1N4705/TR

Single Zener Diodes Overview

The Microchip Technology 1N4705/TR is a silicon epitaxial planar Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 18V with a standard tolerance of 5%. The device operates within a power dissipation rating of 500mW and supports a maximum reverse current of 200mA. It is housed in a DO-35 axial leaded package, suitable for through-hole mounting. The component maintains functionality across an extended temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Utilizes silicon epitaxial planar technology for stable voltage regulation
• Provides precise voltage control with standard 5% tolerance at 18V
• Features hermetically sealed glass construction for environmental protection

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source, as the 1N4705 designation is utilized by multiple semiconductor vendors including Microsemi and Central Semiconductor. Confirm that the actual datasheet aligns with the required electrical parameters, particularly the 500mW power rating and 18V Zener voltage, before finalizing procurement decisions.

Single Zener Diodes Selection Notes

Select this component when a robust, low-current Zener regulator is needed for general-purpose voltage stabilization. Ensure the circuit design accommodates the 500mW thermal dissipation limits and the specific operating temperature range requirements. Verify compatibility with the DO-35 through-hole footprint during PCB layout.

Single Zener Diodes Part Context

This part belongs to the broader family of 1N47xx series Zener diodes, which are widely used for basic voltage regulation tasks. The /TR suffix typically indicates tape and reel packaging for automated assembly processes. These components serve as fundamental building blocks in power supply designs and protection circuits.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N4705 equivalents such as those from Central Semiconductor or Vishay. Ensure replacement parts match the 18V Zener voltage, 500mW power rating, and DO-35 package dimensions to maintain circuit integrity.