The **113N-R** typically refers to a specific series of **Electromagnetic Relays** or **General Purpose Relays**, most notably those manufactured by companies like **Sanyou** or similar relay producers. These components are used to control a high-power circuit with a low-power signal. --- ## 1. Component Overview The "113N" series is a sub-miniature power relay designed for PCB (Printed Circuit Board) mounting. It is widely used in household appliances and industrial automation due to its compact size and high switching capacity. ### Key Specifications | Feature | Typical Specification | | :--- | :--- | | **Contact Form** | 1 Form A (SPST-NO) or 1 Form C (SPDT) | | **Contact Material** | AgSnO₂ (Silver Tin Oxide) or AgNi (Silver Nickel) | | **Max Switching Voltage** | 250VAC / 30VDC | | **Max Switching Current** | 5A to 12A (Depending on specific model suffix) | | **Coil Voltage (DC)** | 3V, 5V, 6V, 9V, 12V, 24V, 48V | | **Mounting Type** | Through-hole (PCB) | --- ## 2. Part Number Breakdown While naming conventions can vary slightly by manufacturer, the code usually breaks down as follows: 1. **113**: The series identifier (physical dimensions and basic design). 2. **N**: High sensitivity version (often indicates a lower power consumption coil). 3. **R**: Usually denotes **RoHS Compliance** or specific packaging (like "Reel" or "Reinforced" insulation). --- ## 3. Internal Construction and Working The device consists of three main sections: 1. **The Coil**: When current flows through the coil, it creates a magnetic field. 2. **The Armature**: A moving piece of metal attracted by the magnetic field. 3. **The Contacts**: The physical "switch" points that open or close the secondary circuit. ### Pinout Configuration (Standard 113N) ```text Bottom View (Typical) +-------------------+ | (Coil) (Coil) | | O O | | | | (COM) | | O | | | | (NC) (NO) | | O O | +-------------------+ Note: NC (Normally Closed) is only present in 1 Form C versions. ``` --- ## 4. Common Applications * **Home Appliances**: Coffee makers, air conditioners, and microwave ovens. * **Office Automation**: Photocopiers and printers. * **Industrial**: PLC output modules and temperature controllers. * **Automotive**: Auxiliary power control for non-critical systems. ---