1N4744A_S00Z

Overview

The onsemi 1N4744A_S00Z is a silicon planar Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 15 V with a tolerance of ±5%. The device is rated for a steady-state power dissipation of 1 W and operates within a temperature range of -65 °C to +175 °C. Key electrical characteristics include a maximum reverse leakage current of 5 µA, a Zener impedance of 14 Ω at a test current of 17 mA, and a forward voltage drop of 1.2 V at 200 mA. The component utilizes a DO-41 axial leaded package.

Feature Summary

• Utilizes double slug type construction for robust performance
• Features oxide passivated die for enhanced reliability
• Provides hermetically sealed glass encapsulation

Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Procurement Notes

Verify the manufacturer designation carefully, as the base part number 1N4744A is widely produced by multiple vendors including Microchip, Vishay, and Panasonic. Confirm that the specific suffix _S00Z corresponds to onsemi's internal packaging or lot coding requirements. Ensure the procurement documentation explicitly states onsemi as the source to avoid receiving equivalent parts from other manufacturers with potentially different screening levels or material compositions.

Selection Notes

Select this component when a standard 15 V regulation point is required in through-hole designs. The 1 W power rating allows for moderate current handling compared to lower-power variants. Consider the thermal resistance and ambient operating conditions to ensure the junction temperature remains within the specified limits during continuous operation. Verify compatibility with existing PCB footprints for the DO-41 package.

Part Context

This component belongs to the JEDEC registered 1N47xxA series of 1 Watt Zener diodes. These devices are standardized across the industry for general-purpose voltage regulation. The specific variant maintains the core electrical specifications of the series while adhering to onsemi's manufacturing processes and quality standards for the designated package style.

Replacement Considerations

Direct replacements include the 1N4744A from other manufacturers such as Microchip Technology, Vishay, or Panasonic, provided they meet the same 15 V, 1 W, and DO-41 package specifications. Ensure any substitute matches the 5% voltage tolerance and thermal ratings.