1N5373A/TR12

Overview

The Microchip Technology 1N5373A/TR12 is a silicon 5-watt Zener diode with a nominal voltage of 68 V and a ±10% tolerance. It operates within a temperature range of -65°C to +150°C, featuring a maximum reverse current of 0.5 µA and a dynamic impedance of 44 Ω at a test current of 20 mA. The component utilizes an axial-lead T-18 package and is supplied in tape and reel format.

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

Applications

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

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm tolerance and packaging details. Confirm RoHS compliance status and lead material specifications prior to procurement. Ensure thermal management requirements are met for the 5W dissipation rating during operation.

Selection Notes

Select this component for applications requiring robust 5W power handling and wide temperature stability. Consider the ±10% tolerance for general regulation tasks where tighter precision is not critical. Evaluate thermal resistance and heat sinking needs based on the intended mounting method and ambient conditions.

Part Context

This device belongs to the JEDEC registered 1N5333B through 1N5388B series of silicon Zener diodes. The series offers a voltage selection from 3.3V to 200V with various tolerance options. The 'A' suffix specifically denotes a ±10% voltage tolerance standard for this family.

Replacement Considerations

Compatible substitutes include other 68V 5W Zener diodes from the same manufacturer series, such as the 1N5373B (±5% tolerance) or 1N5373C (±2% tolerance), provided the tolerance difference is acceptable for the application.