1N4750APE3/TR12

Overview

The Microchip Technology 1N4750APE3/TR12 is a silicon 1-watt Zener diode in the 1N4728AP through 1N4764AP series. It provides voltage regulation with a nominal Zener voltage of 27V 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 5µA at a test voltage of 20.6V. It utilizes a DO-41 axial lead package with void-free transfer molded epoxy body.

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 rating
• RoHS compliant devices available with an e3 suffix indicating annealed matte-Tin plating

Applications

• Voltage regulation circuits requiring 27V reference
• Power supply protection and clamping applications
• General purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm RoHS compliance and tape-and-reel packaging configuration. Confirm that the component meets moisture classification Level 1 requirements, which eliminates the need for dry pack storage prior to assembly. Ensure compatibility with soldering temperatures up to 260°C for ten seconds maximum during installation processes.

Selection Notes

Select this component when a 27V Zener voltage with 5% tolerance is required for power dissipation up to 1.0 watt. Consider the plastic construction for lower thermal resistance compared to glass-body options. Evaluate the axial lead format for mechanical stability in environments where surface mount alternatives are unsuitable. Verify surge current ratings against potential transient events in the target circuit design.

Part Context

This part belongs to the JEDEC registered 1N4728A to 1N4764A series manufactured by Microsemi's Scottsdale Division. The series offers extensive voltage selection from 3.3 to 100 volts. The 'P' suffix denotes plastic encapsulation, while the 'e3' suffix indicates RoHS compliance. Military screening levels are available via additional prefixes such as MQ or MX.

Replacement Considerations

Surface mount equivalents include SMAJ4750A and MLL4750A. Glass-body versions exist under the same JEDEC number with a G suffix. Tighter tolerance variants are available with C (2%) or D (1%) suffixes.