1N5377A/TR8

Overview

The Microsemi Corporation 1N5377A/TR8 is a silicon Zener diode with a nominal voltage of 91 V and a tolerance of ±10%. It features a maximum power dissipation of 5 W, a test current of 15 mA, and a maximum dynamic impedance of 75 Ohms. The device operates within a temperature range of -65°C to +150°C and utilizes an axial T-18 package.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for through-hole integration

Applications

• Voltage regulation circuits requiring 5-watt power handling
• High-density electronic assemblies utilizing axial lead components
• Power supply protection against voltage spikes and surges

Procurement Notes

Verify the specific suffix 'TR8' corresponds to tape and reel packaging requirements. Confirm RoHS compliance status as standard A-suffix devices may not be compliant. Ensure thermal management design accounts for the specified junction-to-lead thermal resistance during operation.

Selection Notes

Select this component when a 91 V Zener reference is required with ±10% tolerance. Consider the T-18 package dimensions for board layout constraints. Evaluate thermal derating curves if ambient temperatures exceed standard limits or if steady-state power dissipation approaches the 5-watt maximum rating.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. The 'A' suffix indicates a standard ±10% voltage tolerance, while the 'TR8' suffix denotes the specific tape and reel packaging format.

Replacement Considerations

Surface mount equivalents are available in the SMBJ5333 to SMBJ5388B or SMBG5333B to SMBG5388B series. These provide identical electrical characteristics in surface mount packages suitable for low-profile mounting applications.