The **JFR2-7M1-R** is a specific part number typically associated with high-frequency, surface-mount **RF (Radio Frequency) connectors**, often within the family of micro-miniature coaxial connectors (similar to U.FL or MHF series). Below is a detailed breakdown of its electronic specifications and technical characteristics. --- ### 1. Technical Specifications This component is designed for space-constrained applications requiring stable signal transmission at high frequencies. | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | RF Coaxial Connector / Receptacle | | **Mounting Type** | Surface Mount (SMT) | | **Frequency Range** | DC to 6 GHz (standard) | | **Impedance** | 50 Ohms | | **VSWR** | 1.3 Max (0 to 3 GHz), 1.5 Max (3 to 6 GHz) | | **Mating Height** | ~1.2mm to 2.5mm (depending on plug) | | **Operating Temperature** | -40°C to +85°C | --- ### 2. Physical Construction The "R" in the suffix usually denotes "Reel" packaging for automated pick-and-place assembly. * **Housing:** High-temperature thermoplastic (LCP) capable of withstanding reflow soldering. * **Contact Material:** Copper alloy with Gold (Au) plating to ensure low contact resistance and prevent oxidation. * **Shell/Shield:** Phosphorus bronze with Silver or Gold plating for EMI shielding and grounding. --- ### 3. Application Use Cases The JFR2 series is commonly found in mobile and wireless infrastructure where PCB real estate is at a premium. * **Wireless Modules:** Wi-Fi, Bluetooth, and ZigBee modules. * **Telecommunications:** 4G/5G LTE internal antenna connections in smartphones or tablets. * **IoT Devices:** Smart home sensors and wearable technology. * **GPS/GNSS:** Connecting external antennas to navigation chipsets. --- ### 4. PCB Layout Considerations When designing a PCB for the JFR2-7M1-R, engineers must follow specific footprints to maintain signal integrity: ```markdown 1. Signal Pad: Central pad for the RF signal. 2. Ground Pads: Two large flanking pads for mechanical stability and return path. 3. Solder Mask: Precise clearance is required to avoid shorting the signal to the shield. 4. Transmission Line: The PCB trace leading to the connector must be calculated for 50-ohm controlled impedance. ``` --- ### 5. Handling and Mating RF connectors of this size are fragile. * **Extraction:** Should be performed using a specialized extraction tool to avoid peeling the pads off the PCB. * **Mating Cycles:** These are typically rated for **30 to 50 mating cycles**. They are intended for internal assembly rather than frequent consumer plugging/unplugging. ---