The string **EMPCBSMAFSTJBHT** is a highly specific product identifier (SKU) for a high-frequency RF (Radio Frequency) connector. This part is typically used to bridge a Printed Circuit Board (PCB) to a coaxial cable or external antenna. Below is a breakdown of the electronic components and technical specifications represented by this part number. --- ### Part Component Breakdown This part is a **Surface Mount (SMT) Jack** designed for high-performance communication systems. | Component Code | Technical Meaning | Description | | :--- | :--- | :--- | | **EM** | Edge Mount / End Launch | Designed to be mounted on the edge of the PCB. | | **PCB** | Printed Circuit Board | Indicates the mounting interface. | | **SMA** | Sub-Miniature Version A | The standard RF connector interface (threaded). | | **F** | Female | The connector has a socket (receptacle) rather than a pin. | | **ST** | Straight | The orientation of the connector body is linear. | | **J** | Jack | Refers to the connector gender/type (Receptacle). | | **BHT** | Bulkhead / Through-hole | Indicates it may include a nut/washer for panel mounting. | --- ### Key Technical Specifications Most connectors following this naming convention share these electrical and mechanical characteristics: #### 1. Electrical Performance * **Impedance:** 50 Ohms (Standard for RF communications). * **Frequency Range:** Typically 0 to 18 GHz (depending on the grade of the SMA). * **VSRW (Voltage Standing Wave Ratio):** Usually < 1.3 to ensure minimal signal reflection. #### 2. Physical Construction * **Body Material:** Often Brass or Stainless Steel with Gold or Nickel plating. * **Insulator:** PTFE (Teflon) for high-temperature resistance and low dielectric loss. * **Contact Pin:** Beryllium Copper with Gold plating for maximum conductivity. --- ### Application Usage These parts are critical in modern electronics involving wireless signals. * **Telecommunications:** Base stations and cellular signal routing. * **IoT Devices:** Connecting external Wi-Fi or LoRa antennas to a small PCB. * **Test & Measurement:** Used on evaluation boards to connect to oscilloscopes or spectrum analyzers. * **Aerospace:** High-reliability signal transmission in tight spaces. --- ### Comparison: SMT vs. Through-Hole | Feature | SMT (Surface Mount) | Through-Hole (TH) | | :--- | :--- | :--- | | **Installation** | Solder pads on the surface | Pins go through PCB holes | | **Space** | Saves board real estate | Consumes more space | | **Strength** | Moderate | High (better for heavy cables) | | **Assembly** | Automated (Pick and Place) | Often requires manual soldering |