The **MMBTA06-AE3-R** is a specific variant of the **MMBTA06**, which is a high-voltage NPN Silicon epitaxial planar transistor. It is widely used for general-purpose switching and amplification applications. ### 1. Technical Specifications The table below summarizes the key electrical characteristics of the MMBTA06-AE3-R. | Parameter | Symbol | Value | Unit | | :--- | :--- | :--- | :--- | | **Collector-Emitter Voltage** | $V_{CEO}$ | 80 | V | | **Collector-Base Voltage** | $V_{CBO}$ | 80 | V | | **Emitter-Base Voltage** | $V_{EBO}$ | 4.0 | V | | **Collector Current (DC)** | $I_C$ | 500 | mA | | **Power Dissipation** | $P_D$ | 350 | mW | | **DC Current Gain** | $h_{FE}$ | 100 (Min) | @ $I_C = 100mA$ | | **Current Gain Bandwidth** | $f_T$ | 100 (Min) | MHz | --- ### 2. Package and Part Number Breakdown The suffixing in the part number (UTC - Unisonic Technologies Co.) usually refers to the packaging and material composition: * **MMBTA06**: The core model (NPN Driver Transistor). * **AE3**: Refers to the **SOT-23** package type. * **R**: Typically indicates "Tape and Reel" packaging for automated SMT (Surface Mount Technology) assembly. * **Halogen Free**: Most "-R" variants from UTC are lead-free and halogen-free. ### 3. Pin Configuration (SOT-23) The SOT-23 package has three pins. For the MMBTA06: 1. **Pin 1 (Base):** Controls the current flow between Collector and Emitter. 2. **Pin 2 (Emitter):** Usually connected to the ground in NPN switching. 3. **Pin 3 (Collector):** Connected to the load. --- ### 4. Key Applications * **Driver Circuits:** Used to drive small relays, LEDs, or other transistors. * **Signal Amplification:** Low-power audio or signal processing. * **Switching:** Acting as a digital switch for components requiring up to 500mA of current. ### 5. Equivalent Replacement Parts If the MMBTA06-AE3-R is unavailable, the following are common equivalents (ensure you check the specific pinout for the package): * **KST06** (Samsung/ON Semi) * **PMBTA06** (Nexperia) * **MMBTA05** (Lower voltage version, 60V)