The **UT70P03L-TN3-R** is a high-power P-Channel enhancement mode MOSFET designed by Unisonic Technologies (UTC). It is primarily used in power management applications where high efficiency and low heat dissipation are required. --- ### ## Technical Specifications Below are the key electrical parameters for the UT70P03L-TN3-R: | Parameter | Symbol | Maximum Rating | | :--- | :--- | :--- | | **Drain-Source Voltage** | $V_{DSS}$ | -30 V | | **Gate-Source Voltage** | $V_{GSS}$ | ±20 V | | **Continuous Drain Current** | $I_D$ | -70 A | | **Pulsed Drain Current** | $I_{DM}$ | -280 A | | **Static Drain-Source On-Resistance** | $R_{DS(ON)}$ | 8.0 mΩ (at $V_{GS}$ = -10V) | | **Total Gate Charge** | $Q_g$ | 120 nC (typical) | | **Operating Junction Temp** | $T_j$ | -55 to +150 °C | --- ### ### Key Features and Construction 1. **Low On-Resistance ($R_{DS(ON)}$):** With a resistance of only 8.0 mΩ, this part minimizes power loss during conduction, making it ideal for high-current applications. 2. **Package Type (TN3):** The "TN3" suffix refers to the **TO-252 (D-PAK)** surface-mount package. This package is optimized for thermal performance and space-saving on PCBs. 3. **High Switching Speed:** Designed for fast response, reducing switching losses in DC-DC converters. 4. **Avalanche Ruggedness:** Built to withstand high-energy pulses that can occur in inductive load switching. --- ### ### Typical Applications The UT70P03L is commonly found in the following electronic circuits: * **Load Switching:** Used as a high-side switch to turn power on/off for specific sub-systems. * **Battery Protection:** Integrated into BMS (Battery Management Systems) due to its high current handling. * **DC-DC Converters:** Serves as a power switch in buck or boost regulators. * **Motor Control:** Utilized in H-bridge circuits for small DC motors. --- ### ### Part Number Breakdown Understanding the UTC naming convention: * **UT70P03**: 70 Amp rating, P-Channel, 30V rating. * **L**: Lead-free/Halogen-free. * **TN3**: TO-252 Package. * **R**: Tape and Reel packaging.