1N4960US

Overview

The Microchip Technology 1N4960US is a surface mount Zener voltage regulator with a nominal breakdown voltage of 12 V. It features a 5 W power dissipation rating and operates within a temperature range of -65°C to +175°C. The device utilizes a D-5B (SQ-MELF) package with end cap terminations. Electrical characteristics include a maximum reverse leakage current of 10 µA at 9.1 V, a dynamic impedance of 2.5 Ohms at the test current of 100 mA, and a forward voltage of 1.5 V at 1 A.

Feature Summary

• Hermetically sealed voidless-glass construction with internal metallurgical bonds for high reliability
• Military qualified to MIL-PRF-19500/356 standards
• Robust design inherently resistant to electrostatic discharge

Applications

• High-reliability voltage regulation circuits
• Military and aerospace electronic systems
• Critical protection applications where failure is not tolerated

Procurement Notes

Verify that the component matches the specific military qualification requirements of your system. Confirm the package type corresponds to the surface mount D-5B outline. Ensure the supplier provides documentation verifying the hermetic seal and material composition. Check for any specific handling instructions related to the glass construction.

Selection Notes

Select this component when a robust, surface-mountable Zener diode is required for harsh environments. The wide operating temperature range supports extreme thermal conditions. Consider the 5 W power rating for high-energy dissipation needs. Verify that the 12 V breakdown aligns with the circuit's reference or regulation requirements.

Part Context

This part belongs to the 1N4954US through 1N4996US series of surface mount Zener regulators. These devices are designed as industry-standard replacements for axial-leaded versions while offering superior mounting stability. The series covers a broad voltage spectrum from 3.3 V to 390 V in standard 5% tolerances.

Replacement Considerations

Direct axial-leaded equivalents exist within the same family but require through-hole mounting. Other parts in the 1N49xxUS series offer different voltage ratings but share identical packaging and qualification standards.