The **UDS-1B-R** is a specific electronic component commonly used as a **DIP Switch** (Dual In-line Package). These are manual electromechanical switches used to configure settings on printed circuit boards (PCBs). Below is a breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications The "1B" typically refers to a single-position switch, and the "R" often denotes the packaging style (such as Reel) or a right-angle orientation, depending on the specific manufacturer (commonly **Nidec Copal** or **Omron**). | Parameter | Typical Value | | :--- | :--- | | **Type** | DIP Switch / Slide Switch | | **Number of Positions** | 1 Position | | **Switch Type** | SPST (Single Pole Single Throw) | | **Actuator Style** | Raised or Recessed Slide | | **Mounting Type** | Surface Mount (SMD) or Through-Hole | --- ### 2. Electrical Characteristics These parts are designed for low-power signal switching rather than high-power applications. * **Current Rating (Switching):** Usually around **25mA to 100mA** at 24V DC. * **Current Rating (Non-switching):** Up to **100mA** at 50V DC (Steady state). * **Contact Resistance:** Typically **50mΩ to 100mΩ** (initial maximum). * **Insulation Resistance:** Minimum **100MΩ** at 100V DC. * **Dielectric Strength:** **500V AC** for 1 minute. --- ### 3. Physical & Mechanical Properties The construction of the UDS-1B-R is designed to withstand industrial soldering processes and environmental stress. 1. **Materials:** * **Base/Cover:** High-temperature PPS (Polyphenylene Sulfide) or LCP (Liquid Crystal Polymer) to survive Reflow Soldering. * **Contacts:** Gold-plated over nickel (ensures long-term reliability and prevents oxidation). 2. **Actuation Force:** Generally between **1.0N to 8.0N** (approx. 100g to 800g). 3. **Durability:** Rated for approximately **1,000 to 2,000 cycles** (mechanical life). --- ### 4. Common Applications The UDS-1B-R is used in electronics where user-definable hardware settings are required without the need for software programming: * **Address Setting:** Setting IDs for devices on a communication bus (e.g., RS-485). * **Mode Selection:** Toggling between "Debug Mode" and "Normal Mode" on a controller. * **Configuration:** Adjusting frequency bands or gain settings on industrial sensors. --- ### 5. Circuit Representation The electronic symbol for the UDS-1B-R is a simple switch. In a logic circuit, it is usually paired with a **Pull-up** or **Pull-down** resistor to ensure a stable High or Low state. ```text VCC (3.3V / 5V) | [ R ] (Pull-up Resistor, e.g., 10k) | +------> Logic Output (To Microcontroller) | [ / ] (UDS-1B-R Switch) | GND ```