## UTM4953-S08-R Electronic Component Overview The **UTM4953-S08-R** is a Dual P-Channel enhancement mode Field Effect Transistor (MOSFET). It is commonly used in power management applications where space is limited and efficient switching is required. ### 1. Key Technical Specifications | Parameter | Symbol | Maximum Rating | Unit | | :--- | :--- | :--- | :--- | | Drain-Source Voltage | $V_{DS}$ | -30 | V | | Gate-Source Voltage | $V_{GS}$ | ±20 | V | | Continuous Drain Current | $I_D$ | -5.0 | A | | Pulsed Drain Current | $I_{DM}$ | -20 | A | | Total Power Dissipation | $P_D$ | 2.0 | W | | Package Type | SOP-8 | Standard 8-pin | - | --- ### 2. Features and Pin Configuration The UTM4953-S08-R integrates two independent P-channel MOSFETs into a single 8-pin Small Outline Package (SOP-8). * **Dual Configuration:** Saves PCB space compared to two individual transistors. * **Low On-Resistance ($R_{DS(ON)}$):** Minimizes power loss during operation (typically around $53m\Omega$ at $V_{GS} = -10V$). * **Fast Switching:** Suitable for high-frequency pulse width modulation (PWM). #### Pin Mapping (SOP-8) | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | S1 | Source 1 | | 2 | G1 | Gate 1 | | 3 | S2 | Source 2 | | 4 | G2 | Gate 2 | | 5, 6 | D2 | Drain 2 | | 7, 8 | D1 | Drain 1 | --- ### 3. Common Applications Due to its P-channel characteristics and dual-die design, it is frequently found in: 1. **Load Switches:** Used to connect or disconnect a power source to a load. 2. **Battery Protection:** Ideal for Li-ion battery management systems. 3. **DC/DC Converters:** Acts as a high-side switch in buck converters. 4. **LCD Display Inverters:** Part of the power driving circuit for backlighting. ### 4. Part Number Breakdown * **UTM:** Manufacturer code / Series identifier. * **4953:** Specific model number (Dual P-Channel). * **S08:** Package type (SOP-8). * **R:** Tape & Reel packaging (standard for automated SMT assembly). ---