1N5343B/TR12

Single Zener Diodes Overview

The Microchip Technology 1N5343B/TR12 is a silicon 5.0-watt Zener diode in the JEDEC registered 1N5333-5388B series, featuring a nominal voltage of 7.5 V with ±5% tolerance. It utilizes an axial T-18 package and operates within a temperature range of -65°C to +150°C. The device exhibits a maximum dynamic impedance of 1.5 ohms and a reverse leakage current of 10 µA at 5.4 V. Designed for high surge stress withstand, it includes RoHS compliant (e3) lead plating and requires no dry pack storage.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across broad operating currents and temperatures
• Withstands high surge stresses with flexible axial-lead mounting terminals
• Features void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards

Single Zener Diodes Applications

• Voltage regulation circuits requiring 5W power dissipation
• High surge stress environments
• Axial-lead through-hole mounting applications

Single Zener Diodes Procurement Notes

Verify the component matches the specific 1N5343B designation within the 1N5333-5388B series. Confirm the presence of the TR suffix indicates tape and reel packaging per EIA-296 standards. Ensure the e3 suffix is present for RoHS compliance if required by assembly specifications. Cross-reference datasheet electrical characteristics against design requirements.

Single Zener Diodes Selection Notes

Select this component for applications demanding 5-watt power handling and precise 7.5-volt regulation. The T-18 axial package facilitates standard through-hole mounting. Consider thermal resistance values when designing heat sinking solutions. Verify that the ±5% tolerance aligns with circuit precision needs compared to tighter tolerance alternatives.

Single Zener Diodes Part Context

This part belongs to the Microsemi Scottsdale Division 1N5333B through 1N5388B series of silicon Zener diodes. The series offers a wide voltage selection from 3.3 to 200 volts. These devices are characterized by low thermal resistance and robust construction suitable for demanding industrial and commercial electronic environments.

Single Zener Diodes Replacement Considerations

Equivalent parts include other manufacturers' 1N5343B variants or 1N5343 equivalents. Surface mount alternatives such as SMBJ5343B or SMBG5343B may be considered if footprint changes are acceptable.