1N4742AP-TP

Overview

The 1N4742AP-TP is a silicon planar Zener diode manufactured by Micro Commercial Components (MCC). It provides a nominal Zener voltage of 12 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 1 W and features a maximum dynamic impedance of 9 Ohms. It utilizes a DO-41 axial through-hole package. The component operates within a junction temperature range of -65°C to +150°C. It complies with RoHS3 standards and carries an EAR99 export classification code.

Feature Summary

• Hermetic glass-sealed construction in the DO-41G package
• Silicon planar technology for high reliability
• Lead-free finish compliant with environmental directives

Applications

• Voltage stabilization circuits
• Reference voltage generation
• Surge protection applications

Procurement Notes

Verify the specific suffix 'P' against the manufacturer's current ordering information, as it may designate compliance status rather than altering electrical function. Confirm the active manufacturing status, as previous iterations like the 1N4742A-TP have been marked obsolete. Ensure the required packaging format matches available reel or cut tape options from authorized distributors.

Selection Notes

Select this component when a standard 12 V regulation point is required in through-hole designs. The DO-41 package suits general-purpose PCB mounting. Verify that the 1 W power rating accommodates the expected thermal load. Consider the ±5% tolerance if tighter voltage precision is necessary for the target application.

Part Context

This part belongs to the 1N47xx series of 1 Watt Zener diodes produced by MCC. The series covers a wide voltage range from 3.3 V to 75 V. The 'AP' suffix typically indicates lead-free and RoHS-compliant variants within the manufacturer's lineup, distinguishing them from older non-compliant versions.

Replacement Considerations

The 1N4742AP-TP serves as a direct replacement for the obsolete 1N4742A-TP. Cross-manufacturer equivalents include the Vishay 1N4742A and the Microchip 1N4742AG, provided they meet the same 12 V, 1 W, and DO-41 specifications.