Based on technical specifications for electronic components, **263-R** typically refers to a specific type of **Miniature Slide Switch** or a specific **Carbon Film Resistor** series, depending on the manufacturer (most commonly associated with brands like *CW Industries* or *Mountain Switch*). --- ## 1. Component Overview: 263-R Slide Switch The most common electronic part identified as 263-R is a sub-miniature slide switch used in PCB (Printed Circuit Board) applications. ### Technical Specifications | Feature | Specification | | :--- | :--- | | **Circuit Configuration** | SPDT (Single Pole Double Throw) | | **Switch Function** | ON-ON (2-Position) | | **Contact Rating** | 0.5A @ 125V AC / 0.2A @ 12V DC | | **Mounting Type** | Through-Hole (Right Angle or Vertical) | | **Contact Material** | Copper Alloy, Silver or Gold Plated | | **Operating Temperature** | -20°C to +70°C | --- ## 2. Internal Construction & Materials The reliability of the 263-R series comes from its simple mechanical design: * **Actuator:** Usually made of Nylon or glass-filled Polyester (PBT). * **Housing:** Stainless steel or tin-plated brass to prevent EMI interference. * **Terminal Seal:** Often epoxy-sealed at the base to prevent flux contamination during soldering. * **Contacts:** "Wiping action" design which cleans the contact surface every time the switch is toggled. --- ## 3. Common Applications These parts are designed for low-power signal switching in compact devices: 1. **Consumer Electronics:** Power on/off switches for portable toys or handheld devices. 2. **Instrumentation:** Mode selection (e.g., switching between Volts and Ohms on a multimeter). 3. **Telecommunications:** Channel selection or reset triggers on networking hardware. 4. **PC Peripherals:** DPI switches on mice or profile toggles on keyboards. --- ## 4. Alternative Interpretation: Resistor Series If "263-R" is found in a circuit diagram as a value rather than a part number, it typically signifies: * **Resistance Value:** 263 Ohms. * **Tolerance:** The "R" acts as a decimal point or indicates a ±5% tolerance in older coding systems. --- ### Comparison: 263-R vs. Standard Slide Switches | Feature | 263-R (Miniature) | Standard Slide Switch | | :--- | :--- | :--- | | **Size** | Small (approx 10mm x 4mm) | Large (approx 20mm+) | | **Current Handling** | Low (mA range) | High (3A to 10A) | | **Precision** | High | Moderate |