2N656

Single Bipolar Transistors Overview

The Microchip Technology 2N656 is a silicon NPN planar power bipolar junction transistor (BJT) designed for medium-power, fast-switching applications. It features a maximum collector-emitter voltage of 60V and a continuous collector current rating of 0.5A. The device dissipates up to 4W of power within a TO-5 metal can package. Key electrical characteristics include a DC current gain (hFE) range typically spanning 10 to 100 at specified test conditions. The component operates with a maximum junction temperature of 175°C and is rated for storage temperatures between -65°C and +175°C.

Single Bipolar Transistors Feature Summary

• Utilizes silicon planar technology for robust construction and reliable performance in high-reliability environments.
• Engineered for fast switching capabilities suitable for servo amplifier and general-purpose switching circuits.
• Provides medium-power handling capacity with a 4W dissipation rating in a hermetically sealed metal package.

Single Bipolar Transistors Applications

• Servo amplifier output stages
• General-purpose switching circuits
• Medium-power linear regulation

Single Bipolar Transistors Procurement Notes

Verify the manufacturer source carefully, as the 2N656 designation has been utilized by multiple vendors including Motorola and New Jersey Semi-Conductor. Confirm that the specific lot matches Microchip Technology specifications regarding pinout and thermal resistance. Request detailed datasheets from authorized distributors to ensure compliance with military or industrial grade requirements if applicable.

Single Bipolar Transistors Selection Notes

Select this component when a hermetically sealed NPN power transistor is required for high-temperature operation up to 175°C. Ensure the application demands a 60V breakdown voltage and 0.5A current capability. Consider the TO-5 package constraints for mounting and thermal management compared to modern surface-mount alternatives.

Single Bipolar Transistors Part Context

The 2N656 belongs to the family of silicon NPN annular transistors historically used in aerospace and defense electronics. While originally associated with Raytheon and Motorola designs, Microchip Technology continues to supply variants adhering to the standard 2N656 specifications. These devices serve as legacy replacements for older analog control systems requiring rugged discrete power components.

Single Bipolar Transistors Replacement Considerations

Cross-reference with equivalent part numbers such as the 2N657 for complementary PNP configurations or similar TO-5 NPN power transistors from other manufacturers. Verify that substitute components meet identical voltage, current, and thermal ratings to maintain circuit integrity.