1N4739A_R2_00001

Overview

The 1N4739A_R2_00001 is a silicon Zener diode from the 1N4728A series manufactured by Panjit International Inc. It features a nominal Zener voltage of 9.1 V with a tolerance range of 8.65 V to 9.56 V at a test current of 28 mA. The device has a maximum power dissipation of 1 Watt and operates within a junction temperature range of -55°C to +175°C. Electrical characteristics include a maximum Zener impedance of 5 Ω and a maximum leakage current of 0.5 µA at 7 V. The component utilizes a DO-41 molded plastic case with axial leads.

Feature Summary

• Low inductance design suitable for standard circuit applications
• High temperature soldering capability up to 260°C for 10 seconds
• Plastic package rated UL 94V-O for flammability classification
• Lead-free construction compliant with EU RoHS 2.0 standards

Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Procurement Notes

Verify the specific ordering suffix R2_00001 against official Panjit documentation to confirm packing configuration, as generic part numbers may vary in reel or box quantities. Ensure compliance requirements such as RoHS 2.0 are explicitly stated for the specific batch. Confirm lead availability and production cycles directly with the manufacturer or authorized distributors prior to order placement.

Selection Notes

Select this component when a stable 9.1 V reference is required with a 1 W power rating. The DO-41 through-hole package facilitates manual assembly and standard PCB mounting. Verify that the operating environment stays within the specified thermal limits and that the low leakage current meets the precision requirements of the target application.

Part Context

This part belongs to the 1N4728A series of 1 Watt Zener diodes produced by Panjit International Inc. The series covers a wide voltage range from 3.3 V to 68 V. The 1N4739A variant specifically targets the 9.1 V segment, offering consistent performance across the family's standardized DO-41 mechanical footprint and electrical testing parameters.

Replacement Considerations

Cross-reference with other manufacturers' 1N4739A specifications to ensure pinout compatibility and electrical parameter alignment. Verify that alternative sources meet the same 1 W power dissipation and DO-41 package dimensions.