1N5372B

Overview

The Microsemi Corporation 1N5372B is a silicon axial-leaded Zener diode with a nominal voltage of 62 V and a power dissipation rating of 5.0 watts at 25°C. It features a ±5% tolerance, indicated by the 'B' suffix. The device operates within a temperature range of -65°C to +150°C. Electrical characteristics include a maximum dynamic impedance of 42 ohms and a maximum reverse current of 0.5 µA. The package is a void-free transfer molded thermosetting epoxy body in a T-18 configuration.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for through-hole integration
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack

Applications

• Voltage regulation circuits requiring 62 V reference
• Overvoltage protection for industrial equipment inputs
• Power supply output stabilization

Procurement Notes

Verify the specific manufacturer origin, as the 1N5372B designation is JEDEC registered and produced by multiple vendors including onsemi and Microsemi. Confirm RoHS compliance status if required, noting that standard versions may not be compliant while e3 suffixes are. Ensure the supplier provides official datasheets matching the requested manufacturer's electrical parameters before finalizing procurement.

Selection Notes

Select this component when a 62 V Zener voltage with 5 W power handling is required. The B suffix ensures a tight ±5% tolerance suitable for precision applications. Consider thermal management requirements, as steady-state power dissipation drops significantly when mounted on FR4 PCBs compared to direct lead heating. Verify compatibility with existing circuit impedance and surge current limits.

Part Context

This part belongs to the 1N5333B through 1N5388B series of 5-watt silicon Zener diodes. The series covers a wide voltage range from 3.3 V to 200 V. The 1N5372B specifically targets the mid-to-high voltage segment of this lineup, offering robust performance in plastic encapsulated axial packages designed for high reliability and heat sinking capabilities.

Replacement Considerations

Equivalent parts include the Microsemi MX1N5372B (military screened) or MQ1N5372B (JAN screened). Other manufacturers produce JEDEC registered equivalents under the same 1N5372B number; verify pinout and tolerance match.