1N4751CPE3/TR8

Overview

The Microchip Technology 1N4751CPE3/TR8 is a silicon 1.0-watt Zener diode housed in a DO-41 (DO-204AL) plastic axial-lead package. It provides voltage regulation with a nominal Zener voltage of 30V 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 40 Ohms at a test current of 8.5 mA, a maximum reverse current of 5 µA at 22.8 V, and a steady-state power dissipation of 1.0 watts.

Feature Summary

• Provides precise voltage regulation with a tight ±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 a broad operating current and temperature range
• General purpose clipping and clamping circuits
• Reference voltage sources in electronic circuits

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'C' indicates a 2% voltage tolerance, 'P' denotes plastic construction, 'e3' confirms RoHS compliance, and 'TR8' specifies tape and reel packaging. Confirm the manufacturer origin, as this part number series originates from Microsemi, now part of Microchip Technology. Ensure the procurement documentation aligns with the specific JEDEC registration data provided in the official datasheet.

Selection Notes

Select this component when a stable 30V reference with high precision is required in an axial-lead form factor. The 1W power rating supports moderate current loads, while the ±2% tolerance suits applications demanding tighter voltage accuracy than standard 5% or 10% variants. Consider the thermal resistance of 45°C/W junction-to-lead for heat dissipation planning in enclosed environments.

Part Context

This device belongs to the popular 1N4728AP through 1N4764AP series of 1.0-watt Zener diodes. The series offers an extensive voltage selection from 3.3 to 100 volts. The 'C' suffix specifically identifies the tighter 2% tolerance variant within this family, distinguishing it from the standard 5% ('A' suffix) and 10% (no suffix) options.

Replacement Considerations

Equivalent parts within the same series include 1N4751AP (5% tolerance) or 1N4751D (1% tolerance). Surface mount equivalents are available as SMAJ4751A or MLL4751A. Verify that any substitute maintains the required 2% tolerance and RoHS compliance status.