1N5372B/TR12

Overview

The Microchip Technology 1N5372B/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, manufactured by Microsemi. It provides voltage regulation at a nominal Zener voltage of 62 V with a ±5% tolerance. 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 500 nA and a dynamic impedance of 42 Ohms.

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

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm RoHS compliance status and check for specific military screening prefixes if required. Ensure proper handling procedures are followed due to the through-hole packaging format. Review datasheet specifications for thermal derating requirements before implementation.

Selection Notes

Select this component when a 62 V regulation point is required with 5 W power dissipation capability. The B suffix indicates a standard 5% voltage tolerance suitable for general-purpose applications. Consider thermal management strategies given the junction-to-ambient resistance values specified in the datasheet for FR4 PCB mounting conditions.

Part Context

This part belongs to the 1N5333B through 1N5388B series of axial-leaded Zener diodes. The series covers voltages from 3.3 V to 200 V with various tolerance options identified by suffix letters. The TR12 suffix denotes tape and reel packaging, while the e3 suffix indicates RoHS compliance with matte tin plating on the terminals.

Replacement Considerations

Equivalent parts within the same series include 1N5372B without the trailing suffix for loose packaging. Surface mount equivalents such as SMBJ5372B or SMBG5372B are available for space-constrained designs. Verify that replacement devices match the required voltage tolerance and power dissipation ratings.