The **W2CE-111-R2** is a specific part number belonging to the **W2CE series** of high-performance connectors, typically manufactured by companies like **Winchester Interconnect** (formerly under the Winchester/Cinch brand). These parts are specialized for radio frequency (RF) and microwave applications. --- ## Technical Specifications The "R2" suffix generally denotes a specific revision or plating standard (often RoHS compliance). Below are the core electronic and mechanical characteristics: | Property | Description | | :--- | :--- | | **Component Type** | RF Coaxial Connector | | **Interface Style** | SMP (Sub-Miniature Push-on) | | **Mounting Type** | Edge Mount / Surface Mount (PCB) | | **Frequency Range** | DC to 40 GHz (Application dependent) | | **Impedance** | 50 Ohms | | **Body Material** | Stainless Steel or Beryllium Copper | | **Plating** | Gold over Nickel | --- ## Key Electronic Characteristics ### 1. High-Frequency Performance The W2CE series is designed to handle extremely high frequencies (Microwave/Millimeter-wave). The internal geometry is precision-machined to minimize **Insertion Loss** and maintain a low **VSWR** (Voltage Standing Wave Ratio). ### 2. Signal Integrity As an **edge-mount connector**, it is engineered to transition signals from a coaxial cable or test fixture to a PCB trace with minimal impedance mismatch. This is critical in high-speed digital and RF testing where signal reflections can ruin data integrity. ### 3. SMP Interface Features The SMP interface (per MIL-STD-348) utilizes a "push-on" design. Depending on the internal "detent" (the force required to engage/disengage), it allows for: * **Full Detent:** Secure locking for high-vibration environments. * **Limited Detent/Smooth Bore:** Easier connection for modular testing. --- ## Common Applications * **Test and Measurement:** Used in high-speed oscilloscopes and network analyzers. * **Aerospace & Defense:** Radar systems and satellite communication. * **Telecommunications:** 5G infrastructure and high-speed backplanes. --- ## Design Considerations When integrating the W2CE-111-R2 into a design, engineers must focus on: * **PCB Landing Pattern:** The footprint must be precisely aligned with the board thickness to ensure the center pin contacts the trace correctly. * **Dielectric Material:** Use high-frequency laminates (like Rogers or Megtron) to match the connector's performance. * **Solder Reflow:** Ensure the gold plating is handled according to J-STD-001 standards to avoid gold embrittlement in the solder joint.