1N4705-TP

Overview

The MCC 1N4705-TP is a silicon epitaxial planar Zener diode housed in a DO-35 glass package. It provides a nominal Zener voltage of 18V with a standard tolerance of ±5%. The device supports a maximum steady-state power dissipation of 500mW at lead temperatures below 75°C and operates within a junction temperature range up to 200°C. Electrical characteristics include a maximum forward voltage of 1.5V at 100mA and a reverse leakage current of 50µA.

Feature Summary

• Features a double slug type, hermetically sealed glass case for high reliability.
• Provides very sharp reverse characteristic for precise voltage regulation.
• Standard Zener voltage tolerance is maintained at ±5%.

Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Procurement Notes

Verify the specific suffix (e.g., -TP) against the manufacturer's ordering information to confirm packaging format. Confirm RoHS compliance status and check for any lifecycle notices such as End-of-Life or Not Recommended for New Designs before finalizing procurement plans.

Selection Notes

Select this component when a 500mW surface-mount equivalent or through-hole Zener regulator is required. Ensure the operating environment stays within the specified thermal limits and that the 18V breakdown voltage aligns with the circuit design requirements.

Part Context

This part belongs to the 1N4678 through 1N4717 series of 500mW Silicon Zener Diodes manufactured by Micro Commercial Components. The series covers a wide voltage range from 1.8V to 43V, utilizing a standardized DO-35 package construction common in general-purpose electronic applications.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4705 variants meeting the same JEDEC specifications. Verify pinout compatibility and thermal resistance parameters when substituting.

FAQ

What is the maximum junction temperature for the 1N4705-TP?

The maximum junction temperature is 200°C.

Does the 1N4705-TP have a tight voltage tolerance option?

The standard tolerance is ±5%. Tighter tolerances such as 2% are available with specific ordering suffixes like 'C'.