1N4964CUS

Overview

The Microchip Technology 1N4964CUS is a single silicon Zener diode designed for surface mount applications. It features an 18 V nominal Zener voltage with a ±2% tolerance and operates at a test current of 65 mA. The device supports a maximum power dissipation of 5 W and exhibits a dynamic impedance of 9 Ohms. It functions within a temperature range of -65 °C to +175 °C, utilizing the D-5B-2 package.

Feature Summary

• Surface mount construction in a hermetically sealed glass D-5B-2 package
• High reliability design suitable for demanding environments
• Low leakage current characteristics for stable regulation

Applications

• Voltage regulation circuits
• Overvoltage protection systems
• Reference voltage generation

Procurement Notes

Verify the specific suffix CUS against official Microchip documentation to confirm the exact package style and tolerance class. Ensure that the required operating temperature range and power derating curves align with the system thermal design before finalizing procurement specifications.

Selection Notes

Select this component when a precise 18 V reference is required in a compact surface mount form factor. The 5 W power rating allows for significant current handling compared to standard small-signal diodes. Confirm that the 9 Ohm dynamic impedance meets the noise and stability requirements of the target application circuit.

Part Context

This part belongs to the 1N4964 series of high-reliability Zener diodes manufactured by Microchip Technology. The series includes various package options such as through-hole and surface mount variants. The 1N4964CUS specifically denotes the surface mount configuration with tight voltage tolerance specifications.

Replacement Considerations

Direct replacements include JAN1N4964US for through-hole equivalents or other 1N4964 series variants from Microchip. Verify pinout compatibility and thermal performance when substituting with components from different manufacturers.