The **STB01-R-4** is a specific electronic component typically categorized as a **Surface Mount (SMT) Cable Tie Mount** or a **Soldering Terminal Block**. These parts are designed to be mounted onto a Printed Circuit Board (PCB) to provide a mechanical anchoring point or an electrical connection point. Below is a detailed breakdown of its electronic and mechanical specifications. --- ### 1. General Specifications The STB series is commonly produced by manufacturers like **Mac8** (a Japanese company specializing in hardware for PCBs). The "R-4" suffix usually denotes the specific sizing or packaging (Reel). | Feature | Description | | :--- | :--- | | **Component Type** | SMT Spacer / SMT Terminal | | **Material** | Brass (usually Sn-plated or Au-plated) | | **Mounting Type** | Surface Mount Technology (SMT) | | **Function** | Cable management anchoring or wire attachment | | **Operating Temp** | -40°C to +125°C (typical for industrial grade) | --- ### 2. Key Electronic Features #### A. Conductivity and Plating While these parts are often used for mechanical purposes (like holding a zip-tie), they are made of conductive brass. * **Base Material:** Brass (C3604 or similar). * **Plating:** Typically Tin (Sn) over Nickel (Ni) to ensure high solderability and prevent oxidation. * **Current Rating:** If used as a terminal, they can often handle high currents (up to 20A-30A depending on the solder joint surface area). #### B. Solderability The part is designed for **Reflow Soldering**. Because it is a surface-mount part, it eliminates the need for manual through-hole soldering, which speeds up the PCB assembly process using Pick-and-Place machines. --- ### 3. Physical Dimensions & Mechanical Design The "4" in the part number often refers to a specific dimension (e.g., 4mm width or height). | Attribute | Typical Value | | :--- | :--- | | **Body Shape** | Square or Rectangular with a hollow center | | **Hole Diameter** | Optimized for small cable ties or wire pass-through | | **Packaging** | Tape and Reel (TR) for automated assembly | --- ### 4. Common Applications 1. **Cable Management:** Securing internal wiring inside a device without drilling holes in the chassis. 2. **Test Points:** Used as a robust hook point for oscilloscope probes. 3. **Grounding:** Providing a solderable point to ground a wire or a shield to the PCB plane. 4. **Strain Relief:** Reducing the mechanical stress on delicate solder joints by anchoring the wire nearby. --- ### 5. Implementation Example If you were to include this in a PCB design, you would treat it as a single-pad footprint in your EDA software (like Altium or KiCad). ```cpp // Example: PCB Footprint Metadata Part_Number: STB01-R-4 Land_Pattern: SMT_PAD_4.0mm_x_3.0mm Solder_Paste: Required (Stencil thickness 0.12mm+) ```