1N4623 BK PBFREE

Overview

The Central Semiconductor Corp 1N4623 BK PBFREE is a silicon Zener diode designed for low leakage, low current, and low noise applications. It features a nominal Zener voltage of 4.3 V with a 5% tolerance range from 4.085 V to 4.515 V at a test current of 250 µA. The device dissipates up to 250 mW and operates within a junction temperature range of -65°C to +200°C. Key electrical parameters include a maximum reverse current of 4.0 µA at 2.0 V, a maximum Zener impedance of 1600 Ω, and a noise density of 1.0 µV/Hz at 250 µA.

Feature Summary

• Designed for low leakage, low current, and low noise applications
• Utilizes silicon construction for stable performance
• Features a DO-35 axial through-hole package

Applications

• Low noise signal conditioning circuits
• Precision voltage reference applications
• Low current protection circuits

Procurement Notes

Verify the specific ordering suffix required for your manufacturing process. The 'PBFREE' designation indicates lead-free plating options as defined by the manufacturer's standard terms. Confirm mechanical outline compatibility with existing footprints. Ensure thermal management aligns with the specified power dissipation limits during operation.

Selection Notes

Select this component when circuit requirements demand minimal noise generation and low reverse leakage currents. The 4.3 V nominal voltage suits specific reference needs within the 1.8 V to 6.2 V series range. Consider the 1600 Ω impedance limit for regulation accuracy in high-impedance environments compared to lower impedance alternatives.

Part Context

This part belongs to the 1N4614 through 1N4627 series of silicon Zener diodes manufactured by Central Semiconductor Corp. The series covers voltages from 1.8 V to 6.2 V with consistent 250 mW power dissipation capabilities. Devices are marked with a 'C' prefix followed by the part number or a specific marking code.

Replacement Considerations

Public confirmed substitute part numbers: 1N4623-1E3 (Microchip Technology). Verify pinout and package dimensions match DO-35 specifications before implementation.

FAQ

What is the maximum reverse current specification for this diode?

The maximum reverse current is 4.0 µA measured at a reverse voltage of 2.0 V.

Does this component support lead-free processing?

Yes, the 'PBFREE' suffix indicates the device is available with lead-free plating options according to manufacturer standards.