The **87503CY** is a specific part number belonging to the **Alpha Wire Xtra-Guard® 2** series. It is a high-performance, industrial-grade multiconductor cable designed for demanding environments. Below is a detailed breakdown of its electronic and physical specifications. --- ## 1. Technical Specifications The 87503CY is characterized by its three-conductor configuration and shielded design. | Feature | Specification | | :--- | :--- | | **Number of Conductors** | 3 Conductors | | **Wire Gauge (AWG)** | 20 AWG | | **Conductor Stranding** | 10/30 (Tinned Copper) | | **Shielding Type** | Braid Shield (Supra-Shield®) | | **Shield Material** | Tinned Copper (85% Coverage) | | **Voltage Rating** | 600 Volts | | **Operating Temperature** | -30°C to +90°C | --- ## 2. Component Materials The "CY" suffix typically denotes the construction style (Shielded with a Polyurethane or specialized PVC jacket). ### Conductor * **Material:** Tinned Copper. Tinned copper provides excellent conductivity while resisting corrosion and oxidation, making it easier to solder and more durable in humid environments. * **Insulation:** Usually PVC (Polyvinyl Chloride), providing high dielectric strength. ### Shielding (Supra-Shield®) * The cable features a unique triple-layer foil/braid/drain wire combination or a heavy tinned copper braid. * **Function:** This provides exceptional protection against Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI), ensuring signal integrity for sensitive electronics. ### Outer Jacket * **Material:** Specially formulated Polyurethane (PUR) or heavy-duty PVC. * **Resistance:** Designed to withstand oils, chemicals, solvents, and mechanical abuse (abrasion/cutting). --- ## 3. Key Electronic Characteristics ### Capacitance Due to the shielding and 20 AWG size, the cable has a specific mutual capacitance (roughly **44 pF/ft** to **55 pF/ft** depending on the specific sub-series). Low capacitance is vital for maintaining signal timing in data applications. ### Inductance The nominal inductance is approximately **0.19 µH/ft**, which helps in determining the impedance for high-speed switching circuits. ### Applications The 87503CY is commonly used in: * CNC Machine tools. * Automotive assembly lines. * Control panels requiring EMI protection. * High-flex or high-vibration industrial environments. --- ## 4. Color Code Identification For the 3-conductor 87503CY, the standard Alpha Wire color coding is typically: 1. **Black** 2. **Red** 3. **White**