### STB03-R-2 Electronic Component Overview The **STB03-R-2** typically refers to a **Pre-Printed Cable Marker** (Snap-On type) manufactured by companies like **TE Connectivity (Raychem)** or **HellermannTyton**. It is an essential component used in electrical and electronic assembly for wire identification. Below is a breakdown of its technical characteristics and electronic application. --- ### Technical Specifications | Feature | Description | | :--- | :--- | | **Component Type** | Snap-On Cable Marker | | **Marker Legend** | Number "2" | | **Material** | Nylon 66 (Polyamide) | | **Wire Diameter Range** | Usually 2.0mm to 3.0mm (Size 03) | | **Temperature Range** | -40°C to +105°C | | **Flammability Rating** | UL 94 V-2 | | **Color** | White marker with Black legend (standard) | --- ### Electronic and Industrial Application The STB series is designed for post-termination labeling, meaning it can be applied to a wire even after the circuit has been soldered or crimped. #### 1. Identification and Troubleshooting In complex electronic systems (like control panels or server racks), these parts allow technicians to identify specific signal lines. The "2" indicates a specific sequence or node in a schematic diagram. #### 2. Material Properties * **Insulation:** Being made of Nylon 66, the marker provides high dielectric strength and does not interfere with the electrical signals of the wire. * **Grip Mechanism:** The "R" design typically features an internal profile that "grips" the wire insulation, preventing the marker from sliding down vertical cable runs or rotating under vibration. #### 3. Standard Compliance These parts are often used in industries requiring high reliability: * **Aerospace & Defense:** For wire harness organization. * **Industrial Automation:** Mapping PLC (Programmable Logic Controller) inputs/outputs. * **Telecommunications:** Labeling patch cables and power leads. --- ### Installation Method The STB03-R-2 is applied using a **dedicated applicator wand** or by hand-snapping. The "03" size signifies the specific outer diameter (OD) of the wire it is intended to fit. If used on a wire too thin, it will slide; if used on a wire too thick, the nylon may stress-crack.