The **F2VF-AZ-R** is an automotive-grade power relay manufactured by **Fujitsu**. It is part of the F2 series, specifically designed for high-current applications within vehicle systems, such as engine control, power steering, and lighting modules. --- ### 1. Key Technical Specifications The following table outlines the core electronic and mechanical parameters of the F2VF-AZ-R: | Parameter | Specification | | :--- | :--- | | **Contact Arrangement** | 1 Form A (SPST-NO) | | **Nominal Coil Voltage** | 12V DC | | **Switching Current (Max)** | 35A (Continuous) / 100A (Inrush) | | **Coil Resistance** | ~114 Ω | | **Operating Temperature** | -40°C to +125°C | | **Contact Material** | Silver Tin Oxide (AgSnO2) | | **Mounting Type** | PCB (Through-hole) | --- ### 2. Major Electronic Components & Construction #### A. The Coil System The heart of the relay is an electromagnetic coil. When a 12V signal is applied, it generates a magnetic field that moves the armature. The "AZ" designation often refers to a specific coil sensitivity or high-temperature insulation class suitable for under-the-hood environments. #### B. Contact System (Silver Tin Oxide) The contacts are made of **AgSnO2**. This material is used because: * It resists "welding" during high inrush currents. * It provides high reliability over thousands of switching cycles. * It handles the heat generated by 35A continuous loads without significant degradation. #### C. Environmental Sealing The **"-R"** suffix typically denotes a "flux-tight" or plastic-sealed construction. This prevents solder flux or environmental contaminants (like moisture and dust) from entering the relay housing during the manufacturing process or during the vehicle's lifespan. --- ### 3. Common Applications Due to its high current handling and compact PCB footprint, it is frequently found in: * **ABS Control Units:** Managing pump motors. * **Power Windows & Seats:** Controlling bidirectional motors. * **Cooling Fans:** Switching high-power radiator fan motors. * **HID/LED Lighting:** Managing the initial high-voltage surge. ---