1N4737A_R2_00001

Overview

The Panjit International Inc. 1N4737A_R2_00001 is a silicon unidirectional voltage regulator diode belonging to the 1N4728A series. It features a nominal Zener voltage of 7.5 V with a tolerance range of 7.13 V to 7.88 V at a test current (IZT) of 34 mA. The device has a maximum power dissipation of 1 Watt and operates within a temperature range of -55°C to +150°C. Electrical characteristics include a maximum Zener impedance (ZZK) of 700 Ω at IZK, a leakage current (IR) of 5 µA at VR = 5 V, and a forward voltage of 1.2 V max at IF = 200 mA. It utilizes a molded plastic DO-41 case with axial leads.

Feature Summary

• Utilizes double slug type construction for metallurgical bonding
• Features oxide passivated die technology
• Complies with UL 94V-O flammability classification

Applications

• Voltage regulation in electronic circuits
• Voltage reference applications
• Protection against overvoltage conditions

Procurement Notes

Verify the specific ordering suffix matches the required packing configuration, such as tape and reel or bulk box quantities. Confirm compliance requirements including RoHS 2.0 standards and lead-free specifications before finalizing procurement orders. Ensure the component lot number is recorded for tracking purposes during quality assurance processes.

Selection Notes

Select this component when a stable 7.5 V reference point is required within standard industrial operating temperatures. Consider the 700 Ω knee impedance for low-current regulation stability. Verify that the DO-41 package dimensions fit the available board space and that the thermal resistance characteristics align with the system's heat dissipation capabilities.

Part Context

This part belongs to the 1N4728A 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, providing standardized options for various circuit design needs. The 1N4737A variant specifically targets the 7.5 V segment of this lineup.

Replacement Considerations

Cross-reference with other manufacturers' 1N4737A equivalents ensuring identical DO-41 packaging and 1 W power rating. Verify matching electrical parameters, particularly the 7.5 V nominal voltage and 700 Ω maximum impedance, to maintain circuit performance integrity.