1N4733A BK PBFREE

Single Zener Diodes Overview

The Central Semiconductor Corp 1N4733A BK PBFREE is a silicon planar Zener diode designed for voltage regulation. It features a DO-41 glass axial leaded package and operates within a temperature range of -65°C to +200°C. The nominal Zener voltage is 5.1V with a ±5% tolerance, tested at 49mA. Maximum power dissipation is 1.0W at 50°C ambient. Key electrical parameters include a maximum reverse current of 10µA at 4.8V, a maximum DC forward voltage of 1.2V at 200mA, and a maximum Zener impedance of 7Ω at the test current.

Single Zener Diodes Feature Summary

• Highly reliable silicon planar construction for industrial and commercial applications
• Hermetic glass package providing environmental protection
• Lead-free finish compliant with RoHS standards

Single Zener Diodes Applications

• Industrial voltage regulation circuits
• Commercial power supply design
• Computer system protection

Single Zener Diodes Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm the presence of the cathode band and full part number marking on the DO-41 glass case. Ensure the ordering suffix matches the required plating configuration, as specified in Central Semiconductor's ordering guidelines.

Single Zener Diodes Selection Notes

Select this component when a 5.1V reference or regulator is required in a standard axial leaded package. Verify that the 1.0W power dissipation rating and the specific impedance characteristics meet the circuit requirements. Consider the operating temperature range and the hermetic nature of the glass package for the intended environment.

Single Zener Diodes Part Context

This device belongs to the 1N4728A through 1N4764A series of 1-watt silicon Zener diodes manufactured by Central Semiconductor. The series offers various voltage ratings from 3.3V to 100V with consistent mechanical dimensions in the DO-41 case. The 'BK' suffix indicates a black cathode band marking, while 'PBFREE' denotes lead-free plating.

Single Zener Diodes Replacement Considerations

No direct replacement part numbers are documented in the provided source material for this specific item.