The **2SD882SSL-P-AE3-R** is a specific variant of the widely used 2SD882 NPN medium-power transistor. It is designed for high-speed switching and power amplification applications. --- ### 1. General Specifications The device is characterized by its high current handling capability and low saturation voltage, making it efficient for power management. | Parameter | Value | | :--- | :--- | | **Transistor Polarity** | NPN | | **Collector-Emitter Voltage ($V_{CEO}$)** | 30V | | **Collector-Base Voltage ($V_{CBO}$)** | 40V | | **Emitter-Base Voltage ($V_{EBO}$)** | 6V | | **Collector Current ($I_C$)** | 3A (Continuous) | | **Peak Collector Current ($I_{CP}$)** | 7A | | **Power Dissipation ($P_D$)** | 0.5W to 1.25W (Package dependent) | | **DC Current Gain ($h_{FE}$)** | 160 – 320 (P-Rank) | --- ### 2. Nomenclature & Suffix Breakdown Understanding the specific part number helps identify the packaging and classification: * **2SD882**: The base model (NPN silicon transistor). * **SSL**: Often refers to a specific lead-free or low-profile configuration depending on the manufacturer (UTC - Unisonic Technologies). * **-P**: Represents the **Gain Classification**. The "P" rank typically falls between 160 and 320. * **-AE3**: Indicates the **Package Type**. In the UTC numbering system, AE3 usually corresponds to the **SOT-23** surface-mount package. * **-R**: Refers to the packing method, typically **Tape & Reel**. --- ### 3. Key Features * **Low Saturation Voltage:** $V_{CE(sat)}$ is typically only 0.3V at $I_C = 2A$, which reduces power loss and heat generation. * **High Current Capacity:** Despite its small size, it can handle up to 3A of continuous current. * **Complementary Pair:** Its PNP counterpart is the **2SB772**, often used together in Push-Pull amplifier circuits. --- ### 4. Typical Applications 1. **Voltage Regulation:** Used in linear regulators or DC-DC converters. 2. **Relay Drivers:** Ideal for driving solenoids or high-current relays from a low-power microcontroller signal. 3. **Audio Amplification:** Used in the output stage of small portable audio devices. 4. **Backlight Inverters:** Commonly found in display power circuits. --- ### 5. Pinout Configuration (SOT-23) For the AE3 (SOT-23) package, the pinout is generally as follows: ```text (3) Collector | +---+---+ | (3) | | | +---+---+ (1) | (2) Base Emitter ```