1N4741A BK PBFREE

Overview

The Central Semiconductor Corp 1N4741A BK PBFREE is a silicon Zener diode designed for voltage regulation and reference applications. It features a nominal Zener voltage of 11 V with a tolerance of 5 percent, housed in the DO-41 axial leaded package. The component supports a maximum power dissipation of 1 W and operates within a temperature range from -65 °C to +175 °C junction temperature. Key electrical characteristics include a maximum reverse leakage current of 5 uA at the rated voltage and a test current of 17 mA. The device is RoHS compliant and manufactured without halogens.

Feature Summary

• Provides stable voltage regulation utilizing high-reliability silicon technology
• Engineered for low leakage current performance under reverse bias conditions
• Constructed with an isolated case connection for flexible mounting options

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation tasks in power supplies

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm compliance status and packaging details. Ensure that the procurement channel provides valid traceability records for the component batch. Confirm that the received parts match the specified DO-41 package dimensions and electrical ratings before integration into the design.

Selection Notes

Select this component when a 11 V regulation point is required with a 1 W power handling capability. Consider the DO-41 through-hole package for standard PCB layouts. Evaluate the thermal environment to ensure operation remains within the specified -65 °C to +175 °C junction temperature range during continuous duty cycles.

Part Context

This part belongs to the 1N47 series of Zener diodes produced by Central Semiconductor. The series covers a wide voltage range from 3.3 V to 200 V, offering consistent reliability and low leakage characteristics across all variants. The 1N4741A specifically addresses the lower end of this spectrum, providing a stable reference point for sensitive analog and digital circuitry.

Replacement Considerations

Cross-reference with other manufacturers' 1N4741A equivalents to verify pinout compatibility and thermal resistance values. Ensure that any substitute component meets or exceeds the 1 W power dissipation rating and maintains the same DO-41 mechanical footprint for direct replacement.