1N5373/TR12

Overview

The Microchip Technology 1N5373/TR12 is a silicon 5-watt Zener diode with a nominal voltage of 68 V. It features a ±5% tolerance and operates within a temperature range of -65°C to +150°C. The device has a maximum reverse current of 0.5 µA, a dynamic impedance of 44 Ohms, and a test current of 20 mA. Packaged in T-18 axial leads, it supports tape and reel mounting.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Features flexible axial-lead terminals for secure mechanical mounting

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement systems

Procurement Notes

Verify the component origin as the datasheet identifies Microsemi Scottsdale Division as the manufacturer. Confirm RoHS compliance status via the e3 suffix designation. Ensure the TR12 suffix aligns with standard EIA-296 tape and reel specifications before procurement.

Selection Notes

Select this component for applications requiring 5-watt power dissipation at 25°C. Verify thermal management requirements against the junction-to-lead thermal resistance. Ensure the circuit design accommodates the specified maximum regulator current and surge current limits.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of axial-leaded 5.0 watt Zener diodes. The series covers a voltage selection from 3.3 to 200 volts. The B suffix indicates a standard voltage tolerance of plus or minus 5 percent.

Replacement Considerations

Equivalent parts include other 1N5373 variants from different manufacturers. Surface mount equivalents are available in SMBJ5373 or SMBG5373 packages.