The **M5MV-14-R** is a high-performance, high-voltage mechanical relay part of the **M5 Series** manufactured by **Standex Electronics** (Meder). It is specifically designed as a reed relay for applications requiring high isolation and high switching voltages. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and physical characteristics of the M5MV-14-R: | Parameter | Specification | Units | | :--- | :--- | :--- | | **Contact Form** | Form A (Normally Open) | - | | **Coil Voltage** | 5 | VDC | | **Switching Voltage** | Up to 14,000 (14kV) | VDC / Peak AC | | **Breakdown Voltage** | Up to 15,000 (15kV) | VDC | | **Switching Current** | 1.0 (Max) | Amps | | **Carry Current** | 2.5 (Max) | Amps | | **Contact Resistance** | < 150 | mOhm | | **Isolation Resistance** | > 10^12 | Ohm | --- ### 2. Functional Components The M5MV-14-R consists of several specialized electronic and mechanical parts integrated into a single module: * **Vacuum Reed Switch:** The core component. It uses tungsten or rhodium-plated contacts sealed in a glass tube containing a vacuum or inert gas to prevent arcing at high voltages. * **Excitation Coil:** A copper wire winding that creates a magnetic field when 5V is applied, pulling the reed contacts together to close the circuit. * **Encapsulation (Potting):** The entire assembly is encapsulated in a high-dielectric epoxy resin. This provides the necessary insulation to prevent "flashover" between the high-voltage pins and the low-voltage coil pins. * **Magnetic Shielding:** Often includes internal shielding to prevent the magnetic field from interfering with adjacent components on a PCB. --- ### 3. Connection Pinout The relay typically features a split layout to maintain safe creepage and clearance distances: ```text Low Voltage Side (Control): - Pin 1: Coil (+) - Pin 2: Coil (-) High Voltage Side (Load): - Pin 3: Switch Contact A - Pin 4: Switch Contact B ``` --- ### 4. Common Applications Due to its ability to handle up to 14kV, this part is commonly used in: 1. **Automated Test Equipment (ATE):** High-pot testing and insulation resistance testing. 2. **Medical Electronics:** Defibrillators and laser power supplies. 3. **Mass Spectrometry:** Controlling high-voltage grids. 4. **Electric Vehicle (EV) Systems:** Testing isolation between the chassis and high-voltage battery packs.