1N4988

Single Zener Diodes Overview

The Microchip Technology 1N4988 is a military-qualified, voidless hermetically sealed 5-watt glass Zener diode. It provides a nominal voltage of 180 V with a standard tolerance of ±5%. The device operates at a test current of 5 mA and features a maximum reverse leakage current of 2 µA at the rated voltage. Electrical characteristics include a Zener impedance of 450 Ohms and a temperature coefficient of +0.110 %/°C. It supports an operating junction temperature range from -65°C to +175°C and utilizes an axial lead E-package construction.

Single Zener Diodes Feature Summary

• Military qualified to MIL-PRF-19500/356 for high-reliability applications
• Voidless hermetically sealed glass package with internal metallurgical bonds
• Inherently radiation hard and non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• High-reliability aerospace systems
• Military electronic circuits
• Harsh environment power regulation

Single Zener Diodes Procurement Notes

Verify that the component meets the specific military qualification standards required for your application. Confirm the package type and termination finish match your design specifications. Ensure compliance with all relevant environmental and trade regulations before finalizing procurement decisions.

Single Zener Diodes Selection Notes

Select this component when a robust, high-power Zener regulator is needed for critical systems. The wide operating temperature range and radiation hardness make it suitable for demanding environments. Verify that the 180 V breakdown voltage aligns with the circuit requirements.

Single Zener Diodes Part Context

This part belongs to the 1N4954 through 1N4996 series of 5-watt Zener diodes. These industry-recognized regulators are designed for applications where failure cannot be tolerated. The series offers extensive voltage selections with standard and tighter tolerances available via suffix codes.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in a square end-cap MELF configuration with the 'US' suffix (e.g., 1N4988US). Other variants such as JANTX or JANS may offer different quality levels within the same electrical specification.

Single Zener Diodes FAQ

Is the 1N4988 sensitive to electrostatic discharge?

No, the device is non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020.

What is the maximum continuous current rating?

The maximum continuous regulator current (IZM) is 26.4 mA.