1N5373E3/TR13

Overview

The Microchip Technology 1N5373E3/TR13 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 68 volts with a standard tolerance of plus or minus 5 percent, indicated by the B suffix. The device operates within a temperature range of -65°C to +150°C and features a void-free transfer molded thermosetting epoxy body. Electrical characteristics include a maximum dynamic impedance of 44 ohms and a maximum reverse current of 0.5 microamperes.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and offers minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for versatile integration
• Constructed with a void-free transfer molded thermosetting epoxy body

Applications

• Voltage regulation circuits requiring 5-watt power dissipation
• Power supply protection against transient overvoltages
• Reference voltage generation in electronic systems

Procurement Notes

Verify that the ordering suffix TR13 corresponds to the tape and reel packaging option as specified in the datasheet mechanical section. Confirm the e3 suffix indicates RoHS compliance and annealed matte-tin plating. Ensure the B suffix is present to confirm the standard plus or minus 5 percent voltage tolerance. Cross-reference the part number with official manufacturer documentation to validate all electrical parameters before procurement.

Selection Notes

Select this component when a 68-volt Zener reference with 5-watt power handling is required. The axial lead configuration supports through-hole mounting on FR4 printed circuit boards. Consider the thermal resistance specifications for heat sinking requirements. Verify that the plus or minus 5 percent tolerance meets the circuit design constraints for voltage regulation accuracy.

Part Context

This component belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi, now part of Microchip Technology. The series covers a wide voltage selection from 3.3 to 200 volts. These devices are JEDEC registered and designed for applications requiring robust voltage regulation and high surge current withstand capabilities in axial packages.

Replacement Considerations

Surface mount equivalents such as SMBJ5373B or SMBG5373B are available within the same product family. Verify pin compatibility and thermal performance when transitioning between package types. Consult official substitution lists for military screening prefixes if environmental ruggedness is required.