1N4758CP/TR12

Overview

The Microchip Technology 1N4758CP/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 at a nominal Zener voltage of 56 V with a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and features RoHS-compliant annealed matte-tin plating on its terminals, designated by the 'e3' suffix. It is supplied in tape and reel packaging, specified by the 'TR' suffix.

Feature Summary

• Provides precise voltage regulation with a standard ±2% tolerance for stable reference applications
• Features flexible axial-lead mounting terminals suitable for through-hole PCB assembly
• Constructed with void-free transfer molded thermosetting epoxy meeting UL94V-0 standards
• Offers low thermal resistance compared to glass-body options for efficient heat dissipation

Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage sources in electronic circuits
• Surge protection and clipping circuits

Procurement Notes

Verify that the ordering suffixes align with specific requirements: 'P' indicates plastic construction, 'C' denotes the ±2% voltage tolerance, 'e3' confirms RoHS compliance with tin plating, and 'TR' specifies tape and reel packaging. Confirm the manufacturer origin as Microsemi or Microchip Technology based on current corporate records. Ensure the component meets moisture classification Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack storage.

Selection Notes

Select this component when a 56 V Zener voltage with high precision is required in a 1-watt power rating. The plastic DO-41 package offers lower thermal resistance than glass equivalents. Consider the ±2% tolerance if tighter voltage accuracy is needed compared to standard 5% or 10% variants. Verify compatibility with surface mount alternatives like SMAJ4758A if space constraints exist.

Part Context

This part belongs to the JEDEC registered 1N4728A to 1N4764A series of 1.0-watt Zener diodes. The series covers a voltage selection from 3.3 to 100 volts. The '1N4758' designation specifically corresponds to the 56-volt breakdown voltage within this extensive lineup of silicon Zener devices designed for general-purpose regulation.

Replacement Considerations

Surface mount equivalents are available as SMAJ4758A or MLL4758A. For military screening levels, prefixes such as MQ, MX, MV, or MSP can be added to JAN, JANTX, JANTXV, or JANS variants respectively.