1N5373B

Overview

The Diotec Semiconductor 1N5373B is a non-planar silicon Zener diode designed for voltage stabilization and regulation. It features a nominal Zener voltage of 68 V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 5 W at an ambient temperature of 50°C, utilizing DO-201 axial through-hole packaging. Key electrical characteristics include a test current of 20 mA, a dynamic resistance of 44 Ohms, and a reverse leakage current of 500 nA at 51.7 V. It operates within a junction temperature range of -50°C to +150°C.

Feature Summary

• High power dissipation capability up to 5 W
• Non-planar technology for robust performance
• Compliant with RoHS directives (exempt 7a-I)
• Standard E24 graded voltage tolerance

Applications

• Voltage stabilization circuits
• Voltage regulators
• Overvoltage protection

Procurement Notes

Verify the specific manufacturer part number against official Diotec Semiconductor documentation to ensure authenticity. Confirm that the component meets the required RoHS compliance standards and matches the specified DO-201 package dimensions. Ensure the procurement source provides valid traceability data consistent with commercial/industrial grade specifications.

Selection Notes

Select this component when a 68 V reference or regulation point is required in high-power applications. Consider the 5 W power rating and thermal resistance values for adequate heat dissipation design. Verify that the ±5% voltage tolerance aligns with circuit precision requirements and that the through-hole mounting style fits the target PCB layout constraints.

Part Context

This component belongs to the 1N5345B through 1N5388B series of Zener diodes manufactured by Diotec Semiconductor. The series utilizes non-planar technology and offers a wide voltage range from 8.7 V to 200 V. These devices are classified as commercial or industrial grade components intended for standard reliability applications.

Replacement Considerations

Cross-reference with other manufacturers offering equivalent 68 V, 5 W Zener diodes in the DO-201 package. Verify that any substitute maintains identical pinout configuration, power dissipation ratings, and thermal characteristics to ensure functional compatibility.