1N5351E3/TR12

Overview

The Microchip Technology 1N5351E3/TR12 is a silicon Zener diode with a nominal voltage of 14V and a tolerance of ±5%. It operates within the JEDEC registered 1N5333B through 1N5388B series, providing a maximum power dissipation of 5.0 watts at 25°C. The device features an axial-lead T-18 plastic package and RoHS compliance indicated by the e3 suffix. Electrical characteristics include a test current of 100 mA, a maximum dynamic impedance of 2.5 ohms, and a maximum reverse current of 1.0 µA.

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 standard through-hole applications
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack

Applications

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

Procurement Notes

Verify that the part number includes the 'e3' suffix to confirm RoHS compliance and the specific 'TR12' tape and reel packaging configuration. Ensure the ordering matches the exact suffix requirements for the desired tolerance level and screening conditions. Confirm availability directly with authorized distributors as stock levels fluctuate.

Selection Notes

Select this component when a 14V Zener reference with ±5% tolerance is required for 5-watt power dissipation applications. Consider the thermal resistance of 25°C/W junction-to-lead for heat sinking requirements. Verify that the lead length and package dimensions fit the target PCB layout constraints.

Part Context

This component belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi (now Microchip Technology). 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 industrial and commercial environments.

Replacement Considerations

Equivalent parts within the same series include 1N5350B and 1N5352B. Surface mount equivalents are available as SMBJ5351 or SMBG5351. Military screening options exist with MQ, MX, or MV prefixes.