1N5385C/TR8

Overview

The Microsemi Corporation 1N5385C/TR8 is a silicon 5.0-watt Zener diode with a nominal voltage of 170 V and a ±2% tolerance. It operates within a temperature range of -65°C to +150°C and features a T-18 axial lead package. The device has a maximum dynamic impedance of 380 Ohms, a reverse leakage current of 500 nA at 122 V, and a forward voltage of 1.2 V at 1 A.

Feature Summary

• Provides precise voltage regulation with tight ±2% tolerance
• Operates reliably across extreme temperature ranges from -65°C to +150°C
• Withstands high surge stresses and offers minimal voltage change versus current
• Features flexible axial-lead mounting terminals for secure installation

Applications

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

Procurement Notes

Verify the specific suffix 'TR8' against official documentation to confirm tape and reel packaging specifications. Confirm RoHS compliance status as standard versions may not be compliant. Ensure the manufacturer designation matches current corporate records following industry consolidations.

Selection Notes

Select this component when a stable 170 V reference with high precision is required. The T-18 package supports high thermal dissipation capabilities suitable for demanding environments. Verify that the operating current remains within the specified limits to maintain accurate regulation performance.

Part Context

This part belongs to the 1N5333B through 1N5388B series of JEDEC registered axial-leaded Zener diodes. The series covers a wide voltage selection from 3.3 V to 200 V. The C suffix specifically denotes a tighter ±2% voltage tolerance compared to standard B or A suffix variants.

Replacement Considerations

Consult official datasheets for equivalent parts within the same series. Verify pinout compatibility and thermal resistance characteristics before substitution.