1N4743AHR1G

Overview

The 1N4743AHR1G is a single Zener diode manufactured by Taiwan Semiconductor Corporation, designed for through-hole mounting in DO-204AL (DO-41) packages. It features a nominal Zener voltage of 13 V with a tolerance of ±5% and a maximum power dissipation of 1 W. The device operates within a temperature range of -55°C to +150°C and meets AEC-Q101 automotive qualification standards. Key electrical parameters include a test current of 19 mA, a maximum reverse leakage current of 5 µA, and a Zener impedance of 10 Ohms.

Feature Summary

• Automotive-grade reliability certified under the AEC-Q101 standard for robust performance in demanding environments.
• Single diode configuration housed in a standard DO-204AL through-hole package for easy integration into printed circuit boards.
• Stable voltage regulation capability at a nominal 13 V output with tight manufacturing tolerances.

Applications

• Voltage reference circuits in automotive electronic control units
• Overvoltage protection stages in vehicle power distribution systems
• Clamping applications in automotive sensor interfaces

Procurement Notes

Verify the specific suffix HR1G against official Taiwan Semiconductor documentation to confirm packaging type and automotive qualification status. Ensure the procurement channel provides traceability to the original manufacturer. Cross-reference the part number with the latest datasheet to confirm compliance with RoHS and REACH directives before finalizing orders.

Selection Notes

Select this component when an automotive-qualified Zener diode is required for 13 V regulation or protection tasks. The DO-41 package suits through-hole assembly processes. Verify that the 1 W power rating and 150°C junction temperature limit align with the thermal design of the target application circuit.

Part Context

This part belongs to the 1N4743AH series of Zener diodes produced by Taiwan Semiconductor. It shares the fundamental electrical characteristics of the standard 1N4743A but includes additional automotive certification. The series is widely used in general-purpose rectification and voltage regulation roles across industrial and consumer electronics sectors.

Replacement Considerations

The 1N4743A from onsemi offers identical electrical specifications but lacks the explicit AEC-Q101 automotive qualification listed for the Taiwan Semiconductor variant. Other manufacturers producing 1N4743A parts may match the voltage and power ratings but require verification of package dimensions and thermal characteristics for direct substitution.