1N4734CPE3/TR8

Overview

The Microchip Technology 1N4734CPE3/TR8 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 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 RoHS compliance via the 'e3' suffix. 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 maximum forward voltage of 1.2 V at 200 mA.

Feature Summary

• Provides precise voltage regulation with a standard 2% tolerance on nominal Zener voltage.
• Features flexible axial-lead mounting terminals for through-hole applications.
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards.
• RoHS compliant devices available with annealed matte-Tin plating solderable per MIL-STD-750.

Applications

• Voltage regulation over broad operating current and temperature ranges
• General purpose clipping and clamping circuits
• Reference voltage sources in electronic circuits

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'P' indicates plastic construction, 'C' denotes a 2% voltage tolerance, and 'e3' confirms RoHS compliance. Confirm the 'TR' suffix corresponds to tape and reel packaging requirements. Ensure compatibility with JEDEC registered part numbers and check for any specific military screening prefixes if applicable.

Selection Notes

Select this component when a 5.6 V reference with high precision is required. The plastic encapsulation offers lower thermal resistance compared to glass-body options. Consider the 1 W power dissipation rating and derating curves for thermal management. Verify that the 2% tolerance meets circuit requirements, as other suffixes offer different tolerances.

Part Context

This part belongs to the popular 1N4728AP through 1N4764AP series of 1.0 watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers a voltage selection from 3.3 to 100 volts. The 'C' suffix specifically identifies the tighter 2% tolerance variant, distinguishing it from the standard 5% ('A') or 10% (no suffix) versions.

Replacement Considerations

Equivalent parts include 1N4734A (5% tolerance), 1N4734D (1% tolerance), and 1N4734G (glass body). Surface mount equivalents are SMAJ4734A and MLL4734A. Verify lead length and thermal resistance differences when substituting glass-body variants.