1N937-1

Single Zener Diodes Overview

The Microchip Technology 1N937-1 is a silicon voltage reference diode housed in a hermetically sealed glass DO-7 (DO-204AA) axial leaded package. It provides a nominal Zener voltage of 9 V with a tight tolerance of 5%. Designed for minimal voltage change with temperature, it features a low temperature coefficient of 0.002%/°C when operated at a test current of 7.5 mA. The device has a power dissipation rating of 500 mW and an impedance of 20 Ohms.

Single Zener Diodes Feature Summary

• Temperature compensated design ensures stable voltage output across varying thermal conditions
• Hermetically sealed glass construction provides environmental protection and reliability
• Low temperature coefficient minimizes voltage drift during operation

Single Zener Diodes Applications

• Precision voltage reference circuits requiring high stability
• Temperature compensated Zener regulator designs
• Military and aerospace electronic systems demanding hermetic sealing

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements for your application. The base part number may differ from RoHS-compliant or military-grade variants. Confirm package dimensions and lead specifications against your PCB layout. Ensure the supplier provides valid traceability documentation for hermetically sealed components. Check for any specific handling instructions related to glass axial leads.

Single Zener Diodes Selection Notes

Select this component when a stable 9 V reference is required with strict temperature stability. The 5% tolerance suits applications needing moderate precision without complex trimming. Consider the 500 mW power rating for thermal management in enclosed spaces. Verify that the through-hole DO-7 package fits the assembly constraints. Compare the 0.002%/°C coefficient against alternative references if higher stability is needed.

Single Zener Diodes Part Context

This device belongs to the popular 1N935 through 1N940B series of Zero-TC Reference Diodes produced by Microchip Technology. These diodes are engineered to provide nominal voltages around 9 V with exceptionally low temperature coefficients. The series is widely used in applications where voltage stability is critical over a wide temperature range.

Single Zener Diodes Replacement Considerations

Compatible substitutes within the same family include 1N936 and 1N938. Ensure replacement parts match the 9 V nominal voltage and DO-7 package style. Verify that the temperature coefficient and tolerance meet the original circuit requirements.