The **STSM-31-R** is a specific electronic component belonging to the category of **Slide Switches**. It is a sub-miniature, surface-mount (SMT) component designed for small-scale electronic devices where space is at a premium. --- ## 1. Technical Specifications Below are the typical technical parameters for the STSM-31-R series: | Feature | Specification | | :--- | :--- | | **Switch Function** | SP3T (Single Pole, Triple Throw) | | **Mounting Type** | Surface Mount (SMD/SMT), Right Angle | | **Current Rating** | 300mA | | **Voltage Rating** | 6V DC | | **Contact Resistance** | 70 mΩ Max | | **Insulation Resistance** | 100 MΩ Min at 500V DC | | **Dielectric Strength** | 500V AC for 1 minute | | **Operating Life** | 10,000 Cycles | --- ## 2. Key Electronic Components & Features ### A. SP3T Configuration The "31" in the part number typically denotes a **Single Pole, Three Throw** configuration. This means the switch has one input (common) and can be toggled between three different output positions. ### B. Right-Angle Actuation The "R" suffix usually indicates a **Right-Angle** orientation. This means the actuator (the slider) moves parallel to the PCB surface, and the handle protrudes from the side of the board. This is ideal for side-access controls on handheld devices. ### C. Surface Mount Technology (SMT) The part is designed with "Gull-wing" or flat leads. This allows for automated pick-and-place assembly and reflow soldering, which is standard in modern electronics manufacturing. --- ## 3. Terminal Layout (Conceptual) Internally, the switch connects a common pin to one of three terminals depending on the slider position: ```text Position 1: Pin 1 <-> Common Position 2: Pin 2 <-> Common Position 3: Pin 3 <-> Common ``` --- ## 4. Common Applications * **Consumer Electronics:** Power on/off/standby switches for MP3 players or cameras. * **Mode Selection:** Switching between different operating modes (e.g., Off/Low/High) in small appliances. * **Telecommunications:** Channel selection or settings configuration in mobile peripherals. * **Medical Devices:** Small handheld diagnostic tools requiring compact interfaces.