1N4740A_R2_00001

Overview

The Panjit International Inc. 1N4740A_R2_00001 is a silicon Zener diode belonging to the 1N4728A series, designed for voltage regulation and reference applications. It features a nominal Zener voltage of 10 V with a tolerance range of 9.5 V to 10.5 V at a test current (IZT) of 25 mA. The device operates in a DO-41 axial molded plastic package rated for 1 Watt power dissipation. Key electrical characteristics include a maximum Zener impedance (ZZT) of 7 Ω and a maximum leakage current of 0.5 µA at 7.6 V reverse voltage. It supports high-temperature soldering at 260°C for 10 seconds and complies with EU RoHS 2.0 standards.

Feature Summary

• Provides stable voltage regulation within specified tolerance ranges for circuit protection and reference purposes
• Constructed with UL 94V-O flame retardant epoxy for enhanced safety and durability
• Capable of enduring high-temperature soldering processes without performance degradation

Applications

• Voltage regulation in low-power electronic circuits
• Reference voltage sources for analog signal processing
• Overvoltage protection for sensitive semiconductor components

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packing type and reel specifications. Ensure compliance with RoHS 2.0 requirements for your region. Confirm that the application does not involve life-saving or high-reliability equipment, as these products are not authorized for such uses. Cross-reference the part number with official datasheets to validate electrical parameters before procurement.

Selection Notes

Select this component when a precise 10 V reference is required in an axial through-hole configuration. Consider the 7 Ω dynamic impedance for applications demanding moderate regulation accuracy. Evaluate thermal derating curves if operating near the maximum ambient temperature limit. Ensure the circuit design accommodates the specified leakage current and power dissipation constraints under steady-state conditions.

Part Context

This part belongs to the 1N47xxA series of 1 Watt Zener diodes manufactured by Panjit International Inc. The series covers a wide voltage range from 3.3 V to 68 V, all sharing the same DO-41 mechanical footprint and general electrical testing conditions. The 1N4740A specifically targets the 10 V segment of this lineup, offering standardized performance for common industrial and consumer electronics designs.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4740A equivalents meeting the same 10 V nominal voltage, 1 W power rating, and DO-41 package dimensions. Verify that replacement parts match the 7 Ω maximum Zener impedance and 0.5 µA leakage current specifications to ensure circuit compatibility.