1N4759AP/TR12

Overview

The Microchip Technology 1N4759AP/TR12 is a silicon 1-watt Zener diode in the 1N4728A through 1N4764A series. It provides voltage regulation at a nominal Zener voltage of 62 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features a plastic DO-41 (DO-204AL) axial-lead package. Electrical characteristics include a maximum dynamic impedance of 125 Ohms at a test current of 4.0 mA, a maximum reverse current of 5 µA, and a maximum regulator current of 14 mA.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard through-hole applications
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 flammability standards

Applications

• Voltage regulation circuits requiring 62 V reference
• Power supply protection and clamping applications
• General-purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify that the specific part number matches the required electrical parameters, particularly the 62 V Zener voltage and 1 W power dissipation rating. Confirm the package type is the plastic DO-41 variant and ensure the tape and reel packaging aligns with automated assembly requirements. Cross-reference manufacturer documentation for any updates regarding RoHS compliance or military screening prefixes if applicable to your design specifications.

Selection Notes

Select this component when a 62 V Zener diode with a 1 W power rating is required in an axial-lead plastic package. The 5% voltage tolerance suits general regulation tasks where tighter precision is not critical. Consider the thermal resistance of 45 °C/W junction-to-lead for heat dissipation planning. Ensure the operating environment stays within the specified -65°C to +150°C temperature range for reliable performance.

Part Context

This component belongs to the widely used 1N47xxA series of silicon Zener diodes, originally standardized by JEDEC. The 'P' suffix indicates a plastic encapsulated body, offering lower thermal resistance compared to glass-body options. The 'TR' suffix denotes tape and reel packaging for high-volume manufacturing, while the 'e3' suffix typically signifies lead finish compliance, though availability varies by manufacturer lot.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4759A parts in the DO-41 package. Verify that replacement units maintain the 62 V nominal voltage, 1 W power rating, and ±5% tolerance. Ensure the alternative component meets the same thermal and electrical specifications for direct integration into existing designs.