1N3155A

Single Zener Diodes Overview

The Microchip Technology 1N3155A/TR is a temperature-compensated Zener reference diode housed in a DO-204AA (DO-7) glass axial leaded package. It provides a nominal Zener voltage of 8.4 V with a maximum tolerance of 5% and a low voltage temperature coefficient of 0.005%/°C. The device operates at a test current of 10 mA, dissipating up to 500 mW of power. It features a maximum reverse leakage current of 10 µA and a Zener impedance of 15 Ohms. The component supports an extended operating temperature range from -65°C to +175°C and is supplied in reel packaging.

Single Zener Diodes Feature Summary

• Temperature compensated design for minimal voltage change across wide thermal ranges
• Hermetically sealed glass DO-7 axial leaded construction
• Low voltage temperature coefficient for high stability applications

Single Zener Diodes Applications

• Precision voltage reference circuits
• Temperature compensated oscillator circuits
• High-stability analog signal conditioning

Single Zener Diodes Procurement Notes

Verify the specific suffix TR indicates reel packaging configuration. Confirm RoHS compliance status as documentation indicates non-compliance for standard variants. Ensure the manufacturer designation aligns with current Microchip Technology holdings following historical acquisitions. Validate that the 5% tolerance meets circuit requirements before procurement.

Single Zener Diodes Selection Notes

Select this component when a stable 8.4 V reference is required with superior thermal performance compared to standard Zener diodes. The DO-7 package suits through-hole designs requiring hermetic sealing. Consider the 10 mA test current requirement for biasing network design. Evaluate the 15 Ohm impedance for dynamic load regulation needs in sensitive analog paths.

Single Zener Diodes Part Context

This part belongs to the 1N3154 thru 1N3157A series of Zero-TC Reference Diodes. These devices are designed to provide a selection of 8.4 V nominal voltages with extremely low temperature coefficients. The series is available in various military qualifications and commercial packages, serving as a foundational reference element in precision instrumentation.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other 8.4 V temperature-compensated Zener diodes in DO-7 packages. Verify matching temperature coefficients and tolerance levels. Check if alternative manufacturers offer RoHS-compliant versions with equivalent electrical characteristics for modern assembly processes.