The **2SA1013L-P-AB3-R** is a specific part number for a high-voltage PNP epitaxial silicon transistor. This component is widely used in power switching and color TV vertical deflection output circuits. ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics: | Prefix/Suffix | Meaning | | :--- | :--- | | **2SA1013** | The base model number (PNP High Voltage Transistor). | | **L** | Indicates Lead-Free / RoHS compliant. | | **P** | Rank/Gain classification (hFE range, typically 160–320). | | **AB3** | Package code (typically refers to the **SOT-89** surface mount package). | | **R** | Packing style (Tape & Reel). | --- ### 2. Key Technical Specifications Below are the absolute maximum ratings and electrical characteristics typically found in the datasheet: | Parameter | Symbol | Maximum Rating | | :--- | :--- | :--- | | Collector-Base Voltage | $V_{CBO}$ | -160 V | | Collector-Emitter Voltage | $V_{CEO}$ | -160 V | | Emitter-Base Voltage | $V_{EBO}$ | -6 V | | Collector Current (DC) | $I_C$ | -1 A | | Collector Current (Pulse) | $I_{CP}$ | -2 A | | Collector Power Dissipation | $P_C$ | 500 mW (SOT-89 package) | | Transition Frequency | $f_T$ | 15 MHz (typical) | --- ### 3. Pin Configuration (SOT-89) Since this part uses the **AB3 (SOT-89)** package, the pinout is generally as follows when looking at the front (marked side) with leads pointing down: 1. **Base (B)**: Control terminal. 2. **Collector (C)**: Connected to the large cooling tab (output). 3. **Emitter (E)**: Reference terminal. --- ### 4. Applications The 2SA1013 series is designed for high-voltage environments where standard general-purpose transistors (like the BC557) would fail. Common uses include: * **Vertical Deflection Output**: Used in CRT monitors and televisions. * **Power Switching**: Driving loads in industrial control circuits. * **Audio Amplifiers**: High-voltage driver stages in power amplifiers. * **DC-DC Converters**: Handling voltage regulation tasks. --- ### 5. Complementary NPN Part For push-pull circuits or balanced amplifier stages, this PNP transistor is often paired with its NPN counterpart: * **Complementary Pair**: **2SC2383** ---