The **UT4407L-S08-R** is a high-performance **P-Channel Enhancement Mode MOSFET** manufactured by Unisonic Technologies (UTC). It is primarily designed for power management applications where efficiency and space-saving are critical. --- ## 1. Technical Specifications The following table summarizes the key electrical characteristics of the UT4407L-S08-R: | Parameter | Symbol | Maximum Rating | Unit | | :--- | :---: | :---: | :---: | | Drain-Source Voltage | $V_{DSS}$ | -30 | V | | Gate-Source Voltage | $V_{GSS}$ | ±20 | V | | Continuous Drain Current | $I_D$ | -12 | A | | Pulsed Drain Current | $I_{DM}$ | -50 | A | | Static Drain-Source On-Resistance | $R_{DS(ON)}$ | 13 (typ) @ $V_{GS}$ = -10V | mΩ | | Total Gate Charge | $Q_g$ | 27 | nC | | Power Dissipation | $P_D$ | 3.1 | W | --- ## 2. Key Features * **Low On-Resistance:** Optimized for low $R_{DS(ON)}$, which minimizes conduction losses and improves overall energy efficiency. * **Fast Switching:** Designed for high-speed switching applications. * **Logic Level Compatibility:** Can be driven by low-voltage gate signals. * **Green Product:** The "L" suffix typically denotes a Lead-free (RoHS compliant) or Halogen-free part. * **Package Type:** Comes in an **SOP-8** (Small Outline Package), making it suitable for surface-mount technology (SMT) and high-density PCB layouts. --- ## 3. Pin Configuration (SOP-8) The standard pinout for this P-Channel MOSFET in an SOP-8 package is: | Pin Number | Name | Description | | :--- | :--- | :--- | | 1, 2, 3 | **Source (S)** | Source terminal | | 4 | **Gate (G)** | Control terminal | | 5, 6, 7, 8 | **Drain (D)** | Drain terminal | --- ## 4. Typical Applications The UT4407L is widely used in various power-related circuits, including: 1. **Load Switches:** Turning power rails on/off in mobile devices or laptops. 2. **Battery Protection:** Integrated into Battery Management Systems (BMS) to prevent over-discharge. 3. **DC-DC Converters:** Used in buck or boost converters as the switching element. 4. **Inverters:** Power inversion in compact electronics. --- ## 5. Part Number Breakdown * **UT:** UTC (Unisonic Technologies Co.) * **4407:** Part Series (P-Channel MOSFET) * **L:** Lead-free / Halogen-free * **S08:** SOP-8 Package * **R:** Tape & Reel Packaging ---