1N4372A

Single Zener Diodes Overview

The Microchip Technology 1N4372A is a silicon unidirectional Zener diode housed in a DO-7 (DO-35) axial leaded package. It features a nominal Zener voltage of 3V with a tolerance of ±5% and a maximum power dissipation of 0.4W. The device operates within a temperature range of -65°C to +175°C and exhibits a maximum Zener impedance of 29 Ohms at the test current. Reverse leakage current is specified at 30 µA when tested at 1V reverse voltage.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using silicon Zener breakdown characteristics
• Constructed with glass axial-leaded DO-35 encapsulation for through-hole mounting
• Capable of operation across an extended industrial temperature range

Single Zener Diodes Applications

• Voltage reference circuits requiring low voltage stability
• Overvoltage protection stages in signal paths
• Clamping applications in analog signal conditioning

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix, such as -1 or e3, to confirm compliance with MIL-PRF-19500/127 military standards or RoHS directives. Confirm the manufacturer source, as production may originate from Microsemi or Microchip Technology entities depending on the supply chain history. Ensure the package type matches the required PCB footprint.

Single Zener Diodes Selection Notes

Select this component for designs requiring a precise 3V reference point with moderate power handling capabilities. The DO-35 package is suitable for standard through-hole assembly processes. Consider the 29 Ohm impedance value for dynamic load variations and ensure the thermal environment supports the 0.4W dissipation rating without exceeding the 175°C junction limit.

Single Zener Diodes Part Context

This part belongs to the 1N4370A through 1N4372A series of 0.5W Zener diodes. These components are widely used in general-purpose voltage regulation tasks. The series offers various tolerance options and packaging configurations, including surface mount variants like the 1N4372AUR-1, to accommodate different design constraints.

Single Zener Diodes Replacement Considerations

The JAN1N4372A-1 serves as a qualified military-grade substitute within the same electrical specification envelope. Surface mount equivalents include the 1N4372AUR-1 for designs requiring compact footprints.