The **UT4435G-S08-R** is a high-performance **P-Channel Enhancement Mode Field Effect Transistor (MOSFET)**. It is widely used in power management applications due to its low on-state resistance and high efficiency. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the component: | Parameter | Symbol | Maximum Rating | | :--- | :--- | :--- | | **Drain-Source Voltage** | $V_{DSS}$ | -30 V | | **Gate-Source Voltage** | $V_{GSS}$ | ±20 V | | **Continuous Drain Current** | $I_{D}$ | -9.1 A | | **Pulsed Drain Current** | $I_{DM}$ | -50 A | | **Power Dissipation** | $P_{D}$ | 2.5 W | | **Static Drain-Source On-Resistance** | $R_{DS(ON)}$ | 20 mΩ (at $V_{GS}=-10V$) | | **Operating Temperature** | $T_{J}$ | -55 to +150 °C | --- ### 2. Part Number Breakdown Understanding the suffix and prefix of the part helps in identifying the packaging and environmental standards: * **UT4435**: The basic model series (P-Channel MOSFET). * **G**: Stands for **Halogen-Free** and Green product. * **S08**: Indicates the package type, which is **SOP-8** (Small Outline Package with 8 pins). * **R**: Indicates the packing type, typically **Tape & Reel**. --- ### 3. Pin Configuration (SOP-8) In a standard SOP-8 package for this MOSFET, the pins are usually assigned as follows: | Pin Number | Designation | Description | | :--- | :--- | :--- | | 1, 2, 3 | **S** | Source | | 4 | **G** | Gate | | 5, 6, 7, 8 | **D** | Drain | --- ### 4. Typical Applications The UT4435G is designed for high-density mounting and is ideal for: 1. **Power Management**: Load switching in battery-powered devices. 2. **DC-DC Converters**: High-efficiency buck or boost regulators. 3. **Notebook Computers**: Power distribution and battery charging circuits. 4. **Motor Control**: Small DC motor drive stages. --- ### 5. Features * **Low $R_{DS(ON)}$**: Minimizes power loss during conduction. * **Fast Switching Speed**: Increases efficiency in high-frequency applications. * **High Power and Current Handling**: Capable of managing up to 9.1A in a small footprint.