1N5342AE3/TR12

Single Zener Diodes Overview

The Microchip Technology 1N5342AE3/TR12 is a silicon 5.0-watt Zener diode in the JEDEC registered 1N5333-5388B series, designed for voltage regulation from 3.3 to 200 volts. It features an axial-lead T-18 package with a void-free transfer molded thermosetting epoxy body. The device operates within a temperature range of -65°C to +150°C and includes RoHS compliance via the e3 suffix. The 'A' suffix indicates a standard ±10% voltage tolerance, while the TR12 suffix denotes tape and reel packaging.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals suitable for through-hole applications
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020

Single Zener Diodes Applications

• Voltage regulation circuits requiring high power dissipation
• Power supply protection against overvoltage conditions
• Reference voltage generation in industrial equipment

Single Zener Diodes Procurement Notes

Verify the specific suffixes on the component marking to confirm the exact voltage tolerance and packaging format. Ensure that the procurement documentation explicitly states RoHS compliance for the e3 designation. Confirm the manufacturer origin, as this part was originally produced by Microsemi before its acquisition by Microchip Technology. Check for any military screening prefixes if higher reliability standards are required for the application.

Single Zener Diodes Selection Notes

Select this component when a 5-watt power rating is necessary for thermal management in high-current applications. The axial lead configuration allows for easy integration into printed circuit boards with adequate copper pad areas for heat sinking. Consider the ±10% tolerance if precise voltage referencing is not critical. Evaluate the thermal resistance characteristics to ensure proper heat dissipation under steady-state operating conditions.

Single Zener Diodes Part Context

This device belongs to the 1N5333B through 1N5388B series of silicon Zener diodes manufactured by Microchip Technology'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 diodes are moisture classification Level 1 and do not require dry packing. The series also has surface mount equivalents available in SMBJ and SMBG packages.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 5-watt axial Zener diodes with matching voltage ratings and tolerances. Verify compatibility regarding package dimensions and thermal resistance characteristics. Surface mount alternatives such as the SMBJ or SMBG series may be considered if board space is limited, provided the power derating curves are respected.