### UT6402G-AE3-R: Electronic Specifications and Overview The **UT6402G-AE3-R** is a high-performance **P-Channel Enhancement Mode Field Effect Transistor (MOSFET)** manufactured by Unisonic Technologies (UTC). It is primarily designed for power management applications where low on-resistance and high-speed switching are critical. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the device: | Parameter | Symbol | Maximum Rating | Unit | | :--- | :--- | :--- | :--- | | Drain-Source Voltage | $V_{DSS}$ | -30 | V | | Gate-Source Voltage | $V_{GSS}$ | ±20 | V | | Continuous Drain Current | $I_D$ | -5.4 | A | | Pulsed Drain Current | $I_{DM}$ | -20 | A | | Power Dissipation ($T_A=25^\circ C$) | $P_D$ | 1.25 | W | | Static Drain-Source On-Resistance | $R_{DS(ON)}$ | 55 (typ) / 65 (max) | mΩ | | Junction Temperature | $T_J$ | +150 | °C | --- ### 2. Package and Pin Configuration The "AE3" suffix indicates that this part is housed in a **SOT-23** package, which is a small, surface-mount plastic package ideal for space-constrained PCB designs. * **Pin 1:** Gate (G) - Controls the conductivity of the device. * **Pin 2:** Source (S) - The source of charge carriers. * **Pin 3:** Drain (D) - The exit for charge carriers. --- ### 3. Features and Benefits * **Low On-Resistance:** Minimizes power loss during conduction, improving efficiency in battery-powered devices. * **Fast Switching Speed:** Reduces switching losses in high-frequency applications. * **Logic Level Compatibility:** Can be driven directly by low-voltage microcontrollers or logic gates. * **Halogen-Free:** The "G" in the part number signifies it is a "Green" product (Halogen-free and Lead-free). --- ### 4. Typical Applications The UT6402G-AE3-R is commonly used in the following circuits: 1. **Load Switches:** Turning power rails on or off in portable electronics. 2. **DC-DC Converters:** Serving as the switching element in buck or boost regulators. 3. **Battery Protection:** Managing charging and discharging paths in Li-ion battery packs. 4. **Inverters:** Low-power inversion stages for signal or power control. ---