The **LSMT2-22050-R** is a high-performance, surface-mount (SMT) linear vibration motor, commonly referred to as a **Linear Resonant Actuator (LRA)**. These components are primarily used to provide haptic feedback (vibrations) in compact electronic devices. --- ### ## Technical Specifications The following table outlines the typical electrical and mechanical characteristics for this specific part: | Parameter | Specification | | :--- | :--- | | **Type** | Linear Resonant Actuator (LRA) | | **Mounting Type** | Surface Mount (SMT / SMD) | | **Rated Voltage** | 2.0 Vrms | | **Operating Voltage Range** | 0.1 ~ 2.05 Vrms | | **Resonant Frequency** | 205 Hz (± 10 Hz) | | **Rated Current** | ~95 mA (Max) | | **Acceleration (G-Force)** | ~1.5 G - 2.0 G | | **Operating Temperature** | -20°C to +70°C | --- ### ## Key Electronic Features ### 1. Resonance-Based Operation Unlike traditional DC vibration motors (ERM) that use offset weights, the LSMT2-22050-R relies on a spring-mass system. It must be driven at its **Resonant Frequency (205 Hz)** to achieve maximum displacement and efficiency. ### 2. AC Driving Signal This part cannot be driven by a simple DC constant voltage. It requires an **AC signal** or a **PWM (Pulse Width Modulation)** signal generated by a dedicated Haptic Driver IC (such as the TI DRV2605 series). ### 3. Fast Response Time * **Rise Time:** Extremely short, allowing for "crisp" clicks or pulses. * **Braking:** Because it is driven by an electromagnetic coil, the driver can apply an out-of-phase signal to stop the vibration instantly, preventing "ghost" vibrations. --- ### ## Physical Construction * **Form Factor:** Rectangular/Block shape optimized for automated SMT pick-and-place machines. * **Terminals:** Reflow solderable pads on the bottom of the casing. * **Internal Components:** Includes a voice coil, permanent magnets, and a precision spring mechanism. --- ### ## Application Use Cases 1. **Smartphones:** Providing haptic "ticks" for virtual keyboards or UI navigation. 2. **Wearables:** Silent alarms and notification alerts for smartwatches or fitness trackers. 3. **Medical Devices:** Tactile alerts for hand-held diagnostic tools. 4. **Touch Panels:** Simulating the feel of a physical button press on glass surfaces.