1N4753P/TR12

Overview

The Microchip Technology 1N4753P/TR12 is a silicon planar Zener diode from the 1N4728AP through 1N4764AP series, designed for voltage regulation applications. It features a plastic DO-41 (DO-204AL) axial-lead package with a void-free transfer molded thermosetting epoxy body. The device provides a nominal Zener voltage of 36V at a test current of 7.0mA, with a maximum dynamic impedance of 50 ohms and a maximum reverse current of 5µA at 25V. Rated for 1.0 watts of power dissipation at 25°C, it operates within a temperature range of -65°C to +150°C. The 'TR12' suffix indicates tape and reel packaging compliant with EIA-296 standards.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals suitable for standard PCB assembly
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 flame retardant ratings
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Voltage regulation in electronic circuits
• Surge protection devices
• Reference voltage sources

Procurement Notes

Verify that the specific part number matches the required JEDEC registration and tolerance class. Confirm the presence of the 'P' suffix for plastic construction and 'TR' for tape and reel packaging. Ensure compliance with RoHS requirements if applicable by checking for the 'e3' suffix. Validate thermal resistance parameters against the intended mounting conditions on FR4 PC boards.

Selection Notes

Select this component when a 36V Zener voltage with 5% tolerance is required in an axial-lead package. Consider the 1.0W power rating and thermal resistance characteristics for heat dissipation needs. Compare against glass-body options if lower thermal resistance is not critical. Verify compatibility with surface mount equivalents like SMAJ or MLL series if board space constraints exist.

Part Context

This device belongs to the popular 1N4728AP through 1N4764AP series of 1.0 watt Zener diodes manufactured by Microsemi, now part of Microchip Technology. The series offers extensive voltage selection from 3.3 to 100 volts. These plastic encapsulated Zeners are moisture classified as Level 1, requiring no dry pack. Military screening levels are available via specific prefixes.

Replacement Considerations

Surface mount equivalents include SMAJ4753A and MLL4753A. Glass-body versions may be identified by a 'G' suffix instead of 'P'. Check for tighter tolerance variants using 'C' (2%) or 'D' (1%) suffixes if precision is required.