power handling are required in a through-hole configuration. The 60V voltage rating suits low-to-medium voltage switching applications. Consider the TO-39-3 package size if board space allows for larger components. Evaluate thermal requirements carefully, as the 1W dissipation limit may necessitate heatsinking in dense assemblies.

Part Context

The 2N5345 belongs to Microchip's portfolio of qualified discrete semiconductors. It serves as a rugged alternative to commercial transistors in aerospace and defense sectors. The part complements other NPN devices in the series, offering standardized pinouts and electrical characteristics for easy integration into existing military designs.

Replacement Considerations

Direct substitutes must meet MIL-PRF-19500/456 specifications. Verify equivalent voltage, current, and power ratings before substitution. Cross-reference with other manufacturers' military-grade NPN transistors in TO-39 packages only if they explicitly state compliance with the same military standard.