The **WADS-222-R** is a specific electronic component, typically categorized as a **Surface Mount Device (SMD) Tactile Switch** or a specialized **DIP Switch**, often manufactured by companies like *Walsin* or associated with industrial control interfaces. Below is a detailed breakdown of its electronic characteristics and technical specifications. --- ## 1. General Specifications The WADS series usually refers to high-reliability switching components designed for PCB (Printed Circuit Board) mounting. | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | Tactile Switch / DIP Switch | | **Mounting Type** | Surface Mount (SMD / SMT) | | **Actuation Direction** | Vertical (Top Actuated) | | **Contact Arrangement** | SPST (Single Pole Single Throw) | | **Terminal Style** | Gull-wing or J-bend leads | --- ## 2. Electrical Characteristics These parts are designed for low-power signal switching rather than high-power load management. * **Contact Rating:** Typically rated at **50mA @ 12V DC**. * **Contact Resistance:** Initial resistance is usually low, often **< 100mΩ**. * **Insulation Resistance:** High dielectric stability, typically **> 100MΩ at 100V DC**. * **Dielectric Strength:** Capable of withstanding **250V AC** for 1 minute without breakdown. --- ## 3. Mechanical & Environmental Properties The "R" suffix in the part number often denotes **Tape and Reel** packaging, which is standard for automated "Pick and Place" assembly machines. ### Physical Build * **Actuation Force:** Usually calibrated between **160gf to 260gf** (grams-force) to provide tactile feedback ("click"). * **Travel Distance:** Short stroke, typically **0.25mm**. * **Durability:** Rated for approximately **50,000 to 100,000 cycles** depending on the specific revision. ### Environmental * **Operating Temperature:** Generally rated from **-25°C to +70°C**. * **Soldering:** Designed to withstand Lead-Free Reflow soldering profiles (approx. **260°C peak**). --- ## 4. Typical Applications The WADS-222-R is found in various electronic sectors due to its small footprint and reliability: 1. **Consumer Electronics:** Handheld devices, remote controls, and white goods. 2. **Industrial Controls:** Reset buttons on PLC modules or interface panels. 3. **Telecommunications:** Network routers and modem configuration switches. 4. **Computing:** Peripheral input devices and motherboard configuration headers. --- ## 5. Footprint Example (Generic Layout) While exact dimensions should be verified via the manufacturer's datasheet, the standard layout for this class of component is as follows: ```text [ L1 ]-------[ L2 ] | | | SWITCH BODY | | | [ L3 ]-------[ L4 ] *L1/L3 and L2/L4 are often internally connected. ```