1N4742A-TP

Overview

The MCC 1N4742A-TP is a silicon planar Zener diode with a nominal voltage of 12 V and a power dissipation rating of 1.0 W at 50°C ambient temperature. It features a DO-41G glass package, a maximum reverse leakage current of 5 µA at 9.1 V, and a dynamic impedance of 9 Ohms at the test current of 21 mA. The device operates within a temperature range of -65°C to +200°C.

Feature Summary

• Hermetic glass package construction for environmental stability
• Silicon planar technology for reliable voltage regulation
• Mechanical axial lead mounting in a standard DO-41G case

Applications

• DC power supply voltage stabilization
• Voltage reference circuits
• Overvoltage protection applications

Procurement Notes

Verify component authenticity by purchasing directly from Micro Commercial Components or authorized distributors. Counterfeit parts pose significant risks; ensure traceability and quality standards are met through official channels before integration into designs.

Selection Notes

Select this component for through-hole designs requiring a 12 V regulation point. Ensure thermal derating is applied above 100°C. Verify that the 5% tolerance aligns with circuit requirements and confirm compatibility with the DO-41G footprint.

Part Context

This part belongs to the 1N4728 through 1N4761 series of 1.0 Watt Zener diodes manufactured by Micro Commercial Components. The series covers a wide voltage range from 3.3 V to 75 V, providing standardized options for various voltage regulation needs across industrial electronics.

Replacement Considerations

Cross-reference with other manufacturers offering 1N4742 equivalents in the DO-41 package. Verify matching electrical parameters such as 12 V nominal voltage, 1 W power rating, and 5% tolerance to ensure functional interchangeability.