1N4742A_S00Z

Overview

The onsemi 1N4742A_S00Z is a silicon unidirectional voltage regulator diode designed for through-hole mounting in the DO-41 package. It provides a nominal Zener voltage of 12 V with a tolerance of 5%. The device supports a maximum power dissipation of 1 W and operates within a temperature range from -65 °C to +200 °C. Key electrical characteristics include a maximum reverse leakage current of 5 uA, a Zener impedance of 9 Ohms, and a test current of 21 mA.

Feature Summary

• Hermetically sealed glass body construction for environmental protection
• Compression bonded internal structure for high reliability
• Flexible axial-lead terminals suitable for standard PCB mounting

Applications

• Voltage stabilization circuits
• Voltage regulation over broad operating currents
• Temperature-compensated reference applications

Procurement Notes

Verify the specific suffix _S00Z against official datasheets to confirm packaging details such as bulk or reel configuration. Ensure compatibility with RoHS and REACH requirements if applicable to your region. Confirm that the manufacturer designation matches onsemi specifications for quality assurance.

Selection Notes

Select this component when a stable 12 V reference is required in through-hole designs. Consider the 1 W power rating and thermal management needs for continuous operation. Verify that the 5% voltage tolerance meets circuit precision requirements compared to tighter tolerance alternatives.

Part Context

This part belongs to the 1N47xx series of 1 Watt Silicon Zener Diodes. These components are widely used in general-purpose electronics for basic voltage regulation tasks. The DO-41 package is a standard axial leaded form factor compatible with legacy and modern manufacturing processes.

Replacement Considerations

Compatible substitutes include 1N4742A from other manufacturers such as Microsemi, Taiwan Semiconductor, and Formosa MS. Ensure replacement parts match the 12 V Zener voltage, 1 W power rating, and DO-41 package dimensions.