1N4758AP/TR12

Overview

The Microchip Technology 1N4758AP/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 reverse current of 5 µA at a test voltage of 47.1 V. Packaged in tape and reel format per EIA-296 standards, it utilizes void-free transfer molded thermosetting epoxy meeting UL94V-0 requirements.

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

Applications

• Voltage regulation circuits requiring 56 V reference
• Power supply protection against overvoltage conditions
• General-purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify that the specific ordering suffix matches the required packaging configuration, as the TR designation indicates tape and reel supply. Confirm RoHS compliance status if environmental regulations apply to your assembly process. Ensure the manufacturer source aligns with Microchip Technology or authorized distributors to guarantee component authenticity and traceability.

Selection Notes

Select this component when a 56 V Zener voltage with ±5% tolerance is required for power dissipation up to 1.0 watt. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the axial lead form factor for manual insertion or automated through-hole assembly processes where surface mount alternatives are unsuitable.

Part Context

This part belongs to the JEDEC registered 1N4728A to 1N4764A series of silicon Zener diodes. The 'P' suffix designates the plastic encapsulated construction, while the 'A' suffix specifies the 5% voltage tolerance. The 'TR' suffix denotes the tape and reel packaging option, facilitating high-volume automated placement.

Replacement Considerations

Surface mount equivalents such as SMAJ4758A or MLL4758A are available from the same manufacturer family. Verify that any substitute maintains the required 1.0 W power rating and 56 V Zener voltage specifications.