1N4743DRL

Overview

The onsemi 1N4743DRL is a single general-purpose Zener diode with a nominal voltage of 13 V and a maximum power dissipation of 1 W. It utilizes the DO-41 through-hole package, featuring two pins for mounting. The device operates within a temperature range of -65°C to 200°C. Key electrical parameters include a test current of 19 mA, a maximum Zener impedance of 10 Ω, and a voltage tolerance of ±5%. Maximum reverse leakage current is specified at 5 μA.

Feature Summary

• Provides stable voltage regulation via Zener breakdown characteristics
• Designed for through-hole mounting in standard PCB layouts
• Capable of handling high thermal loads up to 200°C

Applications

• Voltage reference circuits
• Overvoltage protection stages
• General-purpose rectification and clamping

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheets. Confirm RoHS compliance status as specific suffixes may indicate non-compliant variants. Ensure the DO-41 package dimensions match your board layout requirements before finalizing procurement orders.

Selection Notes

Select this component when a 13 V reference point is required in through-hole designs. Consider the 1 W power rating for thermal management needs. Verify that the ±5% tolerance meets circuit precision requirements compared to tighter tolerance alternatives.

Part Context

This part belongs to the 1N47 series of silicon Zener diodes manufactured by onsemi. The series offers various voltage options in the DO-41 package, providing a standardized solution for discrete voltage regulation applications across industrial and consumer electronics sectors.

Replacement Considerations

Compatible substitutes include 1N4743A from other manufacturers offering identical 13 V specifications. Verify pinout compatibility and thermal resistance values when cross-referencing alternative sources.