1N5351B/TR12

Overview

The Microchip Technology 1N5351B/TR12 is a silicon 5-watt Zener diode with a nominal voltage of 14 V and ±5% tolerance. It operates within a temperature range of -65°C to +150°C, featuring a maximum reverse current of 75 µA at 10.1 V and a dynamic impedance of 2.5 Ω at a test current of 100 mA. The device utilizes an axial-lead T-18 package and is supplied in tape and reel format.

Feature Summary

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

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement systems

Procurement Notes

Verify the component status as discontinued or end-of-life before finalizing designs. Confirm RoHS compliance requirements against specific project standards, noting that standard versions may not meet current environmental directives. Ensure the TR12 suffix matches the required tape and reel packaging specifications for automated assembly processes.

Selection Notes

Select this component when a 14 V reference with 5 W power dissipation capability is required. Consider the thermal resistance characteristics and derating curves for adequate heat sinking. Verify that the ±5% tolerance aligns with circuit precision requirements and that the T-18 package fits the available board space.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of 5-watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series offers a wide selection of voltages from 3.3 V to 200 V with various tolerance options identified by suffix letters.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.