The **JFX1-3B-R** is a specific electronic component, primarily identified as a **tactile switch** or a small-form-factor electromechanical switch. These are commonly used in consumer electronics, automotive interfaces, and industrial controls. --- ### 1. Technical Specifications Below are the typical specifications for the JFX series tactile switches: | Parameter | Specification | | :--- | :--- | | **Type** | Tactile Switch (Momentary) | | **Mounting Type** | Surface Mount (SMD / SMT) | | **Actuation Force** | Typically 160gf to 250gf | | **Operating Life** | 100,000 to 500,000 cycles | | **Contact Rating** | 50mA @ 12VDC | | **Insulation Resistance** | 100 MΩ min. | | **Operating Temperature** | -25°C to +70°C | --- ### 2. Physical Characteristics * **Dimensions:** Usually features a compact footprint (e.g., 3x3mm or 4x4mm), making it ideal for high-density PCB designs. * **Actuator Style:** Often features a flush or slightly raised button (stem) depending on the specific "3B" sub-designation. * **RoHS Compliance:** The **"-R"** suffix typically indicates that the part is **RoHS Compliant**, meaning it is free from hazardous substances like lead. --- ### 3. Internal Construction The "Electronic Parts" within this assembly consist of: 1. **Contact Dome:** A metal snap-dome that provides the "click" feel (tactile feedback) and bridges the electrical circuit when pressed. 2. **Terminals:** Silver-plated or gold-plated copper alloy pins for soldering to the PCB. 3. **Base/Housing:** High-temperature thermoplastic (LCP or Nylon) capable of withstanding reflow soldering temperatures. 4. **Cover:** A metal or plastic shield that holds the internal components in place. --- ### 4. Typical Applications * **Handheld Devices:** Remote controls, calculators, and medical instruments. * **Computing:** Mouse buttons, reset switches on motherboards. * **Automotive:** Key fobs and dashboard buttons. ---