The **WJFX-A02-R** is an electronic component primarily classified as a **High-Frequency Connector** or **RF Coaxial Connector**, specifically belonging to the **Mini-W.FL / IPEX** series. These connectors are designed for compact electronic devices requiring wireless connectivity. --- ### 1. Technical Specifications The following table outlines the key electrical and physical characteristics typical for this part number: | Parameter | Specification | | :--- | :--- | | **Connector Type** | SMT Receptacle (Male Pin) | | **Frequency Range** | DC to 6 GHz | | **Impedance** | 50 Ohms (Nominal) | | **VSWR** | 1.3 Max (0 to 3GHz) / 1.5 Max (3 to 6GHz) | | **Mating Height** | ~1.2mm to 1.5mm (Ultra Low Profile) | | **Contact Material** | Phosphor Bronze with Gold Plating | | **Mounting Type** | Surface Mount (SMD) | --- ### 2. Key Electronic Features * **Miniaturization:** The "A02" designation often refers to the specific generation or size profile, optimized for extremely thin PCB designs where space is at a premium. * **Gold Plating:** To ensure high conductivity and prevent oxidation over time, the center contact and outer shell are typically gold-plated. * **High-Frequency Performance:** Designed to handle signals for Wi-Fi (2.4GHz/5GHz), Bluetooth, and GPS without significant signal loss. * **Durability:** While small, these connectors are rated for approximately 20 to 30 mating cycles. --- ### 3. Common Applications The WJFX-A02-R is commonly found in the following electronic hardware: 1. **Mobile Devices:** Smartphones and tablets for internal antenna connections. 2. **Laptops:** Connecting Wi-Fi/Bluetooth M.2 cards to the integrated screen antennas. 3. **IoT Modules:** Narrowband-IoT (NB-IoT) or LoRa modules that require an external antenna interface. 4. **Drones:** For FPV (First Person View) video transmission and RC control links. --- ### 4. Installation Notes * **Soldering:** Being an SMT (Surface Mount Technology) component, it is usually applied via solder paste and a reflow oven. Manual soldering is difficult due to its tiny footprint. * **Mating:** Requires a compatible female plug (usually on a micro-coaxial cable assembly). Care must be taken during insertion to avoid bending the center pin.