1N5355C/TR12

Overview

The Microchip Technology 1N5355C/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, manufactured by Microsemi. It provides voltage regulation at a nominal Zener voltage of 18V with a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and features an axial lead T-18 package. This specific part number includes the 'e3' suffix for RoHS compliance and the 'TR12' suffix indicating tape and reel packaging.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals suitable for through-hole applications
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage regulation in power supply circuits
• Reference voltage sources for electronic systems
• Overvoltage protection components

Procurement Notes

Verify that the ordering suffixes match the required specifications: 'e3' confirms RoHS compliance, while 'TR12' indicates the specific tape and reel packaging format. Confirm the 'C' suffix corresponds to the necessary ±2% voltage tolerance. Ensure the component meets the required thermal dissipation capabilities for the intended application environment.

Selection Notes

Select this component when a precise 18V reference with ±2% tolerance is required in a 5-watt axial package. Consider the low thermal resistance design for high DC current operation with adequate heat sinking. Verify compatibility with the T-18 plastic encapsulated body and ensure the operating temperature range fits the system constraints.

Part Context

This component 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 3.3V to 200V with various tolerance options identified by suffix letters. These devices are designed for robust performance in demanding environments.

Replacement Considerations

Equivalent parts include other 1N5355 variants with different tolerances (e.g., 1N5355A for ±10%, 1N5355B for ±5%) or surface mount equivalents like SMBJ5355. Verify pinout compatibility and power dissipation ratings before substitution.