The **UT8205AL-SO8-R** is a dual N-Channel enhancement mode Power MOSFET, commonly used in battery protection circuits and power management applications. It is manufactured by Unisonic Technologies (UTC). --- ## 1. Key Specifications Below are the primary electrical characteristics for the UT8205AL: | Parameter | Symbol | Value | Unit | |:---|:---:|:---:|:---:| | Drain-Source Voltage | $V_{DSS}$ | 20 | V | | Gate-Source Voltage | $V_{GSS}$ | ±12 | V | | Continuous Drain Current | $I_D$ | 6.0 | A | | Pulsed Drain Current | $I_{DM}$ | 25 | A | | Power Dissipation | $P_D$ | 1.5 | W | | On-State Resistance (Max) | $R_{DS(ON)}$ | 28 (at $V_{GS}=4.5V$) | mΩ | --- ## 2. Internal Structure and Package The "AL" suffix typically indicates a specific electrical grade or lead-free status, while "SO8" refers to the physical package. ### Package: SOP-8 * **Dimensions:** Small Outline Package with 8 pins. * **Configuration:** It contains **two independent N-channel MOSFETs** within a single chip. * **Thermal Efficiency:** Designed for surface mount technology (SMT) with moderate heat dissipation capabilities. ### Pinout Configuration (Standard SOP-8) | Pin | Description | |:---:|:---| | 1 | Source 1 | | 2, 3 | Drain 1 | | 4 | Gate 1 | | 5 | Gate 2 | | 6, 7 | Drain 2 | | 8 | Source 2 | --- ## 3. Key Features * **Low On-Resistance:** Minimizes power loss during conduction, which is critical for battery-operated devices. * **Low Threshold Voltage:** Can be driven by low-voltage logic (suitable for 2.5V or 4.5V gate drives). * **High Density Cell Design:** Provides extremely low $R_{DS(ON)}$ for its size. --- ## 4. Common Applications The UT8205AL is most frequently found in: 1. **Lithium-Ion Battery Protection:** Used as the switching element to disconnect the battery in case of overcharge or over-discharge. 2. **Power Management:** DC-DC converters and load switching in portable electronics (smartphones, tablets). 3. **Motor Control:** Small BLDC or DC motor drivers for low-power applications. ---