1N5356/TR12

Overview

The Microchip Technology 1N5356/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, manufactured by Microsemi. It provides voltage regulation with a nominal Zener voltage of 19 V and a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates in an axial T-18 package with a tape and reel configuration specified by the 'TR12' suffix. Key electrical characteristics include a test current of 65 mA, a maximum dynamic impedance of 3.0 Ohms, and a maximum reverse leakage current of 0.5 µA. It supports a wide operating temperature range from -65°C to +150°C.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Moisture classification Level 1 requiring no dry pack storage

Applications

• Voltage regulation circuits requiring 5-watt power dissipation
• High current applications with adequate heat sinking
• General purpose reference voltage generation

Procurement Notes

Verify the specific ordering suffixes against official documentation to confirm exact tolerances and packaging formats. Confirm RoHS compliance status and lead material specifications as required by project standards. Check for any discontinuance notifications or product change notices that may affect long-term availability or manufacturing origin.

Selection Notes

Select this component when a precise 19 V regulation point is needed with tight ±2% tolerance. Ensure the application can accommodate the 5-watt power rating and provide sufficient thermal management, as steady-state power dissipation depends on mounting conditions. Verify that the axial lead form factor fits the PCB layout constraints.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes originally produced by Microsemi's Scottsdale Division. The series offers a wide selection of voltages from 3.3 V to 200 V with various tolerance options identified by suffix letters. These devices are JEDEC registered and designed for robust performance in demanding environments.

Replacement Considerations

Cross-reference with other 1N5356 variants such as 1N5356B (±5% tolerance) or 1N5356D (±1% tolerance) if tolerance requirements differ. Verify mechanical compatibility with the T-18 package and ensure equivalent power dissipation capabilities.