The **R10S-R1X2DC** is a specific part number for a widely used electro-mechanical relay, typically manufactured by **TE Connectivity (formerly P&B / Potter & Brumfield)**. It is part of the R10 series, known for its versatility in low-signal and general-purpose switching applications. --- ## Technical Specifications Breakdown The part number follows a specific nomenclature that defines its electronic characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Series** | R10 | Low profile, multi-contact cradle relay. | | **Sensitivity** | S | Super-sensitive (usually 40mW to 100mW per pole). | | **Mounting/Terminal** | R1 | Printed Circuit Board (PCB) terminals. | | **Contact Arrangement** | X | 2 Form C contacts (DPDT - Double Pole Double Throw). | | **Coil Voltage/Type** | 2DC | 2V DC Nominal Coil Voltage. | --- ### 1. Coil Characteristics The "S" designation indicates a **high-sensitivity coil**. This means the relay requires very little power to actuate compared to standard industrial relays. * **Coil Resistance:** Typically ranges from 50 to 500 Ohms depending on the specific manufacturing batch, but tuned for low-power operation. * **Nominal Power:** Designed to operate on milliwatts, making it suitable for transistor-driven circuits. ### 2. Contact System (DPDT) The "X" designation refers to the **2 Form C** configuration: * **Dual Pole:** It can switch two independent circuits simultaneously. * **Double Throw:** Each pole has a Common (COM), Normally Open (NO), and Normally Closed (NC) contact. * **Material:** Often gold-plated silver-cadmium oxide or similar alloys to ensure low contact resistance even at low signal levels. ### 3. Physical Form Factor * **Cradle Design:** The internal mechanism uses a "cradle" style armature, which allows for a high number of contacts in a relatively small footprint. * **Enclosure:** Usually housed in a transparent or opaque dust cover to protect the delicate moving parts. * **Terminals:** Solder pins designed for direct integration into a PCB. --- ## Common Applications Due to its high sensitivity and DPDT configuration, the R10S-R1X2DC is commonly found in: 1. **Telecommunications:** Signal routing and line switching. 2. **Audio Equipment:** Switching audio paths without introducing significant noise. 3. **Test & Measurement:** Used in automated test equipment (ATE) where low power consumption is critical. 4. **Legacy Control Systems:** Replacing older logic circuits that operate on low DC voltages. ---