1N3154UR-1

Overview

The Microchip Technology 1N3154UR-1 is a temperature-compensated Zener reference diode with an 8.00 V to 8.80 V nominal voltage range at a test current of 10 mA. It features a maximum impedance of 15 ohms and a reverse leakage current of 10 µA at 5.5 V. The device operates within a temperature range of -65°C to +175°C, dissipating up to 500 mW DC power. It utilizes a hermetically sealed glass DO-7 (DO-204AA) axial-lead package.

Feature Summary

• Provides minimal voltage change over a broad temperature range for stable reference applications
• Features internal metallurgical bonds for structural integrity
• Offers flexible axial-lead mounting terminals in a hermetically sealed glass case

Applications

• Instrumentation requiring stable voltage references
• Circuit designs demanding low temperature coefficient performance
• Military qualification systems utilizing JAN or JANTX prefixes

Procurement Notes

Verify the specific suffix requirements against official datasheets before ordering. Confirm that the UR-1 designation aligns with the intended military or commercial qualification level. Ensure compatibility with MIL-PRF-19500/158 standards if applicable. Check for RoHS compliance needs versus traditional tin-lead terminal options. Validate packaging specifications such as tape and reel availability if required by assembly processes.

Selection Notes

Select this component when a precise 8.4 V nominal reference with tight temperature stability is required. Consider the available temperature coefficients ranging from 0.01%/°C to 0.001%/°C based on circuit precision needs. Evaluate the need for radiation-hardened variants or specific military qualifications like JANTXV. Ensure the operating current matches the optimal 10 mA setting for best voltage-temperature stability.

Part Context

This part belongs to the popular 1N3154 through 1N3157A series of Zero-TC Reference Diodes manufactured by Microchip Technology's Scottsdale Division. The series provides a selection of 8.4 V nominal voltages designed for minimal voltage change with temperature. These devices are widely used in high-reliability applications where standard Zener diodes lack sufficient thermal stability.

Replacement Considerations

Equivalent parts include other JEDEC registered 1N3154 series diodes from different manufacturers. Radiation-hardened equivalents use the RH prefix instead of 1N. Commercial RoHS-compliant versions utilize the e3 suffix. Military qualified versions require JAN, JANTX, or JANTXV prefixes.