1N5311 BK TIN/LEAD

Overview

The Central Semiconductor Corp 1N5311 BK TIN/LEAD is a single Zener diode designed for through-hole mounting in the DO-41-2 package. It features a nominal Zener voltage of 51 V with a 5% tolerance, operating within a range of 48.45 V to 53.55 V. The device dissipates up to 5 W of power and maintains a low reverse leakage current of 5 µA at its test current of 9.8 mA. It exhibits a Zener impedance of 10 Ohms and supports a forward current of 1 A. The component operates reliably between -65°C and +200°C.

Feature Summary

• High power dissipation capability of 5 W for robust voltage regulation
• Wide thermal operating range extending to +200°C
• Low reverse leakage current ensuring minimal standby power loss
• Through-hole DO-41-2 package construction for secure mounting

Applications

• High-power voltage reference circuits
• Overvoltage protection in industrial equipment
• Power supply regulation stages

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm lead-free status and plating composition. Confirm RoHS compliance details directly with Central Semiconductor as regulatory status may vary by production batch. Ensure the DO-41-2 package dimensions match your PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when a 51 V regulation point is required with significant power handling capabilities. The DO-41-2 package accommodates higher thermal loads compared to smaller axial packages. Verify that the circuit design accounts for the 10 Ohm Zener impedance to maintain desired regulation accuracy under varying load conditions.

Part Context

This part belongs to the 1N53xx series of high-power Zener diodes manufactured by Central Semiconductor. The series utilizes the DO-41-2 axial leaded package to support 5 W power ratings. These components are distinct from lower-power variants like the 1N47xx or 1N52xx series which typically handle 1 W or less.

Replacement Considerations

Equivalent parts include the 1N5335B and BZX85C51. Verify pinout compatibility and ensure the replacement package matches the DO-41-2 form factor. Confirm that substitute components meet the same 5 W power dissipation and 51 V Zener voltage specifications.