1N4758PE3/TR12

Overview

The Microchip Technology 1N4758PE3/TR12 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation with a nominal Zener voltage of 56 V and a standard tolerance of ±5%. The device features a maximum dynamic impedance of 110 Ohms at a test current of 4.5 mA and a maximum reverse leakage current of 5 µA at 22.5 V. It operates within a temperature range of -65°C to +150°C and includes RoHS compliance indicated by the e3 suffix.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• Constructed with void-free transfer molded thermosetting epoxy meeting UL94V-0 standards
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Voltage regulation circuits requiring 56 V reference
• Power supply protection and clamping applications
• General-purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify that the ordering suffix TR12 corresponds to the tape and reel packaging option specified in the datasheet. Confirm the presence of the e3 suffix indicates RoHS compliant annealed matte-Tin plating solderable per MIL-STD-750 method 2026. Ensure the component matches the Microsemi Scottsdale Division specifications for the 1N4758A JEDEC type number.

Selection Notes

Select this component when a 56 V Zener voltage with ±5% tolerance is required for power dissipation up to 1.0 watts. Consider the plastic DO-41 package for lower thermal resistance compared to glass-body options. Verify compatibility with systems requiring Level 1 moisture classification without dry pack requirements.

Part Context

This part belongs to the 1N4728AP through 1N4764AP series of 1.0-watt Zener diodes originally manufactured by Microsemi's Scottsdale Division. The series offers an extensive voltage selection from 3.3 to 100 volts. The 'P' suffix designates plastic construction, while 'e3' denotes RoHS compliance. These devices are JEDEC registered and available in various screening levels.

Replacement Considerations

Compatible replacements include other 1N4758A variants with matching electrical characteristics. Surface mount equivalents such as SMAJ4758A or MLL4758A are available from the manufacturer. Verify that substitute parts maintain the same 56 V Zener voltage and 1.0 W power rating.