onsemi FDMC6675BZ

Summary of FDMC6675BZ P-Channel MOSFET from onsemi

The FDMC6675BZ from onsemi is a power-efficient P-Channel MOSFET, engineered to minimize losses in demanding load switch applications. Featuring advanced trench technology and robust ESD characteristics, it delivers reliable performance for designers focused on compact, high-current, and low-resistance requirements. Housed in a WDFN8 (3.3 × 3.3 mm) surface-mount package, this device addresses the operational challenges prevalent in notebook, server, and battery power management circuits.

Main Characteristics and Advantages of FDMC6675BZ MOSFET

The FDMC6675BZ stands out for its extremely low on-resistance, offering a maximum $R_{DS(on)}$ of 14.4 mΩ at $V_{GS} = -10$ V and $I_D = -9.5$ A, and 27.0 mΩ at $V_{GS} = -4.5$ V and $I_D = -6.9$ A. This distinction supports high-efficiency switching and minimizes conduction losses, critically important for applications needing optimal thermal and energy management.

The device integrates ESD protection up to 8 kV (HBM typical), safeguarding against transient surges during assembly and operation. An extended maximum gate-source voltage ($V_{GSS}$) range of -25 V further enhances its suitability for battery-based and mobile electronics.

With a peak current handling capability of up to 20 A (when optimally heat-sunk at $T_C$), the FDMC6675BZ addresses power integrity challenges in compact system designs. Its compliance with RoHS, REACH, and halogen-free/BFR-free material standards ensures global usability without regulatory barriers.

Electrical Specifications and Thermal Properties of FDMC6675BZ

From an electrical engineering standpoint, the FDMC6675BZ delivers:

Maximum continuous drain current: 9.5 A (@ $T_A = 25^{\circ}C$), 20 A (@ $T_C$)

Maximum drain-source voltage: -30 V

Power dissipation: 2.3 W (@ $T_A$), 36 W (@ $T_C$)

Thermal performance is dictated by the mounting configuration, with thermal resistance ($R_{\theta JA}$) measured at:

53°C/W (1 in² 2 oz copper pad, FR-4 board)

125°C/W (minimum pad)

The MOSFET’s transient thermal response and maximum power dissipation curves further guide engineers on short pulse operation and board layout optimization.

Switching characteristics and safe operating area are quantified through typical performance graphs, enabling designers to evaluate suitability under various load profiles and temperature gradients. The device also highlights forward biased safe operating area (SOA) boundaries for robust circuit protection.

Physical Package Information and Mechanical Data for FDMC6675BZ

The FDMC6675BZ is packaged in the WDFN8 3.3x3.3 mm form factor (case 511DR), offering a low-profile, space-efficient footprint for densely populated PCBs. ASME Y14.5M, 2009 dimensional standards are met, with tolerances supporting automated pick-and-place and reflow soldering processes.

Key package details:

Terminal pitch: 0.65 mm

Body dimensions exclude minimal mold flash/gate burrs

Pb-free and halogen-free material composition

For high-reliability mounting, detailed recommendations are provided in onsemi’s soldering and mounting reference manual, ensuring robust attachment and thermal performance across manufacturing environments.

Use Cases for FDMC6675BZ in Electronic Applications

Engineers frequently deploy the FDMC6675BZ in:

Load switches for notebooks and servers, managing system on/off power with minimal losses

Battery pack power management in portable applications, leveraging low $R_{DS(on)}$ to prolong battery life

Power distribution switches where high transient immunity and efficient heat dissipation are critical

Its compact package and robust ratings enable integration in modern embedded and portable platforms, supporting board designs that demand high current capability and low profile components. Additionally, its extended gate voltage range allows for direct drive from battery rail voltages in mobile systems.

FDMC6675BZ Regulatory Compliance and Environmental Aspects

Global electronics supply chains and environmental regulations increasingly require component adherence to safety and material standards. The FDMC6675BZ is:

RoHS3 compliant (lead-free and environmentally sound)

REACH unaffected (free from regulated substances)

Halogen free/BFR free, ensuring compatibility with eco-design directives

Additionally, the device features a Moisture Sensitivity Level (MSL) of 1 (unlimited), supporting simplified inventory management and production logistics.

Alternative and Substitute Models Comparable to FDMC6675BZ

While evaluating the FDMC6675BZ, engineers and procurement professionals may consider similar P-Channel MOSFETs from onsemi or other reputable suppliers, focusing on devices with:

Comparable $R_{DS(on)}$ at equivalent gate-source voltages

Current ratings at or above 9.5 A continuous or 20 A pulsed

Surface-mount WDFN8 or similar package dimensions

Considerations include ESD performance, RoHS and REACH compliance, and manufacturer support for power management in notebook and server environments. It’s recommended to benchmark alternatives against critical specifications such as on-resistance, thermal resistance, and gate voltage tolerance to ensure drop-in compatibility and consistent performance.

Conclusion

: Evaluating FDMC6675BZ for engineered solutions

The FDMC6675BZ P-Channel MOSFET by onsemi delivers high-efficiency, low-loss switching required in advanced load switch and battery management applications. Its combination of low $R_{DS(on)}$, robust ESD protection, and compact WDFN8 packaging provide engineers and procurement teams with a versatile solution compatible with demanding regulatory and environmental standards. By assessing the FDMC6675BZ alongside potential equivalents, design teams can maximize system efficiency and reliability in today’s portable and server architectures.