The **M7R68FCJ-R** is a specific part number typically associated with automotive-grade electronic components, specifically **Relays** manufactured by companies like **Fujitsu** (or distributed through partners like Takamisawa). Below is a detailed breakdown of its electronic characteristics and specifications. --- ## 1. Component Overview The M7R68FCJ-R belongs to the category of **Electromechanical Relays**. It is designed for high-reliability environments, primarily for switching heavy electrical loads in automotive systems. ### General Specifications | Feature | Description | | :--- | :--- | | **Category** | Power Relay | | **Application** | Automotive (Wiper control, Lamp control, Power windows) | | **Mounting Type** | PCB (Printed Circuit Board) Through-Hole | | **Contact Arrangement** | Form C (SPDT - Single Pole Double Throw) | | **Termination** | Solder Pins | --- ## 2. Electrical Characteristics The performance of the M7R68FCJ-R is defined by its ability to handle surge currents and maintain low contact resistance. ### Coil Specifications * **Nominal Voltage:** Typically **12V DC** (Standard for vehicle systems). * **Coil Resistance:** Optimized for low power consumption while maintaining strong magnetic force for switching. ### Contact Ratings * **Switching Current:** Generally rated for **20A to 30A** (depending on the specific load type—inductive vs. resistive). * **Maximum Voltage:** Up to 16V DC for continuous operation; designed to handle transient spikes common in alternator-driven systems. * **Contact Material:** Usually Silver Tin Oxide ($AgSnO_2$), which provides excellent resistance to welding and material transfer during high-current switching. --- ## 3. Physical & Environmental Construction Since this is an automotive part, the "FCJ" and "R" suffixes often denote specific sealing and packaging standards. ### Environmental Specs * **Operating Temperature:** $-40^\circ\text{C}$ to $+125^\circ\text{C}$. * **Sealing:** Plastic sealed (Washable), protecting the internal contacts from dust, moisture, and flux during the soldering process. * **Vibration Resistance:** High tolerance to mechanical shock, preventing "contact chatter" while the vehicle is in motion. ### Pinout Configuration The "Form C" arrangement means the relay has: 1. Two pins for the **Coil**. 2. One **Common (COM)** pin. 3. One **Normally Closed (NC)** pin. 4. One **Normally Open (NO)** pin. --- ## 4. Typical Applications The M7R series is frequently found in **Body Control Modules (BCM)** and **Fuse Boxes** for: * Intermittent Wiper Control. * Central Locking Systems. * Seat Adjustment Motors. * Heated Mirrors/Windows. ---