1N5377BE3/TR12

Overview

The Microsemi Corporation 1N5377BE3/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, designed for voltage regulation across broad operating currents and temperature ranges. It features a nominal Zener voltage of 91 V with a ±5% tolerance (indicated by the 'B' suffix) and operates within a junction-to-lead thermal resistance of 25 °C/W. The device utilizes an axial T-18 package with void-free transfer molded thermosetting epoxy meeting UL94V-0 standards. Electrical characteristics include a maximum dynamic impedance of 75 Ohms at a test current of 15 mA, a maximum reverse leakage current of 500 nA tested at 65.5 V, and a steady-state power dissipation capability of 5 watts at lead temperatures below 25°C.

Feature Summary

• Provides stable voltage regulation over a wide range of operating currents and temperatures.
• Features flexible axial-lead mounting terminals suitable for through-hole applications.
• Withstands high surge stresses and exhibits minimal changes in voltage versus current.
• RoHS compliant devices are available with the e3 suffix indicating matte-tin plating.

Applications

• Voltage regulation in electronic circuits requiring 5-watt power handling.
• High-density and low-profile mounting scenarios using equivalent surface mount packages.
• Applications necessitating operation within -65°C to +150°C temperature extremes.

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'e3' denotes RoHS compliance with matte-tin plating, while 'TR12' indicates tape and reel packaging per EIA-296 standards. Confirm the 'B' suffix corresponds to the necessary ±5% voltage tolerance. Ensure the component meets moisture classification Level 1 requirements without dry pack constraints. Cross-reference the manufacturer's datasheet for any updates regarding screening levels or environmental compliance before finalizing procurement orders.

Selection Notes

Select this component when a 91 V Zener voltage with ±5% tolerance is required for through-hole assembly. Consider the 5-watt power dissipation rating and ensure adequate heat sinking is provided to maintain lead temperatures below 25°C for full power operation. Evaluate the 75 Ohm dynamic impedance against circuit sensitivity requirements. Verify compatibility with FR4 PC board mounting if utilizing the 85°C/W junction-to-ambient thermal resistance specification.

Part Context

This part belongs to the 1N5333B through 1N5388B series of JEDEC registered axial-leaded Zener diodes manufactured by Microsemi Corporation. The series offers a voltage selection from 3.3 to 200 volts with various tolerance options identified by suffix letters. These plastic encapsulated devices are designed for high maximum DC currents with low thermal resistance and are available in military equivalent screening levels with specific prefixes.

Replacement Considerations

Surface mount equivalents such as SMBG5377B provide identical electrical characteristics in a DO-215AA package. For higher precision requirements, variants with C or D suffixes offering ±2% or ±1% tolerances are available within the same series. Military screening options like JAN, JANTX, or JANTXV can be obtained by adding MQ, MX, or MV prefixes respectively.