EFC6618R-A-TF

Overview

The EFC6618R-A-TF is an N-channel depletion-mode MOSFET manufactured by onsemi. It features a maximum drain-source voltage of 12 V and a continuous drain current of 27 A. The device utilizes a CSP package with six pins for surface mount installation. Key electrical parameters include a maximum drain-source resistance of 6.3 mΩ, a gate threshold voltage range from 0.5 V to 1.3 V, and a maximum power dissipation of 2.5 W. It operates at temperatures up to +150 °C and contains two chip elements in a common-drain configuration.

Feature Summary

• Depletion mode operation allows the device to conduct current when the gate-to-source voltage is zero.
• Low on-resistance design supports high-current applications within a compact footprint.
• High thermal capability enables reliable performance at elevated junction temperatures.

Applications

• Battery management systems requiring normally-on protection switches
• Power distribution units utilizing low-voltage DC loads
• Automotive electronics operating under harsh thermal conditions

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and tape-and-reel specifications. Ensure that the component matches the required depletion-mode characteristics for the intended circuit topology. Cross-reference the part number with authorized distributors to validate authenticity and traceability before procurement.

Selection Notes

Select this component based on its 12 V rating and 27 A current capacity for low-voltage power switching. The depletion mode characteristic necessitates careful gate biasing to ensure proper turn-off functionality. Evaluate the thermal requirements against the 2.5 W dissipation limit and the 6.3 mΩ resistance to maintain efficiency in the target application environment.

Part Context

This component belongs to the EFC series of power MOSFETs designed for robust performance in space-constrained environments. The depletion mode variant provides distinct advantages for fail-safe applications where a default conducting state is required. It complements enhancement-mode devices in mixed-signal power management circuits.

Replacement Considerations

Direct substitutes must match the 12 V, 27 A, and depletion-mode specifications. Verify pinout compatibility and thermal resistance values. Consult manufacturer cross-reference lists for equivalent parts with identical electrical characteristics and package dimensions.