The **BS-16A-R** is a specific electronic component primarily identified as a **tactile switch** (or tact switch) or sometimes a specialized **battery connector/holder** depending on the specific manufacturer series (commonly associated with brands like Shinmei or various generic electronics suppliers). In the most common industrial context, it refers to a **Right-Angle SMT (Surface Mount Technology) Tactile Switch**. --- ## 1. Technical Specifications Below are the typical electrical and mechanical specifications for the BS-16A-R: | Parameter | Specification | | :--- | :--- | | **Mounting Type** | Surface Mount (SMT) | | **Orientation** | Right-Angle (Side-actuated) | | **Contact Current Rating** | 50mA | | **Voltage Rating** | 12V DC | | **Contact Resistance** | < 100mΩ | | **Insulation Resistance** | > 100MΩ (100V DC) | | **Operating Force** | 160gf (grams-force) | | **Durability (Life)** | 50,000 to 100,000 cycles | --- ## 2. Key Features * **Form Factor:** The "R" suffix usually denotes "Right-Angle," meaning the button is pressed parallel to the PCB rather than from the top. * **Compact Design:** These switches are designed for space-constrained applications like handheld devices. * **Tactile Feedback:** Provides a distinct "click" sensation to the user when the circuit is closed. * **Tape and Reel Packaging:** Usually supplied in reels for automated pick-and-place assembly machines. --- ## 3. Pinout and Internal Structure The device typically features 2 or 4 pins: 1. **Switch Contacts:** Two pins that close the circuit when the button is depressed. 2. **Grounding/Support Pins:** Extra pins may be present for mechanical stability on the PCB to prevent the switch from shearing off during use. --- ## 4. Common Applications Due to its small footprint and side-actuation, the BS-16A-R is found in: * **Consumer Electronics:** Volume buttons on smartphones or tablets. * **Wearables:** Smartwatches and fitness trackers. * **Medical Devices:** Portable diagnostic tools. * **Automotive:** Key fobs and dashboard controls. ---