## PTS645VL31 Electronic Component Overview The **PTS645VL31** is a specific model within the **PTS645 series** of tactile switches manufactured by **C&K Components**. It is widely used in consumer electronics, instrumentation, and computing equipment due to its reliability and standard footprint. --- ### Technical Specifications | Feature | Specification | | :--- | :--- | | **Switch Type** | Tactile Switch (Momentary) | | **Actuator Style** | Round, Vertical (Top Actuated) | | **Actuation Force** | 130 gf (grams-force) | | **Actuator Height** | 3.1 mm | | **Contact Rating** | 50 mA @ 12 VDC | | **Operating Life** | 100,000 cycles | | **Mounting Type** | Through-Hole (THT) | | **Terminal Type** | PC Pins | | **Dimensions** | 6.0 mm x 6.0 mm (Base) | --- ### Key Electronic & Physical Characteristics 1. **Momentary Action**: This is an "SPST-NO" (Single Pole Single Throw, Normally Open) switch. The electrical circuit is only closed while the button is being physically pressed. 2. **Tactile Feedback**: The "PTS" series is designed to provide a distinct "click" feel and audible sound, confirming to the user that the switch has been successfully actuated. 3. **Low Profile Design**: With a 3.1 mm height, it is ideal for compact PCB designs where vertical space is limited but a physical button is required. 4. **Silver Plated Contacts**: The internal contacts are typically silver-plated, which ensures high conductivity and reduces contact resistance, though it limits the switch to low-power signal applications. --- ### Part Number Breakdown (PTS645 Series) To understand exactly what the "VL31" suffix represents: * **PTS645**: Series name (6x6mm Tactile Switch). * **V**: Vertical orientation (Top Actuated). * **L**: Low Actuation Force (130 grams). * **31**: 3.1 mm Actuator height. --- ### Common Applications * **Consumer Electronics**: Remote controls, small appliances, and toys. * **Industrial**: Control panels and reset buttons. * **Computing**: Peripherals and power buttons.