1N4749A_R2_00001

Overview

The Panjit International Inc. 1N4749A_R2_00001 is a silicon glass-passivated Zener diode belonging to the 1N4728A series, rated for 1 Watt of power dissipation. It features a nominal Zener voltage of 24 V with a tolerance range of 22.8 V to 25.2 V. The device utilizes an axial DO-41 molded plastic package and operates within a temperature range of -55°C to +150°C. Key electrical characteristics include a maximum Zener impedance of 25 Ω at a test current of 10.5 mA and a maximum leakage current of 18.2 μA at 18.2 V.

Feature Summary

• Glass passivation provides stable voltage regulation and environmental protection
• Molded plastic case meets UL 94V-O flammability classification standards
• Axial leads are solderable per MIL-STD-750 Method 2026 specifications

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in low-power electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify that the ordering suffix matches the required packing type, such as bulk boxes or paper reels, as specified by Panjit. Confirm RoHS 2.0 compliance status during procurement. Ensure the component lot number is recorded for tracking purposes, as Panjit uses lot numbers for identification. Check datasheet revisions before finalizing orders to ensure alignment with current manufacturing specifications.

Selection Notes

Select this component when a 24 V unidirectional voltage regulator is needed in a DO-41 package. Verify that the circuit design accommodates the 1 W power rating and the specified thermal derating curve. Ensure the operating environment stays within the -55°C to +150°C junction temperature limits. Consider the 25 Ω impedance value for dynamic load requirements.

Part Context

This part belongs to the 1N4728A series of 1 Watt Zener diodes manufactured by Panjit International Inc. The series covers nominal voltages from 3.3 V to 68 V. All devices share the same DO-41 axial leaded package and glass passivation technology. The series is designed for general-purpose voltage regulation and clamping applications in standard industrial electronics.

Replacement Considerations

Cross-reference with other manufacturers' 1N4749A equivalents. Verify pinout compatibility and package dimensions match the DO-41 standard. Ensure replacement parts meet the same 1 W power rating and 24 V nominal voltage specifications.