1N5343/TR12

Single Zener Diodes Overview

The Microchip Technology 1N5343/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333B through 1N5388B series. It provides voltage regulation with a nominal Zener voltage of 7.5 V and 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 reverse current of 10 µA at 5.4 V, a dynamic impedance of 1.5 Ω, 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 offers flexible axial-lead mounting terminals
• Features minimal changes in voltage versus current as specified by voltage regulation

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify the component origin carefully, as the datasheet identifies Microsemi as the manufacturer while the model number includes a Microchip Technology suffix. Confirm that the specific ordering suffix corresponds to the tape and reel packaging option described in the mechanical data. Ensure compatibility with RoHS compliance requirements if applicable to your assembly process.

Single Zener Diodes Selection Notes

Select this component when a 5-watt power dissipation rating is required for high-current regulation tasks. The 7.5 V nominal voltage makes it suitable for specific reference needs within the 3.3 V to 200 V selection range. Consider the thermal resistance specifications and heat sinking requirements to maintain operation within the maximum junction temperature limits.

Single Zener Diodes Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon Zener diodes originally manufactured by Microsemi. The series is characterized by its 5.0-watt power handling capability and wide voltage selection. These devices are designed for robust performance in demanding environments, offering various tolerance options and screening levels.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include other 1N53xxB variants with different voltage ratings. Cross-manufacturer equivalents may exist but require verification of electrical parameters such as dynamic impedance and power derating curves.