The **TCS-7B-R/CE** is a specialized electronic component, typically identified as a **high-frequency, surface-mount (SMD) coaxial switch** or a **RF connector interface** used in telecommunications and signal testing. These parts are designed for high-density layouts where signal integrity and minimal loss are critical. --- ### 1. Key Technical Specifications The "R/CE" suffix often denotes specific mechanical variations (like orientation or environmental ratings). Below are the typical electronic characteristics for this series: | Parameter | Typical Value | | :--- | :--- | | **Frequency Range** | DC to 6 GHz (Standard) | | **Impedance** | 50 Ohms | | **Insertion Loss** | < 0.2 dB (at 2 GHz) | | **Voltage Rating** | 250V AC (rms) | | **Durability** | 500 to 5,000 mating cycles | | **Operating Temperature** | -40°C to +85°C | --- ### 2. Internal Electronic Architecture The TCS-7B series operates as a **Normally Closed (NC)** mechanical switch. * **Signal Path:** When no probe is inserted, the internal spring contact bridges the input and output terminals, allowing the signal to pass through the PCB. * **Switching Mechanism:** Upon insertion of a manual probe or automated test head, the internal contact is physically displaced, breaking the internal circuit and rerouting the signal to the test equipment. * **Shielding:** The outer shell is grounded to the PCB plane to provide a Faraday cage effect, minimizing Electromagnetic Interference (EMI). --- ### 3. Pinout and PCB Layout The part typically features a 3-pin or 5-pin configuration for SMD mounting: ```text PCB Footprint Top View (Conceptual): [ GND ] [ SIG ] [ GND ] | | | +--------+--------+ | [ Switch Pad ] ``` 1. **Signal In/Out:** The central pin carries the RF signal. 2. **Ground (GND):** The side wings or perimeter pads provide mechanical stability and electrical grounding. 3. **Switch Terminal:** The pad that becomes active only when the probe is engaged. --- ### 4. Applications The TCS-7B-R/CE is found in the following electronic environments: * **Mobile Handsets:** For antenna tuning and RF path testing. * **WLAN/Bluetooth Modules:** Quality control during the manufacturing stage. * **IoT Devices:** Used as a point of entry for measuring Transmit (Tx) and Receive (Rx) power levels. --- ### 5. Part Number Breakdown (Typical) * **TCS:** Series identifier (RF Switch/Connector). * **7B:** Physical size/generation (Small form factor). * **R:** Reeled packaging (for automated pick-and-place machines). * **CE:** Compliance/Environmental marking (often indicating Lead-Free/RoHS or specific plating).