1N5351BE3/TR8

Overview

The Microchip Technology 1N5351BE3/TR8 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333B-1N5388B series. It provides voltage regulation at a nominal Zener voltage of 14 V with a ±5% tolerance, indicated by the 'B' suffix. The device operates in a T-18 axial lead package and supports tape and reel packaging via the 'TR' suffix. Electrical characteristics include a test current (IZT) of 100 mA, a maximum dynamic impedance (ZZ) of 2.5 Ohms, and a maximum reverse current (IR) of 1.0 µA tested at 10.1 V. The component withstands a maximum regulator current (IZM) of 10.6 A and features a thermal resistance of 25 °C/W junction to lead.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and offers minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for through-hole applications
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

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

Procurement Notes

Verify the specific ordering suffixes against official documentation to confirm compliance requirements. The 'e3' suffix indicates RoHS compliance, while 'TR' denotes tape and reel packaging. Confirm that the manufacturer designation aligns with current corporate structures following acquisitions, as datasheets may reference legacy names like Microsemi. Ensure the procurement channel provides valid traceability for the component lot.

Selection Notes

Select this component when a 14 V regulated output is required within a 5-watt power dissipation envelope. The ±5% tolerance suits general-purpose regulation where tighter precision is unnecessary. Verify that the application can accommodate the 100 mA test current and that adequate heat sinking is provided to manage the 25 °C/W thermal resistance. Ensure the T-18 axial package fits the mechanical constraints of the target PCB layout.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microchip Technology's Scottsdale Division. The series covers a wide voltage selection from 3.3 V to 200 V. These devices are JEDEC registered and designed for high DC currents with adequate heat sinking. The plastic encapsulated body meets UL94V-0 standards and offers Level 1 moisture classification without requiring dry pack storage.

Replacement Considerations

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