KFC4B22180L

FET, MOSFET Arrays Overview

The KFC4B22180L is a dual N-channel MOSFET with an integrated gate resistor, designed for lithium-ion secondary battery protection circuits. It features a CSP package and RoHS compliance. Key electrical parameters include a source-source breakdown voltage of 20 V, a typical on-resistance of 9.4 mΩ at VGS = 4.5 V, and a continuous source current rating of 5 A per channel. The device supports a maximum operating temperature of 150 °C and includes thermal resistance ratings of 312 °C/W on FR4 and 83 °C/W on ceramic substrates.

FET, MOSFET Arrays Feature Summary

• Integrated gate resistor for simplified circuit design
• Low source-source ON resistance for high efficiency
• Compact Chip Size Package (CSP) for space-constrained applications

FET, MOSFET Arrays Applications

• Lithium-ion secondary battery protection circuits

FET, MOSFET Arrays Procurement Notes

Verify the specific manufacturer designation, as the model prefix may indicate regional or OEM variations. Confirm package type and marking symbols against official datasheets to ensure compatibility with existing PCB land patterns. Check for RoHS compliance status and lead time requirements directly with authorized distributors or the manufacturer.

FET, MOSFET Arrays Selection Notes

Select this component for applications requiring low on-resistance in a compact form factor. Ensure the gate drive voltage meets the threshold requirements for optimal performance. Consider thermal management strategies based on the specified thermal resistance values for the intended mounting substrate.

FET, MOSFET Arrays Part Context

This part belongs to the family of dual N-channel MOSFETs optimized for battery protection. It integrates two independent channels within a single small footprint, reducing board space compared to discrete solutions. The inclusion of gate resistors aids in controlling switching speeds and minimizing electromagnetic interference.

FET, MOSFET Arrays Replacement Considerations

Check for direct substitutes from Panasonic Industry, such as the FC4B22180L, ensuring pinout and electrical characteristics match. Verify package dimensions and thermal properties before substitution.

FET, MOSFET Arrays FAQ

What is the purpose of the integrated gate resistor?

The integrated gate resistor helps control the switching speed of the MOSFET, reducing ringing and electromagnetic interference without requiring external components.

Is the KFC4B22180L suitable for high-temperature environments?

Yes, the device has a maximum junction temperature rating of 150 °C, making it suitable for various industrial and consumer applications.

How does the on-resistance vary with gate-source voltage?

The on-resistance decreases as the gate-source voltage increases. Typical values are provided for VGS levels of 2.5 V, 3.1 V, 3.8 V, and 4.5 V in the datasheet.