1N4748CPE3/TR8

Overview

The Microchip Technology 1N4748CPE3/TR8 is a silicon 1.0-watt Zener diode in a plastic DO-41 axial package. It provides voltage regulation with a nominal Zener voltage of 22 V and a tight tolerance of ±2%. The device operates within a temperature range of -65°C to +150°C, featuring a maximum dynamic impedance of 23 Ohms at a test current of 11.5 mA. It includes RoHS compliance via the e3 suffix and tape-and-reel packaging indicated by the TR suffix.

Feature Summary

• Provides precise voltage regulation with a standard 2% tolerance for stable reference applications
• Utilizes void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Offers flexible axial-lead mounting terminals suitable for through-hole PCB integration
• Ensures moisture classification Level 1 requiring no dry pack storage

Applications

• Voltage regulation circuits requiring stable reference levels
• Protection against overvoltage transients in electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify that the ordering suffixes correctly identify the specific attributes required for your design. The 'e3' suffix confirms RoHS compliance, while the 'TR' suffix indicates tape-and-reel packaging. Confirm the manufacturer source matches the specified JEDEC registered part number to ensure authenticity and correct electrical characteristics.

Selection Notes

Select this component when a 22 V Zener voltage with high precision is necessary. The ±2% tolerance distinguishes it from standard 5% or 10% variants. Ensure the circuit can handle the 1.0 W power dissipation and verify compatibility with the DO-41 axial lead form factor for the intended mechanical assembly constraints.

Part Context

This part belongs to the 1N4728AP thru 1N4764AP series of 1.0 watt Zener diodes manufactured by Microsemi (now Microchip). The series covers a voltage selection from 3.3 to 100 volts. The 'C' suffix specifically denotes the tighter 2% voltage tolerance compared to the standard 'A' suffix which offers 5% tolerance.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.