The **CPL-5-50TR-R** is a high-performance **Directional Coupler** manufactured by **Eaton (formerly Coiltronics/Bussmann)**. It is specifically designed for high-frequency RF (Radio Frequency) applications where signal monitoring or power measurement is required without interrupting the main signal path. --- ## 1. Technical Specifications Below is a summary of the core electronic characteristics of the CPL-5-50TR-R: | Parameter | Value / Range | | :--- | :--- | | **Component Type** | Directional Coupler | | **Frequency Range** | 500 MHz to 5000 MHz (5 GHz) | | **Coupling Value** | 50 dB (nominal) | | **Insertion Loss** | Very Low (< 0.2 dB typically) | | **Power Rating** | Up to 100W (CW) | | **Impedance** | 50 Ohms | | **Package Type** | Surface Mount (SMD) | | **Operating Temp** | -40°C to +85°C | --- ## 2. Key Electronic Features ### A. High Directivity This component is designed to distinguish between forward and reflected power. High directivity ensures that the sampled signal accurately represents the power flowing in one specific direction, which is critical for **SWR (Standing Wave Ratio)** measurements. ### B. Low Insertion Loss Because this part is often placed in the primary transmission line of a transmitter, it is engineered to have minimal "Insertion Loss." This means it consumes very little of the original signal's energy as it passes through the device. ### C. Frequency Versatility Covering the **500 MHz to 5 GHz** spectrum, it is suitable for various wireless standards, including: * Sub-6 GHz 5G applications. * Wi-Fi 6/6E. * LTE/4G cellular infrastructure. --- ## 3. Typical Application Circuit In an electronic system, the CPL-5-50TR-R is usually placed between a Power Amplifier (PA) and the Antenna. ```mermaid graph LR A[Power Amplifier] --> B[CPL-5-50TR-R / Input] B --> C[Antenna / Output] B -- 50dB Sample --> D[Power Detector/Controller] ``` 1. **Input Port:** Receives the high-power signal from the source. 2. **Output Port:** Passes the signal to the load (antenna) with minimal loss. 3. **Coupled Port:** Provides a signal that is 50 dB lower than the input, allowing low-power microcontrollers or RF detectors to monitor the "health" of the transmission. --- ## 4. Physical Layout and Handling * **Small Footprint:** Designed for modern, compact PCB layouts. * **RoHS Compliant:** The "-R" suffix in the part number indicates that the component is Lead-Free and compliant with RoHS standards. * **Tape and Reel:** The "TR" suffix indicates it is packaged for automated pick-and-place assembly machines.