Are you tired of cables that ruin your signal? Do you hate it when your keyboard lags or your industrial sensor gives wrong data? It happens when cables are not built right. Cheap wires pick up noise from motors, power lines, and other electronics. This is called EMI (Electromagnetic Interference). It causes errors, slow data, and broken connections. You need a cable that stops this noise. You need a cable that is flexible, strong, and built for real work. Our 3.1 imported 4-core shielded signal extension cable is the answer. It is not just a wire. It is a shield for your data. We make it for English-speaking markets like the US, UK, and Australia. It fits 3.1 standards for high-speed data. Use it for keyboards, CNC machines, or medical sensors. It works perfectly every time.
Why This 4-Core Shielded Cable Solves Your Biggest Problems
Cables fail for three main reasons. First, they are too stiff and break when you bend them. Second, they let noise into the signal. Third, the jacket peels off easily. We fixed all three. This 28AWG*4C keyboard data cable uses fine stranded copper. It bends easily around corners. It fits in tight drag chains inside machines. The shielding is a double layer. We use aluminum foil first. Then we add a tinned copper braid. This double wall stops EMI and RFI (Radio Frequency Interference). The outer jacket is PVC or TPU. It resists oil, UV sun rays, and cold weather. It does not crack like cheap plastic. This is why it is the best choice for 3.1 imported signal extension.
Detailed Technical Specifications (The Numbers Matter)
We believe in honesty. Here are the real specs for this 4-core shielded cable. You can compare these to any datasheet from Alpha Wire or Belden.
Conductor and Gauge Details
- Conductor Material: Tinned Copper or Bare Copper (Oxygen-free for high-end).
- Gauge: 28 AWG (approx 0.08 mm² to 0.1 mm² cross-section). Note: 28 AWG is slightly smaller than 0.1 sq mm, but it is the standard for flexible USB and data cables. If you need exactly 0.1 sq mm, we recommend 26 AWG.
- Stranding: 7/36 (7 strands of 36 AWG wire). This makes the wire very flexible.
- Insulation: Polypropylene (PP) or PVC. Color-coded for easy wiring. Usually Black, Red, White, and Green.
- Shielding Type: Foil + Braid.
- Inner Shield: 100% Aluminum/Polyester foil with 25% overlap.
- Outer Shield: Tinned copper braid (65% to 95% coverage).
- Drain Wire: 28 AWG tinned copper wire to ground the shield easily.
Physical and Electrical Properties
- Outer Diameter (OD): 3.9 mm to 5.0 mm (approx 0.16 to 0.20 inches).
- Jacket Material: PVC (Polyvinyl Chloride) or TPU (Thermoplastic Polyurethane).
- PVC: Good for general use, flame retardant (UL VW-1).
- TPU: Better for cold weather, oil resistant, and medical grade (non-toxic).
- Voltage Rating: 300 Volts (UL Style 2464).
- Temperature Range: -20°C to +80°C (PVC) or -40°C to +105°C (TPU/Special PVC).
- Impedance: Not strictly controlled (for power/low-speed data), but capacitance is low (approx 26 pF/ft).
- Length: Custom cut or standard reels (1000ft / 305m).
Where to Use This Cable (Real World Scenarios)
This cable is not just for one thing. It is a multi-purpose tool for engineers and IT pros. Here are the top ways to use it.
Industrial Automation and CNC Machines
Factories are noisy places. Motors and welders create huge magnetic fields. If you use a normal cable for a sensor or stepper motor, the signal gets corrupted. The machine stops or makes bad parts. Our 4-core shielded cable stops this. It keeps the control signal clean. It is perfect for RS485, RS232, and CAN bus systems. It resists oil and coolant fluids.
High-End Keyboard and Gaming Setups
Mechanical keyboard enthusiasts love custom cables. They need a 5-pin or 4-pin USB cable. Standard cables are too stiff. They look ugly on a desk. Our 28AWG*4C cable is slim and flexible. The foil shielding stops “ghosting” or missed keystrokes. It works with USB 3.1 and USB 2.0. You can use it to extend a keyboard from a PC to a distant desk. It looks professional and works fast.
Medical and Audio Equipment
Medical devices need to be safe and accurate. Audio gear needs zero noise. The TPU jacket option is medical grade. It is hypoallergenic and easy to clean. The double shielding ensures that heart rate monitors or high-fidelity audio signals are not distorted by nearby Wi-Fi routers or cell phones. It passes strict flame tests (UL 94V-0).
Computer and IT Repair
For IT shops, having the right spare part is key. This cable fits DB15 and DB9 serial connectors. It is great for extending printer cables or connecting old industrial equipment to new laptops. The 300V rating means it is safe for power over Ethernet (PoE) or low-voltage power applications (up to 24V or 48V).
Shielding Explained: Foil vs. Braid vs. Double Shield
Why do we use double shielding? Let’s break it down simply.
Aluminum Foil Shield
- Pros: 100% coverage. Blocks high-frequency noise (like Wi-Fi signals).
- Cons: Easy to tear. Not very durable if the cable moves a lot.
- Best for: Static cables or inside a strong outer jacket.
Copper Braid Shield
- Pros: Very strong. Handles low-frequency noise (like power line hum). Good for grounding.
- Cons: Has small gaps. Some very high-frequency noise can sneak through.
- Best for: Cables that flex and move constantly.
Our Double Shield (Foil + Braid)
We combine both. The foil blocks the high-frequency stuff. The braid blocks the low-frequency stuff and protects the foil. This gives you the best EMI protection possible. It is the “Gold Standard” for data cables in harsh environments.
Quality Control and Certifications
You cannot trust a cable that has not been tested. We follow strict rules. Our factory produces cables that meet international standards.
- UL Listed: UL Style 2464 and UL 20276 for power and data.
- RoHS Compliant: No lead, mercury, or cadmium. Safe for the environment.
- REACH Compliant: Safe for use in Europe.
- Flame Tests: Passes UL 70,000 BTU Vertical Tray Flame Test and CSA CMG.
- Testing: We use machines like the Blancco app diagnostics for connectivity. Every batch is tested for continuity and shorts.
We know that brands like HP, Lenovo, and Intel have strict return rules. If a cable is “dead on arrival,” it costs you money and time. Our quality control ensures less than 0.1% defect rate. We offer a 7-10 day replacement policy if there is a factory defect.
Packaging and Shipping Logistics
We are a foreign trade cable factory. We know how to ship globally.
- Packaging: Coils of 100m, 305m (1000ft), or 500m. For short lengths (1m, 2m), we use polybags with desiccant to stop moisture.
- Outer Box: Strong corrugated cartons (5-ply). MRP tags attached.
- Shipping: We ship via DHL, FedEx, or Sea Freight.
- Express: 3-5 days to USA/UK/Europe.
- Sea: 30-45 days for bulk pallets.
- Customs: We provide all documents (Invoice, Packing List, COO, UL certs if needed) for smooth customs clearance in New York, London, or Sydney.
Why Buy From Us? (The “Semrush” Style Value Prop)
You have many choices on Alibaba or Amazon. Why choose us?
- We Speak Your Language: Our support team understands English markets. We know what “AWG”, “Shielding”, and “OD” mean to you. No translation errors.
- Customization King: Need a special color? Grey, black, or glossy? Need a special connector molded on? We can do OEM/ODM. We can print your logo on the jacket.
- Material Truth: Some sellers claim “Pure Silver” or “OCC Copper” to raise prices. We use high-quality Tinned Copper. It resists oxidation and conducts well. It gives you 99% of the performance for 50% of the cost of exotic metals.
- Speed: We keep 28AWG and 24AWG in stock. We do not make you wait 30 days for standard items.
Frequently Asked Questions (Quick Answers)
Q: Is this cable USB 3.1 compliant?A: Yes. The 28AWG 4-core structure with twisted pair and shielding is the standard for USB 3.1 Gen 1 and Gen 2 data lines. It handles speeds up to 10 Gbps for short runs.Q: Can I use this for power?A: Yes, but carefully. 28 AWG can carry about 1.4 to 2.0 Amps max. It is great for 5V or 12V power to sensors or keyboards. Do not use it for 110V/220V mains power.Q: What is the minimum order quantity (MOQ)?A: For stock items, we accept small orders (even 100 meters). For custom colors or jackets, MOQ is usually 1000 meters.Q: How flexible is it really?A: Very. Because we use 28 AWG stranded wire and a special PVC/TPU blend, the bend radius is about 4x the cable diameter. You can tie it in a knot (gently) without breaking it.
Ready to Upgrade Your Cabling?
Stop dealing with signal noise and broken wires. Get a cable that works as hard as you do. Whether you need 100 meters for a factory line or 1000 feet for a warehouse stock, we have you covered. Our 3.1 imported 4-core shielded signal extension cable is built to last. It has the foil shielding you need and the flexibility you want.Click “Contact Supplier” or “Request a Quote” right now. Tell us your length, jacket color, and shielding needs. We will send you a detailed PI (Proforma Invoice) within 24 hours. Let’s fix your signal problems today.