1N2996B

Overview

The Microchip Technology 1N2996B is a single silicon Zener diode rated for 50 V nominal voltage with a ±5% tolerance. It features a maximum power dissipation of 10 W and utilizes a DO-213AA (DO-4) chassis stud mount package. The device operates within a temperature range of -65 °C to +175 °C. Key electrical characteristics include a test current of 50 mA, a maximum reverse leakage current of 50 µA, and a specified Zener impedance. This component is designed for robust voltage regulation in high-power applications requiring durable mounting.

Feature Summary

• Provides stable voltage regulation at a nominal 50 V level with tight manufacturing tolerances.
• Engineered for high thermal performance with a 10 W power dissipation capability.
• Constructed with a rugged chassis stud mount design for secure mechanical attachment.
• Capable of reliable operation across an extended industrial temperature range.

Applications

• High-power voltage reference circuits
• Overvoltage protection systems
• Industrial power supply regulation

Procurement Notes

Verify the specific manufacturer source, as this part number has been produced by multiple entities including Microsemi and Solid State Inc. Confirm RoHS compliance status, as historical versions may contain lead. Ensure the DO-213AA package dimensions match your chassis requirements. Request official datasheets from the specific supplier to validate electrical parameters before integration.

Selection Notes

Select this component when a 50 V regulation point is required with significant power handling capabilities. The stud mount package necessitates consideration for heatsinking and mechanical isolation. Compare the 10 W rating against actual circuit dissipation needs. Verify that the ±5% tolerance aligns with system precision requirements. Ensure the operating temperature range covers the environmental conditions of the final assembly.

Part Context

The 1N2996B belongs to the standard 1N series of Zener diodes, historically associated with military and industrial specifications. Originally documented by Microsemi Corporation, production rights and manufacturing have shifted among various semiconductor vendors. It represents a legacy high-power discrete component widely used in established designs requiring robust voltage clamping.

Replacement Considerations

Cross-reference with other manufacturers' 1N2996 equivalents such as those from ON Semiconductor or Vishay. Verify pinout compatibility and thermal resistance values. Ensure substitute parts meet the same 10 W power rating and 50 V specification. Check for any changes in package mounting hole patterns if direct replacement is intended.