1N5355AE3/TR12

Overview

The Microchip Technology 1N5355AE3/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 18V with a ±10% tolerance, indicated by the 'A' suffix. The device operates within a temperature range of -65°C to +150°C and features an axial lead T-18 package. Electrical characteristics include a maximum reverse current of 0.5 µA at 13V and a maximum dynamic impedance of 2.5 Ω. The component is RoHS compliant (e3 suffix) and supplied in tape and reel packaging (TR suffix).

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range.
• Features flexible axial-lead mounting terminals for through-hole applications.
• Withstands high surge stresses and exhibits minimal voltage change versus current.
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack.

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement systems

Procurement Notes

Verify that the ordering suffixes match the required specifications: 'A' indicates ±10% voltage tolerance, 'e3' confirms RoHS compliance, and 'TR' specifies tape and reel packaging. Confirm the manufacturer origin as Microsemi/Microchip Technology. Ensure the component meets the specified thermal resistance and power dissipation requirements for the intended application environment.

Selection Notes

Select this component when a 5-watt power rating and 18V regulation are required. The ±10% tolerance suits general-purpose applications where tighter precision is not critical. Consider the T-18 axial package for through-hole mounting. Evaluate thermal management needs, as steady-state power dissipation depends on heat sinking and ambient temperature conditions.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes originally developed by Microsemi's Scottsdale Division. The series offers a wide selection of voltages from 3.3V to 200V with various tolerance options identified by suffix letters. These plastic encapsulated devices are designed for high maximum DC currents with adequate heat sinking.

Replacement Considerations

Compatible substitutes within the same series include 1N5355B, 1N5355C, and 1N5355D, which share identical electrical ratings but differ in voltage tolerance. Other variants like 1N5355MSTR-NDR offer surface mount equivalents.