## Overview of the 2SB968-R Transistor The **2SB968-R** is a Silicon PNP Epitaxial Planar Transistor, primarily designed for low-frequency power amplification and power switching applications. It is often paired with its NPN complement, the **2SD1302**. --- ### 1. Key Technical Specifications The "R" suffix typically denotes a specific **hFE (DC Current Gain)** classification range. | Parameter | Symbol | Rating | Unit | | :--- | :--- | :--- | :--- | | Collector-Base Voltage | $V_{CBO}$ | -25 | V | | Collector-Emitter Voltage | $V_{CEO}$ | -20 | V | | Emitter-Base Voltage | $V_{EBO}$ | -5 | V | | Collector Current (DC) | $I_C$ | -0.5 | A | | Collector Power Dissipation | $P_C$ | 600 | mW | | Junction Temperature | $T_j$ | 150 | °C | --- ### 2. Physical Characteristics The 2SB968-R is commonly found in a **TO-92** or similar small-signal plastic package, making it suitable for high-density PCB layouts. * **Pin Configuration:** 1. **Emitter** (E) 2. **Collector** (C) 3. **Base** (B) *(Note: Always verify the specific manufacturer datasheet for pinout, as some variations exist.)* --- ### 3. Electrical Features * **Low Saturation Voltage:** $V_{CE(sat)}$ is typically low, ensuring efficient power usage and minimal heat generation during switching. * **High Gain:** The "R" classification usually indicates an hFE range between **180 and 390**, providing excellent signal amplification. * **Complementary Pair:** Works optimally when used alongside the **2SD1302** in push-pull amplifier circuits. --- ### 4. Common Applications Due to its moderate current handling and high gain, the 2SB968-R is used in: * **Audio Preamplifiers:** Increasing the strength of low-level audio signals. * **Driver Stages:** Driving larger power transistors in motor control or audio outputs. * **Voltage Regulation:** Serving as a pass transistor in low-voltage power supplies. * **Switching:** Acting as an electronic switch for small loads (LEDs, relays). --- ### 5. Equivalent/Replacement Parts If the 2SB968-R is unavailable, the following parts may serve as functional substitutes (check pinouts before installing): * **BC327** (Higher voltage, different pinout) * **2N3906** (Lower current capacity) * **S8550** (High current PNP)