Guangdong Jiaxun Electronics MLS03N04A 40V/3A N-Channel MOSFET Product Description

Widely used in power management modules for consumer electronics, industrial automation, new energy equipment, and portable devices, it is an ideal solution for optimizing energy efficiency and space utilization.

Product Overview
The MLS03N04A is an N‑channel power device that leverages advanced trench‑type low‑voltage (LV) MOSFET technology, offering a 40 V breakdown voltage and a continuous current rating of 3 A. Its high‑density cell design delivers an ultra‑low on‑state resistance (RDS(ON)), while supporting high‑speed switching, making it ideal for efficient power management and load‑control applications. The device is packaged in SOT‑23 and meets industrial‑grade reliability standards.

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Core Features

• High-performance parameters

  • Withstand Voltage and Current Capability ：

    • Drain-to-source voltage (VDS): 40 V (maximum)

    • Continuous Drain Current (ID): 3 A (VGS = 10 V, TC = 25 °C)

    • Pulse Drain Current (IDM): 12 A (TC = 25°C)

  • Ultra-low on-resistance ：

    • RDS(ON) : 65 mΩ (VGS = 10 V, ID = 2.5 A) / 95 mΩ (VGS = 4.5 V, ID = 1.5 A)

  • High-speed switching characteristics ：

    • Switch delay time: 4.2ns (Conduction) / 7.9ns (Off)

    • Total gate charge (Qg): 5.5 nC (VDS = 10 V, ID = 3 A)

• Electrical Reliability

  • Gate–source voltage rating (VGS): ±20 V (maximum)

  • Drain-to-source breakdown voltage (BV DSS): 40 V (VGS = 0 V, ID = 250 μA)

  • Low leakage current:

    • Drain-to-source leakage current at zero gate voltage (IDSS): <1 μA (VDS = 40 V)

    • Gate-to-source leakage current (IGSS): ±100 nA (VGS = ±20 V)

• Temperature adaptability

  • Junction operating temperature (TJ): -50°C to 150°C

  • Thermal resistance (RθJA): 150 °C/W (based on a 1-square-inch, 2-ounce copper pad)

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Application areas

• Battery protection Lithium Battery Pack Charge-Discharge Management

• Power Management : DC-DC converters, load switches

• Industrial Control : Motor-driven, relay replacement

• Consumer electronics : Portable device power module, USB power supply control

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Packaging and Ordering

• Package type : SOT-23 (compact surface-mount package; see the datasheet for dimensions)

• Packaging Specifications ：

  • Minimum packaging: 3,000 units per tape reel

  • Carton quantity: 180,000 pieces

• Model designation : MLS03N04A (package marking “4003”)

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Product Advantages

• High efficiency and energy saving : Low on-resistance reduces power losses and improves system efficiency.

• Quick response : Nanosecond-level switching speed, suitable for high-frequency circuit design.

• High reliability : Wide temperature range and industrial-grade voltage‑withstand design, suitable for harsh environments.

• Compact design : The SOT-23 package saves PCB space and supports high-density layouts.

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Applicable Scenarios
Widely used in power management modules for consumer electronics, industrial automation, new energy equipment, and portable devices, it is an ideal solution for optimizing energy efficiency and space utilization.

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