1N3156-1/TR

Overview

The Microchip Technology 1N3156-1/TR is a temperature-compensated Zener diode designed for precision voltage regulation. It features an 8.4V nominal Zener voltage with a tight tolerance of 1%. The device operates at a test current of 10mA and dissipates up to 500mW. It utilizes a DO-204AA (DO-7) glass axial package, suitable for through-hole mounting. Key electrical characteristics include a maximum reverse leakage current of 10µA and a Zener impedance of 15Ω.

Feature Summary

• Temperature compensated design ensures stable voltage regulation across varying thermal conditions
• High precision voltage tolerance for accurate reference applications
• Hermetically sealed glass construction for environmental durability

Applications

• Precision voltage reference circuits
• Temperature compensated regulator designs
• Sensitive analog signal conditioning

Procurement Notes

Verify the specific suffix configuration against official Microchip documentation to ensure compatibility with required tolerance and packaging specifications. Confirm RoHS compliance status as historical variants may differ. Validate that the DO-7 package dimensions match the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when high stability over temperature is critical. The 1% tolerance distinguishes it from standard general-purpose Zener diodes. Ensure the circuit design accommodates the 10mA test current requirement to maintain specified accuracy. Consider the 500mW power dissipation limit in relation to ambient operating temperatures.

Part Context

This part belongs to the military-grade and high-reliability Zener diode family produced by Microchip Technology. It shares the base 1N3156 designation but differs in packaging and tolerance specifications compared to commercial equivalents. The product line emphasizes reliability for aerospace and defense electronics.

Replacement Considerations

Direct substitutes include other temperature-compensated Zener diodes with identical 8.4V ratings and 1% tolerance. Verify pinout compatibility and package dimensions when considering alternatives from other manufacturers.