1N5349/TR12

Overview

The Microchip Technology 1N5349/TR12 is a silicon 5-watt Zener diode with a nominal voltage of 12 V and ±5% tolerance. It operates in the -65°C to +150°C range, features a T-18 axial lead package, and includes a TR suffix for tape and reel packaging.

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 mounting terminals for through-hole integration

Applications

• Voltage regulation circuits requiring 5-watt power dissipation
• High surge stress environments
• Through-hole PCB assembly

Procurement Notes

Verify the specific manufacturer origin, as the part number may be sourced from Microsemi or Microchip Technology. Confirm RoHS compliance status and check for active discontinuance notifications before procurement.

Selection Notes

Select this component for applications requiring a 12 V reference with 5 W power handling. Ensure adequate heat sinking is provided to maintain performance within the specified thermal resistance limits.

Part Context

This device belongs to the JEDEC registered 1N5333B through 1N5388B series of axial-leaded 5.0 watt Zeners. The 'TR' suffix indicates availability in tape and reel format per EIA-296 standards.

Replacement Considerations

Consult official datasheets for verified substitutes within the 1N5333B-1N5388B series that match the 12 V specification and 5 W power rating.