1N4756A BK PBFREE

Overview

The Central Semiconductor Corp 1N4756A BK PBFREE is a silicon Zener diode designed for voltage regulation. It operates within the DO-41 axial leaded package and provides a nominal Zener voltage of 47 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1.0 W at an ambient temperature of 50°C. Electrical characteristics include a test current of 5.5 mA, a maximum reverse leakage current of 5 µA at 32.7 V, and a maximum DC current of 35.8 mA. The component functions reliably across a junction and storage temperature range from -65°C to +200°C.

Feature Summary

• Provides stable voltage regulation using silicon Zener technology
• Features hermetically sealed glass construction for environmental protection
• Supports high thermal stability with extended operating temperature limits

Applications

• Industrial equipment voltage regulation
• Commercial electronic circuit design
• Computer system power management
• Entertainment electronics applications

Procurement Notes

Verify the specific ordering suffix required for your manufacturing process. The 'BK' designation indicates bulk packaging, while 'PBFREE' confirms compliance with lead-free plating standards. Confirm that the DO-41 through-hole package aligns with your board layout requirements before finalizing procurement orders.

Selection Notes

Select this component when a precise 47 V reference is needed in high-power circuits. Ensure the application can accommodate the 1.0 W power dissipation rating and the specified thermal resistance. Verify that the ±5% voltage tolerance meets the precision requirements of the target design without requiring additional trimming or selection processes.

Part Context

This part belongs to the 1N4728A through 1N4764A series of 1-watt silicon Zener diodes manufactured by Central Semiconductor. The series utilizes a standard DO-41 case style for through-hole mounting. These devices are engineered for general-purpose voltage regulation tasks where moderate power handling and reliable performance are prioritized over ultra-low noise specifications.

Replacement Considerations

No official replacement part numbers are documented for this specific model in the provided datasheet.