1N4734CPE3/TR12

Overview

The Microchip Technology 1N4734CPE3/TR12 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, manufactured by Microsemi's Scottsdale Division. It provides voltage regulation with a nominal Zener voltage of 5.6 V and 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 a plastic DO-41 (DO-204AL) axial-lead package. Electrical characteristics include a maximum dynamic impedance of 5 Ohms at a test current of 45 mA, a maximum reverse current of 10 µA, and a steady-state power dissipation of 1.0 watts.

Feature Summary

• Provides precise voltage regulation with a ±2% tolerance on nominal Zener voltage.
• Features a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards.
• Offers flexible axial-lead mounting terminals for standard PCB integration.
• Classified as Level 1 moisture sensitivity requiring no dry pack.

Applications

• Voltage regulation over broad operating current and temperature ranges
• General purpose circuit protection and reference applications
• Power supply output stabilization

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'P' denotes plastic construction, 'e3' indicates RoHS compliance with annealed matte-tin plating, and 'TR12' specifies tape and reel packaging per EIA-296 standards. Confirm the manufacturer origin, as this component originates from the Microsemi Scottsdale Division. Ensure compatibility with the specified DO-41 package dimensions and lead length requirements for thermal management.

Selection Notes

Select this component when a 5.6 V reference with high precision is required. The 'C' suffix ensures a tighter ±2% tolerance compared to standard 'A' or unmarked variants. The plastic encapsulation offers lower thermal resistance than glass-body options. Verify that the 1.0 W power rating and -65°C to +150°C operating range meet the environmental constraints of the target application.

Part Context

This part belongs to the JEDEC registered 1N4728A through 1N4764A series of 1.0 watt Zener diodes. The series provides an extensive voltage selection from 3.3 V to 100 V. The specific variant utilizes a plastic encapsulated body, which provides lower thermal resistance compared to the glass-body (G suffix) option available for these same JEDEC part numbers.

Replacement Considerations

Compatible replacements include other 1N4734 variants with matching tolerances, such as 1N4734A (±5%) or 1N4734D (±1%), provided the package and power ratings are compatible. Surface mount equivalents like SMAJ4734A or MLL4734A may be used if footprint adaptation is permitted.