1N2822RB

Overview

The 1N2822RB is a single silicon Zener diode manufactured by Microchip Technology, designed for through-hole mounting in TO-204AD (TO-3) packages. It features a nominal Zener voltage of 27 V with a tolerance of ±5%. The device supports a maximum power dissipation of 50 W and operates within an extended temperature range from -65°C to +175°C. Key electrical parameters include a maximum reverse leakage current of 10 µA, a maximum dynamic impedance of 2.8 Ohms, and a maximum forward voltage drop of 1.5 V at the specified test current.

Feature Summary

• High power handling capability suitable for robust voltage regulation applications
• Extended thermal stability across wide industrial and military temperature ranges
• Low dynamic impedance ensuring stable reference performance under varying load conditions

Applications

• High-power voltage regulation circuits
• Precision voltage reference sources
• Overvoltage protection systems

Procurement Notes

Verify manufacturer origin as Microchip Technology or authorized successor entities like Microsemi. Confirm package type is TO-204AD (TO-3). Check datasheet revisions for any parameter updates. Ensure compliance with RoHS directives if required by application specifications. Validate lot traceability for critical deployments.

Selection Notes

Select this component when high power dissipation up to 50 W is required in a standard TO-3 package. The 27 V Zener voltage must match the circuit design requirements. Consider the ±5% tolerance for precision needs. Evaluate thermal management capabilities due to the high power rating. Ensure the operating temperature range meets environmental constraints.

Part Context

This part belongs to the family of single Zener diodes offered by Microchip Technology. It utilizes silicon planar technology for reliable operation. The TO-204AD package provides mechanical robustness and efficient heat dissipation. These diodes are commonly used in industrial and aerospace electronics where reliability is paramount.

Replacement Considerations

Check for direct equivalents from Central Semiconductor Corp. Verify pinout compatibility and thermal resistance values. Ensure replacement parts meet the same 50 W power rating and 27 V Zener voltage specifications. Confirm package dimensions match TO-204AD standards.