The **TCS-3F-R/BL** is a specific type of **Tactile Switch** (push-button) commonly used in consumer electronics, automotive controls, and industrial interfaces. The suffix "R/BL" typically denotes the illumination color or specific physical orientation (Red/Blue or Right-angle). --- ### 1. Key Technical Specifications Below are the general electronic and mechanical characteristics of the TCS-3F series: | Parameter | Typical Value | | :--- | :--- | | **Switch Type** | Momentary (Normally Open) | | **Contact Arrangement** | SPST (Single Pole Single Throw) | | **Current Rating** | 50mA | | **Voltage Rating** | 12V DC | | **Contact Resistance** | ≤ 100mΩ | | **Insulation Resistance** | ≥ 100MΩ (100V DC) | | **Operating Force** | 160gf to 250gf (Commonly) | | **Travel distance** | 0.25mm ± 0.1mm | --- ### 2. Physical Structure and Pinout The "3F" designation usually refers to a specific form factor, often involving an **illuminated** center. 1. **Switch Terminals:** Usually 2 or 4 pins dedicated to the tactile switching mechanism. 2. **LED Terminals:** 2 separate pins to power the internal LED (Red/Blue). 3. **Housing:** High-temperature plastic (LCP or Nylon) to withstand soldering. 4. **Actuator:** The button portion that the user presses, often translucent to allow light through. --- ### 3. Circuit Integration Example To use this part in a circuit, you must treat the switch and the LED as separate electrical components within the same housing. ```cpp // Example: Arduino logic for the TCS-3F-R/BL const int switchPin = 2; // Connected to Switch Pin const int ledPin = 3; // Connected to LED Pin via Resistor void setup() { pinMode(switchPin, INPUT_PULLUP); pinMode(ledPin, OUTPUT); } void loop() { int status = digitalRead(switchPin); if (status == LOW) { // Button Pressed digitalWrite(ledPin, HIGH); } else { digitalWrite(ledPin, LOW); } } ``` --- ### 4. Part Number Breakdown * **TCS:** Tactile Color Switch (Series Prefix). * **3F:** Frame/Size code (often 6x6mm or 12x12mm footprint). * **R/BL:** Color Indicators. Usually stands for **Red** and **Blue** (Dual-color LED or specific color options). ---