English 
Shielded Hookup Wire is a cable with a shielding layer, which is usually used in applications where electromagnetic interference needs to be reduced. This shielding layer is usually in the form of metal braid or metal foil, which can effectively isolate external electromagnetic interference, thereby protecting the integrity of the internal signal.
The structure of shielded hookup wire usually includes the following parts:
Conductor: The conductor is located in the innermost layer of the shielded hookup wire and is used to transmit signals. It is usually made of copper and can be single-core or multi-core. For multi-core conductors, multiple smaller copper wires are usually twisted together to increase flexibility and tensile strength. This design not only improves the mechanical properties of the conductor, but also reduces interference during signal transmission.
Insulation layer: A layer of insulating material wrapped around the conductor is used to isolate the conductor from the outside world, prevent current leakage, and provide necessary electrical isolation.
Common materials of the Insulation layer are polytetrafluoroethylene (Teflon), polyvinyl chloride (PVC), or fluorinated ethylene propylene (FEP). These materials can effectively prevent current leakage and provide necessary electrical isolation. PTFE and FEP have good heat resistance and chemical resistance, and can effectively protect conductors from high temperature and high pressure environments.
Shielding layer: Outside the insulation layer, a metal shielding layer is usually added to prevent electromagnetic interference (EMI) and radio frequency interference (RFI), thereby improving the stability and anti-interference ability of the signal. The metal shielding layer can be a concentric layer or a combined structure of metal tape, metal braiding, metal wire, or a metal sleeve or armor layer.
Specific materials include bare copper wire braiding, tinned copper wire braiding, tinned copper wire winding, aluminum-plastic composite tape shielding, etc. The shielding layer suppresses electromagnetic interference through reflection, absorption and skin effect to ensure the integrity of signal transmission.
Jacket: The outermost layer is usually wrapped with a flexible sheath, such as PVC or TPE, to protect the internal structure from physical damage and environmental factors. The sheath layer also has certain temperature resistance and corrosion resistance, which can prevent the cable from being worn, corroded or damaged by external forces in harsh environments.
In some shielded hookup wires, a separate ground wire is included within the shield to enhance grounding and improve the effectiveness of the shield.
The components of the shielded hookup wire work together to ensure efficient and reliable signal transmission. The conductor is responsible for signal transmission, the insulation layer provides electrical isolation, the shield layer suppresses electromagnetic interference, and the jacket layer protects the entire cable from external physical and environmental factors.
In industrial control and automation equipment, shielded hookup wire can be used for internal wiring of industrial automation instruments, control panels, switchgear and electronic computer equipment to ensure a smooth and safe working environment.
In audio and video equipment, it is used for audio signal transmission to prevent magnetic field pickup and low-frequency interference. In professional audio equipment, shielded solid or stranded hookup wires are used to connect input and output sockets to ensure signal stability and clarity.
In data communication and network equipment, shielded hookup wire is widely used to improve the reliability and speed of data transmission and reduce the risk of data loss and equipment failure.
Hielded hookup wire is also used in some special environment applications, such as high temperature, high pressure or corrosive environment. For example, PTFE or FEP shielded hookup wire can work at temperatures up to 200°C. These cables are often used in industrial heating equipment, measuring instruments and other occasions that require high temperature resistance.
1. By adding a metal shielding layer around its insulated conductor, it effectively prevents external electromagnetic fields and radio frequency signals from interfering with the signal.
2. In applications such as load sensors, shielded hookup wire can protect the signal from external interference, ensure the strength and stability of the signal, and thus improve measurement accuracy and reliability.
3. In high-frequency applications, shielded hookup wire can effectively reduce signal attenuation and crosstalk, especially in audio, video and communication equipment, where its shielding layer can prevent signal leakage and external interference.
4. Shielded hookup wire can reduce crosstalk, especially in sensitive circuits, by isolating the signal path through the shielding layer to avoid mutual interference between signals.
5. The shielding layer of shielded hookup wire can not only protect the signal from external interference, but also prevent the influence of electromagnetic radiation on the human body and other equipment. In addition, the shielding layer can also provide certain mechanical protection and reduce the risk of physical damage.
