1N4743AHB0G

Overview

The 1N4743AHB0G is a single silicon Zener diode manufactured by Taiwan Semiconductor Corporation. It provides a nominal Zener voltage of 13 V with a tolerance of 5%. The device is rated for a maximum power dissipation of 1 W and operates within a temperature range of -55 °C to +150 °C junction temperature. It features a low reverse leakage current of 5 µA and a Zener impedance of 10 Ohms at a test current of 19 mA. The component utilizes an axial DO-41 (DO-204AL) through-hole package and holds AEC-Q101 qualification for automotive applications.

Feature Summary

• AEC-Q101 qualified for automotive reliability standards
• Plastic encapsulated in an axial leaded package
• Low reverse leakage current characteristics
• High thermal stability up to 150 °C

Applications

• Voltage regulation in automotive electronic circuits
• Protection against voltage transients in vehicle systems
• Reference voltage sources in industrial control equipment

Procurement Notes

Verify the specific suffix 'HB0G' against the manufacturer's official datasheet to confirm exact packaging, tape-and-reel specifications, and RoHS compliance status. Ensure the ordering quantity aligns with the factory's minimum order requirements and standard reel sizes. Confirm that the AEC-Q101 qualification is active for this specific batch before finalizing procurement for automotive-grade designs.

Selection Notes

Select this component when a 13 V regulation point is required in space-constrained through-hole designs. The DO-41 package offers robust mechanical mounting compared to surface-mount alternatives. Consider the 1 W power rating and thermal resistance when designing heat dissipation strategies for high-duty-cycle applications. Verify compatibility with existing PCB footprints and automated assembly processes for axial leads.

Part Context

This part belongs to the 1N4743AH series of 1-watt Zener diodes from Taiwan Semiconductor. The series covers various voltage ratings within the JEDEC standard numbering system. The 'H' suffix typically denotes specific manufacturing lot or revision codes, while 'B0G' indicates environmental compliance and packaging details defined by the manufacturer.

Replacement Considerations

Cross-reference with other manufacturers offering the standard 1N4743A specification in DO-41 packages. Verify pinout compatibility and ensure equivalent electrical parameters such as Zener impedance and leakage current are met. Check for any differences in thermal resistance or maximum operating temperature limits.