1N4742A_R2_00001

Overview

The Panjit International Inc. 1N4742A_R2_00001 is a silicon Zener diode belonging to the 1N4728A series, designed for voltage regulation applications. It features a nominal Zener voltage of 12 V with a tolerance range of 11.4 V to 12.6 V at a test current of 21 mA. The device supports a maximum power dissipation of 1 W and operates within a junction temperature range of -55°C to +150°C. Electrical characteristics include a maximum Zener impedance of 9 Ω and a maximum reverse leakage current of 0.1 µA at 9.1 V. The component utilizes a molded plastic DO-41 case with axial leads.

Feature Summary

• Glass passivated junction construction ensures high stability and low inductance.
• Plastic package meets Underwriters Laboratory Flammability Classification 94V-O.
• Terminals are solderable per MIL-STD-750 Method 2026 standards.
• Compliant with EU RoHS 2.0 directives for lead-free manufacturing.

Applications

• Voltage stabilization circuits
• Absolute reference voltage generation
• General purpose rectification

Procurement Notes

Verify that the ordering suffix _R2_00001 corresponds to the specified tape and reel packing configuration (5K pcs / 13” paper Reel) as defined in the official datasheet. Confirm the manufacturer part number matches the 1N4728A series documentation to ensure correct electrical parameters and mechanical dimensions are received.

Selection Notes

Select this component when a 12 V unidirectional voltage regulator is required in a through-hole DO-41 package. Ensure the application circuit can handle the 1 W power dissipation limit and verify that the operating ambient temperature remains within the specified -55°C to +150°C range for reliable performance.

Part Context

This component is part of the 1N4728A Series manufactured by Panjit International Inc., covering nominal voltages from 3.3 V to 68 V. The series provides standard Zener diodes suitable for general-purpose electronic designs requiring stable voltage references or protection against transient overvoltages in low-power applications.

Replacement Considerations

Cross-reference with other manufacturers' 1N4742A parts to confirm identical pinout, voltage tolerance, and package dimensions before substitution.

FAQ

What is the maximum reverse leakage current for the 1N4742A?

The maximum reverse leakage current is 0.1 µA when measured at a reverse voltage of 9.1 V.

Does the 1N4742A support high-temperature soldering?

Yes, the terminals are rated for high-temperature soldering at 260°C for 10 seconds.