1N4758P/TR12

Overview

The Microchip Technology 1N4758P/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 operates within a temperature range of -65°C to +150°C and features a maximum power dissipation of 1.0 watts at 25°C. Electrical characteristics include a test current of 4.5 mA, a maximum dynamic impedance of 110 Ohms, and a maximum reverse current of 5 µA.

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 a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage regulation circuits
• Power supply protection
• Reference voltage generation

Procurement Notes

Verify that the ordering suffix 'TR' corresponds to tape and reel packaging as specified in the datasheet. Confirm RoHS compliance status by checking for the 'e3' suffix if required. Ensure the manufacturer designation aligns with the source document indicating Microsemi Scottsdale Division or its successor entity. Validate that the component meets the specific JEDEC registration requirements for the 1N4758A type.

Selection Notes

Select this component when a 56 V Zener voltage with ±5% tolerance is required for through-hole assembly. Consider the 1.0 W power dissipation capability and the thermal resistance characteristics for heat management. Compare against glass-body options if lower thermal resistance is not critical. Verify compatibility with the intended operating temperature range of -65°C to +150°C.

Part Context

This part belongs to the popular 1N4728AP through 1N4764AP series of 1.0 watt Zener diodes. The series offers an extensive voltage selection from 3.3 to 100 volts. The 'P' suffix designates plastic construction, providing lower thermal resistance compared to glass-body options. These devices are JEDEC registered and available in various screening levels.

Replacement Considerations

Consult the factory for surface mount equivalents such as SMAJ4758A or MLL4758A. Other tight tolerance options are available with C or D suffixes. Military screening levels can be obtained by adding MQ, MX, MV, or MSP prefixes.