2N6318

Overview

The Microchip Technology 2N6318 is a PNP silicon power transistor housed in a hermetically sealed TO-66 (TO-213AA) flange mount package. It features a maximum collector current of 7 A and a collector-emitter voltage rating of 80 V. The device supports a total power dissipation of 90 W with a junction-to-lead thermal resistance suitable for high-power applications. Operating temperatures range from -65 °C to +200 °C, ensuring reliability in extreme environments.

Feature Summary

• Hermetically sealed construction for environmental protection
• Mechanically rugged design suitable for harsh conditions
• Complimentary pairing available with NPN 2N6315 and 2N6316 devices

Applications

• Untuned amplifier circuits
• General purpose power switching
• Military and industrial systems requiring high reliability

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm RoHS compliance status, as standard versions may differ from compliant alternatives. Confirm that the TO-66 package dimensions match the target PCB or chassis mounting requirements. Ensure the supplier provides traceability documentation consistent with military or industrial grade specifications if required by the system design.

Selection Notes

Select this component when high power handling and ruggedness are prioritized over surface mount convenience. The complementary nature with NPN counterparts facilitates push-pull output stage designs. Evaluate the thermal management strategy carefully due to the 90 W dissipation rating and the requirement for direct heat sinking through the metal flange.

Part Context

This device belongs to the Microsemi/Microchip family of discrete bipolar power transistors designed for high-reliability applications. It serves as the PNP counterpart to the NPN 2N6315/2N6316 series, enabling matched performance in complementary configurations. The TO-66 package is a legacy standard widely used in aerospace and defense electronics where proven mechanical stability is critical.

Replacement Considerations

Direct substitutes include the NPN-complementary 2N6317. Verify pinout compatibility and thermal characteristics before substituting with other TO-66 PNP transistors.