The **M5R26TPJ-R** is a specific surface-mount electronic component, typically identified as a **tactile switch** (or tact switch) manufactured by companies like **Mitsumi**. These parts are widely used in consumer electronics for user interface buttons. --- ### 1. Technical Specifications The M5R26TPJ-R belongs to a category of ultra-miniature switches designed for high-density mounting. | Feature | Description | | :--- | :--- | | **Component Type** | Tactile Switch (Push Button) | | **Mounting Style** | Surface Mount (SMD / SMT) | | **Circuit Type** | SPST (Single Pole Single Throw) | | **Operation Type** | Momentary (Normally Open) | | **Actuation Force** | Typically 1.6N to 2.4N (depending on specific sub-variant) | | **Travel Distance** | ~0.25mm | | **Packaging** | Tape & Reel (indicated by the "-R" suffix) | --- ### 2. Physical Characteristics The design is optimized for low profile and durability. * **Compact Footprint:** These switches usually have dimensions around 5.2mm x 5.2mm or smaller, making them ideal for mobile devices. * **J-Lead Terminals:** The "PJ" in the part number often refers to the **J-bend** lead shape, which saves PCB space compared to Gull-wing leads. * **Internal Dome:** Uses a stainless steel metal dome to provide the "click" tactile feedback and ensure electrical contact. --- ### 3. Common Applications Due to its reliability and small size, this part is found in: 1. **Consumer Electronics:** Volume buttons on smartphones, power buttons on tablets. 2. **Automotive:** Steering wheel controls or dashboard interfaces. 3. **Industrial:** Reset switches on PCB assemblies. 4. **Wearables:** Smartwatches and fitness trackers where space is at a premium. --- ### 4. Typical Wiring Diagram Since this is an SPST switch, the internal logic is very simple: ```text Terminal 1 o-------/ --------o Terminal 2 (Push to Close) ``` ---