1N2970RB

Overview

The Microchip Technology 1N2970RB is a single silicon Zener diode with a nominal regulation voltage of 6.8 V and a maximum power dissipation of 10 W. It utilizes the DO-213AA (DO-4) metal case package, featuring internal solder bond construction and hermetic sealing. The device operates within a temperature range of -65 °C to +175 °C and maintains a standard voltage tolerance of ±5%.

Feature Summary

• Hermetically sealed welded metal case construction for high reliability
• Internal solder bond design ensuring robust mechanical integrity
• Capable of operating in extreme thermal environments up to 175 °C

Applications

• Military and defense systems requiring high-reliability discrete components
• Aerospace voltage regulation circuits
• High-reliability industrial applications demanding stable reference voltages

Procurement Notes

Verify the specific manufacturer source, as this component has been produced by multiple entities including Microchip and New Jersey Semiconductor. Confirm that the DO-213AA package dimensions and pinout match your chassis requirements. Ensure the reverse polarity suffix 'RB' is correctly interpreted as cathode connection if applicable to your schematic design before finalizing orders.

Selection Notes

Select this component when a hermetically sealed, stud-mount Zener diode is required for high-power dissipation scenarios. The 10 W rating supports significant current handling compared to smaller packages. Consider the DO-213AA form factor for direct chassis mounting or heat sink integration in ruggedized electronic assemblies where environmental sealing is critical.

Part Context

This part belongs to the 1N2970 series of 10 W Zener diodes, which covers a wide voltage range from 6.8 V to 200 V. The 'RB' suffix typically denotes a specific lead configuration or polarity variant within the series. These diodes are engineered for military-grade performance, offering superior stability and longevity compared to standard commercial equivalents.

Replacement Considerations

Direct substitutes include other manufacturers' versions of the 1N2970B series in the DO-4 package. Verify that any replacement maintains the same hermetic seal and 10 W power rating. Cross-reference datasheets to ensure identical voltage tolerance and thermal characteristics are met.