The **F1245-MPT-R** is a specific part number for a high-performance **tactile switch** manufactured by **Diptronics**. These components are widely used in consumer electronics, industrial controls, and medical devices due to their reliability and compact form factor. --- ### 1. Technical Specifications The following table highlights the core electrical and mechanical characteristics of the F1245-MPT-R: | Parameter | Specification | | :--- | :--- | | **Switch Type** | Tactile Switch (Momentary) | | **Actuator Type** | Round Button (Top Actuated) | | **Contact Rating** | 50mA, 12V DC | | **Contact Resistance** | 100mΩ Max | | **Insulation Resistance** | 100MΩ Min. at 500V DC | | **Dielectric Strength** | 250V AC / 1 minute | | **Operating Force** | 160 ± 50 gf (standard variant) | | **Operating Life** | 100,000 cycles (minimum) | | **Mounting Type** | Surface Mount (SMT / SMD) | --- ### 2. Breakdown of the Part Number The alphanumeric code provides specific details about the physical build: * **F1245**: Refers to the series and specific dimensions (typically **12mm x 12mm** base). * **M**: Indicates the mounting style, usually referring to "Surface Mount" (SMT). * **PT**: Refers to the packaging type (often "Pocket Tape" or "Tape & Reel") and the Plating/Terminal style. * **R**: Generally signifies the specific **Height** of the actuator or a revision code. --- ### 3. Key Physical Features * **Sealing**: Most "F1245" models are designed to be dust-tight, ensuring longevity in dirty environments. * **Feedback**: Provides "tactile" or "clicky" feedback to the user, confirming the switch has been successfully depressed. * **Dimensions**: The 12mm footprint allows for a larger contact area and higher durability compared to smaller 6mm switches. --- ### 4. Typical Applications The F1245-MPT-R is commonly found in: 1. **Home Appliances:** Microwave control panels, washing machines. 2. **Industrial Equipment:** Reset buttons on PLCs or CNC interfaces. 3. **Peripherals:** High-duty cycle buttons for keyboards or specialized controllers. --- ### 5. Footprint Example (Generic SMT) While the exact CAD varies by manufacturer, the terminal layout follows a standard 4-pin SMT pattern: ```text [ Terminal 1 ] ---- [ Terminal 2 ] | | (Internal Switch Mechanism) | | [ Terminal 3 ] ---- [ Terminal 4 ] ``` *Note: Terminals 1-2 and 3-4 are usually internally connected.*