1N5349CE3/TR12

Overview

The Microchip Technology 1N5349CE3/TR12 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation with a nominal Zener voltage of 12 V and a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates in an axial T-18 package, supports through-hole mounting, and features RoHS compliance via the 'e3' suffix. It is supplied in tape and reel packaging, as denoted by the 'TR12' suffix.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead terminals for secure through-hole mounting
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Compliant with RoHS standards and moisture classification Level 1

Applications

• Voltage regulation circuits requiring high power dissipation
• Power supply protection against overvoltage conditions
• Reference voltage generation in industrial equipment

Procurement Notes

Verify the specific part number 1N5349CE3/TR12 against official manufacturer documentation to confirm availability and specifications. Ensure that the C suffix corresponds to the required ±2% tolerance and that the TR12 designation matches the intended tape and reel packaging format for your assembly process.

Selection Notes

Select this component when a 5-watt power rating and a precise 12 V reference are necessary. The ±2% tolerance offers tighter control than standard B-suffix devices. Consider the thermal resistance and derating curves if the application involves high ambient temperatures or limited heat sinking capabilities on FR4 PCBs.

Part Context

This component belongs to the Microsemi (now Microchip) 1N5333B through 1N5388B series of silicon Zener diodes. These devices are designed for applications requiring robust voltage regulation at higher power levels compared to standard small-signal diodes. The series covers a wide voltage range from 3.3 V to 200 V with various tolerance options.

Replacement Considerations

Compatible substitutes include other 1N5349 variants such as 1N5349B (±5% tolerance) or 1N5349D (±1% tolerance), provided the tolerance requirements align. Ensure any replacement maintains the 5 W power rating and T-18 axial package form factor.