The **M8YV-655-R/BL** refers to a specific series of **industrial-grade waterproof LED indicators**, commonly manufactured by brands like **Marquardt** or specialized industrial signal component providers. These components are designed for panel mounting in environments requiring high durability. --- ### 1. Component Specifications The following table outlines the typical technical parameters for this part number: | Feature | Specification | | :--- | :--- | | **Mounting Hole** | 8mm Diameter | | **Input Voltage** | 24V DC (Standard for "655" series) | | **LED Color** | Blue (Indicated by "/BL") | | **Protection Class** | IP67 (Dust tight and waterproof) | | **Terminal Type** | Solder lugs or fast-on terminals | | **Body Material** | Chrome-plated brass or stainless steel | --- ### 2. Breakdown of the Part Number The alphanumeric code follows a specific logic used in industrial signaling: * **M8:** Indicates the mounting size (8mm thread). * **YV:** Often refers to the head shape (usually a prominent or recessed "Prominent" bezel). * **655:** A series identifier for the internal circuitry (built-in resistor for 24V operation). * **R:** Refers to a "Resistor" being integrated into the unit. * **BL:** Color code for **Blue**. --- ### 3. Electronic Characteristics Unlike a bare LED, the M8YV-655 series is a **composite electronic assembly**: 1. **Integrated Resistor:** It contains an internal current-limiting resistor. This allows you to connect it directly to a 24V power supply without burning out the LED. 2. **Polarity:** Being a DC component, it has a designated Anode (+) and Cathode (-). Reversing the polarity will prevent the light from illuminating but typically won't damage the unit due to the internal resistor's protection at low voltages. 3. **Current Consumption:** Typically draws between **15mA and 20mA**, making it energy efficient for control panels. --- ### 4. Circuit Implementation To use this part in a system, follow this basic schematic logic: ```yaml Power Source (24V DC) | +----[ + Terminal ] | [ M8YV-655-R/BL ] | +----[ - Terminal ] | Ground (0V) ``` ---