1N4747A_R2_00001

Overview

The Panjit International Inc. 1N4747A_R2_00001 is a silicon Zener diode belonging to the 1N4728A series, designed for voltage regulation applications. It features a nominal Zener voltage of 20 V with a maximum impedance of 22 Ω at a test current of 12.5 mA. The device operates within a power dissipation range up to 1 W and supports high-temperature soldering at 260°C for 10 seconds. Packaged in a molded plastic DO-41 case with axial leads, it ensures compliance with EU RoHS 2.0 standards and UL 94V-O flammability classification.

Feature Summary

• Utilizes a low-inductance design suitable for standard voltage regulation circuits
• Constructed with a UL 94V-O rated flame-retardant epoxy plastic package
• Features axial leads that are solderable per MIL-STD-750 Method 2026

Applications

• General-purpose voltage regulation
• Reference voltage sources
• Overvoltage protection circuits

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packing type, as the R2 designation corresponds to reel packaging. Confirm RoHS 2.0 compliance status directly with the supplier. Ensure the component meets the required thermal resistance and lead length specifications for your specific mounting configuration before finalizing procurement.

Selection Notes

Select this component when a 20 V reference point is required in through-hole designs. Consider the 22 Ω impedance value for dynamic load requirements. Evaluate the 1 W power rating against ambient temperature conditions using the derating curve. Verify that the DO-41 package dimensions fit the available PCB space and that the axial lead spacing matches the board layout.

Part Context

This part belongs to the 1N4728A series, which covers a wide range of Zener voltages from 3.3 V to 68 V. All devices in this series share identical mechanical characteristics, including the DO-41 package and 1 W power rating. The series provides standardized voltage options for common electronic design needs while maintaining consistent physical form factors across different voltage ratings.

Replacement Considerations

Cross-reference with other manufacturers' 1N4747A equivalents. Verify that substitute parts match the 20 V nominal voltage, 22 Ω maximum impedance, and 1 W power dissipation limits. Ensure replacement components utilize the same DO-41 package and meet the required electrical tolerances.