The **SMA12VG-CC2-R** is a specific electronic component belonging to the category of **DC Micro Motors** (specifically Vibration Motors). It is commonly used in handheld electronics to provide haptic feedback. --- ### 1. Technical Specifications Below is a breakdown of the core electrical and mechanical characteristics of this component: | Feature | Specification | | :--- | :--- | | **Motor Type** | Cylindrical / Pager Motor | | **Rated Voltage** | 3.0V DC | | **Operating Voltage Range** | 2.0V – 3.6V DC | | **Rated Current** | Max 90mA | | **Rated Speed** | 12,000 ± 2,500 RPM | | **Starting Voltage** | 1.5V DC Max | | **Direction of Rotation** | CW (Clockwise) or CCW | | **Operating Temp** | -20°C to +60°C | --- ### 2. Key Components & Construction The part number "SMA" often refers to a "Surface Mount Assembly" or a specific series by manufacturers like **SMC** or **Jinlong**. The physical construction includes: * **Eccentric Rotating Mass (ERM):** A small, asymmetrical weight (often tungsten or brass) attached to the output shaft. When it spins, the displacement of mass creates the vibration effect. * **Commutator & Brushes:** Internal metal brushes transfer electrical current to the rotating armature. * **Housing:** A stainless steel or nickel-plated case that protects the internal windings and permanent magnets. * **Terminals:** The "CC2" suffix often denotes the lead wire configuration or specific connector type used for PCB integration. --- ### 3. Application Use Cases Because of its small form factor and low power consumption, the SMA12VG series is typically found in: 1. **Wearables:** Smartwatches and fitness trackers for silent alarms. 2. **Mobile Devices:** Haptic alerts for notifications. 3. **Medical Tools:** Portable diagnostic devices that require tactile user confirmation. 4. **IoT Devices:** Handheld controllers or remote sensors. --- ### 4. Implementation Example To drive this motor using a microcontroller (like an Arduino or ESP32), you should use a transistor (BJT or MOSFET) because the 90mA draw exceeds the current limit of most GPIO pins. ```cpp // Simple PWM Control for Vibration Intensity const int motorPin = 9; // Connected to Base of NPN Transistor void setup() { pinMode(motorPin, OUTPUT); } void loop() { analogWrite(motorPin, 150); // Medium vibration delay(500); analogWrite(motorPin, 0); // Stop delay(1000); } ``` ---