1N2842RB

Overview

The Microchip Technology 1N2842RB is a silicon unidirectional Zener diode designed for voltage regulation and overvoltage protection. It features a nominal Zener voltage of 130V with a maximum power dissipation of 50W. The device utilizes a TO-204AD (TO-3) metal flange mount package, which is hermetically sealed. Key electrical characteristics include a maximum Zener impedance of 50 Ohms and a tolerance of ±5%. The component is classified as a single-element diode suitable for industrial circuit applications requiring robust power handling capabilities.

Feature Summary

• Hermetically sealed metal flange mount construction for environmental durability
• High power dissipation capability of 50W for robust thermal performance
• Designed specifically for voltage regulation and overvoltage protection functions

Applications

• Industrial circuit voltage regulation
• Overvoltage protection systems
• Power supply stabilization circuits

Procurement Notes

Verify the specific tolerance grade required, as datasheets indicate both ±1% and ±5% variants exist within the 1N2842 family. Confirm lead-free status if RoHS compliance is mandatory, noting that some historical or military-grade versions may contain lead. Ensure the TO-204AD package dimensions match the target PCB or chassis mounting requirements before finalizing procurement.

Selection Notes

Select this component when high-power Zener regulation is required in a ruggedized environment. The TO-3 package offers superior heat dissipation compared to standard plastic packages. Consider the ±5% tolerance variant for general applications unless tighter precision is specified by the design schematic. Verify that the 130V breakdown voltage aligns with the system's protection thresholds.

Part Context

This part belongs to the 1N284x series of high-power Zener diodes manufactured by Microchip Technology (formerly Microsemi). These components are widely used in demanding industrial and aerospace environments where reliability and thermal stability are critical. The series includes various voltage ratings and tolerance grades, all sharing the same durable hermetic metal package structure.

Replacement Considerations

Direct substitutes include the JANTXV1N2842D from Microsemi, which shares the same electrical specifications and package type. Other compatible parts in the 1N284x series may be considered if voltage and power ratings match the application requirements.