1N4372A

Single Zener Diodes Overview

The onsemi 1N4372A is a silicon unidirectional Zener diode housed in a DO-35 glass axial-leaded package. It provides a nominal Zener voltage of 3.0 V with a tolerance of ±5%. The device operates at a test current of 20 mA and features a maximum dynamic impedance of 29 Ω. It supports a maximum power dissipation of 500 mW, with a derating factor of 4.0 mW/°C above 75°C. The component withstands an operating junction temperature range from -65°C to +200°C.

Single Zener Diodes Feature Summary

• Utilizes a hermetically sealed glass case for environmental protection
• Features double plug construction for enhanced reliability
• Includes internal metallurgical bonding option

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the manufacturer origin, as Fairchild Semiconductor was acquired by onsemi. Confirm compliance with MIL-PRF-19500/127 if military-grade specifications are required. Ensure the specific suffix matches the desired tolerance and packaging configuration. Check for RoHS status variations across production batches.

Single Zener Diodes Selection Notes

Select this component when a precise 3V reference is needed within a standard DO-35 footprint. Consider the thermal derating requirements for high-temperature environments. Evaluate the dynamic impedance characteristics against circuit sensitivity. Compare alternative series members like 1N4371A or 1N747A for different voltage levels.

Single Zener Diodes Part Context

This part belongs to the broader 1N4370A through 1N4372A and 1N746A through 1N759A series of 500 mW Zener diodes. These devices share common physical dimensions and electrical testing methodologies. The series covers a wide voltage range from 2.4V to 12V, offering standardized options for various regulator designs.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN1N4372A-1 and JANTXV1N4372A-1 for military specifications. Commercial equivalents may be found under the 1N746A designation.