1N4733CPE3/TR8

Overview

The Microchip Technology 1N4733CPE3/TR8 is a silicon 1-watt Zener diode in the 1N4728AP through 1N4764AP series. It provides voltage regulation with a nominal Zener voltage of 5.1 V and a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates within an ambient temperature range of -65°C to +150°C and features a plastic DO-41 (DO-204AL) package. Electrical characteristics include a maximum dynamic impedance of 7 Ohms at a test current of 49 mA, a maximum reverse current of 10 µA, and a forward voltage of 1.2 V maximum at 200 mA.

Feature Summary

• Provides precise voltage regulation with a ±2% tolerance on the nominal Zener voltage.
• Features a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards.
• Offers flexible axial-lead mounting terminals for standard installation.
• Compliant with RoHS directives and classified as Level 1 moisture sensitivity.

Applications

• Voltage regulation circuits requiring stable reference voltages.
• Protection against overvoltage conditions in electronic systems.
• Clipping and clamping applications in signal processing.

Procurement Notes

Verify that the ordering suffix matches the required specifications. The 'P' indicates plastic construction, while 'e3' confirms RoHS compliance. The 'TR' suffix denotes tape and reel packaging. Confirm the 'C' suffix corresponds to the necessary ±2% voltage tolerance before procurement to ensure alignment with design requirements.

Selection Notes

Select this component when a 5.1 V reference with high precision is required. The plastic package offers lower thermal resistance compared to glass-body options. Ensure the application current remains within the specified limits to maintain the ±2% tolerance. Consider the operating temperature range and power dissipation derating curves for thermal management.

Part Context

This part belongs to the 1N4728AP through 1N4764AP series of 1.0 watt Zener diodes manufactured by Microsemi, now part of Microchip Technology. The series covers a voltage selection from 3.3 to 100 volts. These devices are JEDEC registered and available in various screening levels. The plastic encapsulated version provides a robust alternative to traditional glass-body diodes.

Replacement Considerations

Equivalent parts include the 1N4733C without the plastic or RoHS suffixes if those constraints are not critical. Surface mount equivalents such as SMAJ4733A or MLL4733A are available for space-constrained designs. Verify that substitute components meet the same ±2% tolerance and power dissipation requirements.