The **FRT-41-R/Q** is a specific series of miniature electromechanical relays, commonly manufactured by brands like **Forward Industrial Co.** or **Shenler**. These components are widely used in telecommunications, security systems, and office automation due to their small footprint and high reliability. --- ### 1. Key Technical Specifications The "R/Q" suffix usually denotes specific pin configurations or sealing types (e.g., Washable vs. Flux-proof). Below are the typical technical parameters: | Parameter | Specification | | :--- | :--- | | **Contact Form** | 1 Form C (SPDT) or 1 Form A (SPST) | | **Contact Material** | Silver Alloy (often Gold-clad) | | **Rated Load (Resistive)** | 1A at 24VDC / 0.5A at 125VAC | | **Max Switching Voltage** | 60VDC / 125VAC | | **Max Switching Power** | 30W / 62.5VA | | **Coil Voltage Options** | 3V, 5V, 6V, 9V, 12V, 24V DC | | **Coil Power Consumption** | Approx. 150mW to 200mW | --- ### 2. Physical Characteristics & Pinout The FRT-41 series is known for its **DIP (Dual In-line Package)** style, making it compatible with standard breadboards and PCB layouts. * **Size:** Extremely compact, roughly $12.5 \times 7.5 \times 10$ mm. * **Sealing:** * **Q:** Usually represents a "Sealed" or "Washable" type, allowing the PCB to be cleaned after soldering without damaging the contacts. * **R:** Often denotes a standard "Flux-proof" construction. * **Terminal Layout:** Standard 6-pin or 5-pin configuration depending on the specific model variation. --- ### 3. Functional Components The relay operates through three primary internal electronic sections: 1. **The Coil:** A copper wire winding that creates a magnetic field when DC current passes through it. 2. **The Armature:** A moving metal piece attracted by the coil's magnetism. 3. **The Contacts:** The switching mechanism. Because they are often gold-clad, they are excellent for "low-level" signals (switching very small currents without oxidation interference). --- ### 4. Common Applications * **Telecommunication:** Switching telephone lines or signal routing. * **Security Systems:** Activating alarms or sensors. * **Computer Peripherals:** Controlling low-power I/O ports. * **Medical Equipment:** Isolated signal switching. ---