### UT4957G-S08-R Electronic Component Overview The **UT4957G-S08-R** is a specialized power management component, specifically a **Dual P-Channel Enhancement Mode Power MOSFET**. It is designed to handle switching and power conversion tasks in compact electronic circuits. --- ### 1. Key Technical Specifications Below are the primary electrical characteristics of the UT4957G-S08-R: | Parameter | Symbol | Value | Unit | |:---|:---:|:---:|:---:| | **Drain-Source Voltage** | $V_{DSS}$ | -30 | V | | **Gate-Source Voltage** | $V_{GSS}$ | ±20 | V | | **Continuous Drain Current** | $I_D$ | -7.2 | A | | **Pulsed Drain Current** | $I_{DM}$ | -30 | A | | **Drain-Source On-Resistance** | $R_{DS(ON)}$ | 28 (max) | mΩ | | **Package Type** | SOP-8 | - | - | --- ### 2. Physical Structure and Pinout The device is housed in an **SOP-8 (Small Outline Package)**, containing two independent P-Channel MOSFETs. * **SOP-8 Pin Configuration:** 1. Source 1 (S1) 2. Gate 1 (G1) 3. Source 2 (S2) 4. Gate 2 (G2) 5. Drain 2 (D2) 6. Drain 2 (D2) 7. Drain 1 (D1) 8. Drain 1 (D1) --- ### 3. Core Features * **Low On-Resistance:** The low $R_{DS(ON)}$ ensures minimal power loss during operation, improving overall energy efficiency. * **High Switching Speed:** Optimized for high-frequency switching applications. * **Halogen-Free:** The "G" in the part number usually indicates a "Green" (halogen-free) device. * **RoHS Compliant:** The "R" suffix typically refers to Tape & Reel packaging and compliance with environmental standards. --- ### 4. Typical Applications This component is commonly found in the following systems: 1. **Power Management:** Used in DC-DC converters and power distribution switches. 2. **Battery Protection:** Ideal for battery-powered portable devices due to its small footprint. 3. **Motor Control:** Small DC motor drivers and load switching. 4. **Inverters:** LCD TV/Monitor backlight inverters. --- ### 5. Identification Code Breakdown `UT4957G-S08-R` * **UT:** Manufacturer code (UTC - Unisonic Technologies). * **4957:** Model series identifier. * **G:** Halogen-free and Lead-free (Green). * **S08:** SOP-8 Package. * **R:** Tape & Reel packing.