1N3157A/TR

Single Zener Diodes Overview

The Microchip Technology 1N3157A/TR is an 8.4 V temperature compensated Zener reference diode in a DO-7 (DO-204AA) glass axial package. It operates at a test current of 10 mA with a maximum impedance of 15 Ohms and reverse current of 10 µA at 5.5 V. The device provides a maximum temperature coefficient of 0.001 %/°C over a -55°C to +150°C range. It dissipates 500 mW, supports soldering at 260°C for 10 seconds, and features internal metallurgical bonds.

Single Zener Diodes Feature Summary

• Provides minimal voltage changes over a broad temperature range
• Features internal metallurgical bonds for structural integrity
• Flexible axial-lead mounting terminals for through-hole integration

Single Zener Diodes Applications

• Instrumentation requiring stable voltage references
• Circuit designs demanding low temperature coefficient performance
• Precision analog signal conditioning applications

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements against the manufacturer's datasheet before ordering. Confirm that the TR suffix correctly indicates tape and reel packaging per EIA-296 standards. Ensure the component meets RoHS compliance if required by your assembly process. Cross-reference the part number with official Microchip documentation to validate availability and manufacturing origin.

Single Zener Diodes Selection Notes

Select this component when a nominal 8.4 V reference with high thermal stability is required. The 1N3157A variant offers the lowest temperature coefficient within the series. Consider the DO-7 package dimensions for board layout constraints. Evaluate operating currents near 10 mA to maintain optimal voltage-temperature stability characteristics.

Single Zener Diodes Part Context

This device belongs to the 1N3154 through 1N3157A series of Zero-TC Reference Diodes. The series provides various temperature coefficients ranging from 0.01%/°C to 0.001%/°C. Military qualifications are available via JAN prefixes, while radiation-hardened versions use the RH prefix. The standard commercial version utilizes annealed matte-Tin plating.

Single Zener Diodes Replacement Considerations

Equivalent parts include 1N3157A without the TR suffix for bulk packaging. Variants like 1N3156A offer different temperature coefficients. Military equivalents require JAN or JANTXV prefixes. Radiation-hardened options utilize the RH3157A designation.