1N2996A

Overview

The Microchip Technology 1N2996A is a silicon Zener diode designed for voltage regulation and overvoltage protection. It features a nominal Zener voltage of 50 V with a tolerance of ±5%. The device has a power dissipation rating of 10 W and operates within a temperature range of -65 °C to +175 °C. It utilizes a DO-213AA (DO-4) package with stud mount configuration, ensuring robust mechanical stability for high-power applications.

Feature Summary

• High power dissipation capability of 10 W for effective thermal management in demanding circuits
• Stud mount construction in a hermetically sealed metal-glass package for reliable chassis integration
• Wide operating temperature range extending from -65 °C to +175 °C for harsh environment suitability

Applications

• Voltage regulation in high-power electronic systems
• Overvoltage protection circuits requiring robust clamping
• Chassis-mounted power supply reference designs

Procurement Notes

Verify the specific manufacturer source, as the 1N2996A designation was historically associated with multiple vendors including Motorola and General Instrument before being acquired by Microchip. Confirm the package style matches the required DO-213AA/DO-4 form factor. Ensure the datasheet specifies the exact tolerance grade required for the application, as historical variants may differ slightly in electrical characteristics.

Selection Notes

Select this component when a high-power, chassis-mountable Zener diode is required for stable voltage reference or protection. The 10 W rating allows for significant current handling compared to standard axial packages. Consider the thermal resistance of the mounting surface, as the stud mount design relies on direct contact with a heatsink or chassis for optimal performance under full load conditions.

Part Context

The 1N2996A belongs to the legacy 1N series of Zener diodes, originally standardized for rugged industrial and military applications. Microchip Technology now holds the rights to these part numbers following acquisitions. This specific model represents a high-power variant distinct from lower-wattage axial equivalents, emphasizing mechanical durability and thermal capacity through its unique stud mount packaging.

Replacement Considerations

Direct substitutes include other 50V 10W Zener diodes in DO-213AA packages from manufacturers such as Vishay or Littelfuse. Verify that any replacement maintains the same stud mount configuration and hermetic sealing requirements if used in aerospace or harsh environments.