1N5343E3/TR12

Single Zener Diodes Overview

The Microchip Technology 1N5343E3/TR12 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333B through 1N5388B series. It provides voltage regulation at a nominal Zener voltage of 7.5 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features a T-18 axial lead package. Electrical characteristics include a maximum dynamic impedance of 1.5 Ohms, a maximum reverse current of 10 µA, and a maximum regulator current of 630 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Features flexible axial-lead mounting terminals for through-hole integration
• Moisture classification Level 1 requiring no dry pack storage

Single Zener Diodes Applications

• Voltage regulation in power supply circuits
• Reference voltage generation in electronic systems
• Overvoltage protection applications

Single Zener Diodes Procurement Notes

Verify the component origin as the datasheet originates from Microsemi Scottsdale Division, which is part of Microchip Technology. Confirm that the 'e3' suffix indicates RoHS compliance and the 'TR12' suffix denotes tape and reel packaging per EIA-296 standards. Ensure the specific B suffix tolerance aligns with design requirements before procurement.

Single Zener Diodes Selection Notes

Select this component for applications requiring 5-watt power dissipation and precise 7.5 V regulation. Consider the thermal resistance of 25°C/W junction-to-lead when designing heat sinking solutions. Verify that the ±5% tolerance meets circuit accuracy needs and that the T-18 package dimensions fit the available PCB space.

Single Zener Diodes Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. These devices are designed for high DC currents with adequate heat sinking and feature void-free transfer molded thermosetting epoxy bodies meeting UL94V-0 flammability ratings.

Single Zener Diodes Replacement Considerations

Surface mount equivalents such as SMBJ5343 or SMBG5343 are available within the same product family.