1N4743A R1G

Overview

The 1N4743A R1G 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 from -55 °C to +150 °C. Key electrical characteristics include a maximum reverse leakage current of 5 uA, a Zener impedance of 10 Ohms, and a test current of 19 mA. It is housed in the DO-41-2 through-hole package and holds AEC-Q101 qualification.

Feature Summary

• Provides stable voltage regulation at a nominal 13 V level
• Qualified for automotive applications under AEC-Q101 standards
• Features low reverse leakage current for efficient operation
• Designed for high thermal stability up to 150 °C

Applications

• Voltage regulation in automotive electronic circuits
• Protection against voltage spikes in sensitive components
• Reference voltage sources in measurement equipment

Procurement Notes

Verify the specific suffix 'R1G' against official Taiwan Semiconductor documentation to confirm packaging details and exact manufacturing lot specifications. Ensure that the AEC-Q101 qualification status aligns with your project's automotive reliability requirements before finalizing procurement decisions.

Selection Notes

Select this component when a 13 V regulation point is required in space-constrained through-hole designs. The DO-41-2 package offers a compact footprint suitable for standard PCB layouts. Consider the 1 W power rating and 150 °C junction temperature limit to ensure adequate thermal management in the target application environment.

Part Context

This part belongs to the 1N4743AH series of 1-watt Zener diodes produced by Taiwan Semiconductor. The series covers a wide range of voltage values, with the 1N4743 variant specifically targeting the 13 V market segment. The inclusion of the 'R1G' suffix typically denotes specific tape-and-reel or ammo pack packaging configurations distinct from bulk options.

Replacement Considerations

Cross-reference with other manufacturers offering the 1N4743A specification in the DO-41 package. Verify that substitute parts meet the same 13 V nominal voltage, 5% tolerance, and 1 W power dissipation ratings to maintain circuit performance integrity.