1N4678-TP

Overview

The MMSZ4678-TP is a 500mW silicon Zener diode manufactured by Micro Commercial Components (MCC). It features a nominal Zener voltage of 1.8V with a standard tolerance of ±5%. The device operates within a junction temperature range of -65°C to +200°C and has a maximum forward voltage of 1.5V at 100mA. It utilizes a DO-35 axial leaded package.

Feature Summary

• Hermetically sealed glass construction with double slug type case
• Very sharp reverse characteristic for precise regulation
• Lead-free finish compliant with RoHS directives

Applications

• Voltage regulation in electronic circuits
• Protection against overvoltage conditions
• Reference voltage generation

Procurement Notes

Verify the authenticity of the component through authorized MCC distributors or direct purchase from the manufacturer. Ensure the ordering suffix matches the required packaging format, such as tape and reel or bulk, as specified in the datasheet. Confirm compliance with environmental standards like RoHS if applicable to your design requirements.

Selection Notes

Select this component when a low voltage reference around 1.8V is needed with high reliability. Consider the thermal resistance and power dissipation limits for your specific application environment. Verify that the axial leaded package fits your board layout constraints compared to surface mount alternatives.

Part Context

This part belongs to the 1N4678 through 1N4717 series of 500mW silicon Zener diodes. The series offers a wide range of voltages from 1.8V to 43V. These components are designed for general-purpose voltage regulation applications requiring stable performance across varying temperatures.

Replacement Considerations

Direct replacements include other manufacturers' equivalents in the 1N4678 series with identical electrical specifications and DO-35 packaging. Ensure any substitute maintains the same hermetic sealing and voltage tolerance characteristics.