1N4743A B0G

Overview

The 1N4743A B0G 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 power dissipation of 1 W and operates within a temperature range from -65 °C to +200 °C. Key electrical parameters include a maximum reverse leakage current of 5 uA, a Zener impedance of 10 Ohms, and a test current of 19 mA. It utilizes a DO-41-2 through-hole package.

Feature Summary

• Provides stable voltage regulation at 13 V with 5% tolerance
• Features low thermal resistance plastic encapsulation
• Includes built-in strain relief for mechanical durability

Applications

• Voltage reference circuits
• Overvoltage protection
• Power supply regulation

Procurement Notes

Verify the specific suffix 'B0G' against official Taiwan Semiconductor documentation to confirm packaging details and compliance status. Ensure the component matches the required DO-41-2 form factor and thermal specifications for the intended application environment.

Selection Notes

Select this component when a 13 V regulation point is required in through-hole designs. Consider the 1 W power rating and operating temperature limits relative to circuit heat dissipation requirements. Verify compatibility with existing PCB footprints designed for the DO-41-2 package style.

Part Context

This part belongs to the standard 1N47xx series of 1 Watt Zener diodes. These components are widely used for general-purpose voltage regulation and protection tasks. The 1N4743A variant specifically targets the 13 V segment of this extensive product line.

Replacement Considerations

Cross-reference with other manufacturers offering the 1N4743A specification. Confirm that substitute parts meet the same 13 V nominal voltage, 1 W power rating, and DO-41 package dimensions.