1N4759APE3/TR8

Overview

The Microchip Technology 1N4759APE3/TR8 is a silicon 1-watt Zener diode in the 1N4728AP through 1N4764AP series, manufactured by Microsemi. It features a plastic encapsulated DO-41 (DO-204AL) axial-lead package with an e3 suffix indicating RoHS compliance and annealed matte-tin plating. The device provides voltage regulation at a nominal Zener voltage of 62 volts with a standard 5% tolerance. Key electrical parameters include a test current of 4.0 mA, a maximum dynamic impedance of 125 ohms at the test current, and a maximum reverse current of 5 µA at a test voltage of 5 volts. The component supports a steady-state power dissipation of 1.0 watt and operates within a temperature range of -65°C to +150°C.

Feature Summary

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

Applications

• Voltage regulation circuits requiring 62V reference.
• Overvoltage protection for electronic systems.
• Power supply output stabilization.

Procurement Notes

Verify that the ordering suffix TR8 corresponds to the tape and reel packaging option described in the datasheet as adding a TR suffix. Confirm the e3 suffix indicates RoHS compliant annealed matte-tin plating. Ensure the A suffix is present to guarantee the specified 5% voltage tolerance rather than the standard 10% tolerance associated with no suffix identification.

Selection Notes

Select this component when a 62-volt Zener reference with 5% tolerance is required in a plastic axial-lead package. The 1-watt power rating and wide thermal operating range make it suitable for general-purpose regulation. Consider the plastic construction for lower thermal resistance compared to glass-body options if heat dissipation characteristics are critical for the specific PCB layout.

Part Context

This part belongs to the JEDEC registered 1N4728A through 1N4764A series of 1.0-watt Zener diodes. The series offers an extensive voltage selection from 3.3 to 100 volts. The plastic encapsulated variants provide moisture classification Level 1 without requiring dry pack storage, facilitating easier handling and assembly compared to other moisture-sensitive components.

Replacement Considerations

Surface mount equivalents such as SMAJ4759A or MLL4759A are available from the same manufacturer family. Verify pin compatibility and thermal management requirements when transitioning between axial-lead and surface-mount form factors.