The part number **R10-R1W1DC** refers to a specific configuration of an **electromechanical relay** manufactured by **TE Connectivity (formerly P&B / Potter & Brumfield)**. The R10 series is a highly versatile, multi-pole relay commonly used in industrial control, testing equipment, and legacy communications hardware. --- ### 1. Part Number Breakdown To understand the electronic capabilities, we must decode the alphanumeric suffix: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **R10** | Series Name | General purpose, multi-pole electromechanical relay. | | **-R** | Mounting/Terminal | Solder terminals (plug-in or PC board styles vary by subtype). | | **1** | Contact Arrangement | **1 Form C (SPDT)**: Single Pole, Double Throw. | | **W** | Contact Rating | **Low Level / Dry Circuit**: Usually indicates gold-flashed contacts. | | **1** | Coil Sensitivity | **Sensitive Coil**: Typically requires less power (approx. 125mW - 500mW). | | **DC** | Current Type | Operated by **Direct Current**. | --- ### 2. Key Technical Specifications Based on the standard R10 family architecture, here are the general specifications for this specific variant: #### A. Contact Data * **Configuration:** SPDT (1 Form C). * **Material:** Often Gold-flashed Silver or Gold-plated, optimized for switching low-level signals without oxidation issues. * **Max Switching Voltage:** 120VAC / 28VDC. #### B. Coil Data * **Input Type:** DC. * **Sensitivity:** The "1" designation indicates a sensitive coil, which is ideal for circuits where the driving transistor or IC has limited current output. * **Resistance:** Varies depending on the specific voltage rating (e.g., 5V, 12V, 24V), but usually higher resistance than "Standard" R10 coils. #### C. Physical Design * **Housing:** Clear polycarbonate "dust cover." * **Mounting:** Can be plugged into a socket or soldered directly to a PCB. * **Life Expectancy:** Roughly 100,000 operations at full load; up to 10 million operations mechanically. --- ### 3. Common Applications Due to the **"W" (Low Level)** contact rating and the **Sensitive Coil**, this relay is frequently found in: 1. **Audio Switching:** Switching signals without introducing "pop" or resistance noise. 2. **Instrumentation:** Routing low-voltage sensor data. 3. **Logic Interfacing:** Allowing a low-power microcontroller circuit to trigger a larger electrical load. 4. **Legacy Telecommunications:** Used extensively in older switching stations. --- ### 4. Equivalent & Replacement Identification If you are looking for a replacement, ensure the **Coil Voltage** (not explicitly in the R1-W1-DC string, but usually printed on the side) matches your system (e.g., 12VDC vs 24VDC).