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what is shielded cable<\/p><\/div>\\n<\/p>\n
In this article, we\u2019ll explain what shielded cable is, how it works, where it\u2019s used, and how it differs from unshielded cable\u2014helping you make the right choice for your application.<\/p>\n
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What Is Shielded Cable?<\/h2>\n
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Shielded cable<\/strong> is a type of electrical or signal cable that includes a conductive shield layer<\/strong> wrapped around the inner conductors. This shield helps block electromagnetic interference (EMI)<\/strong> and radio frequency interference (RFI)<\/strong> from external sources\u2014and also prevents the cable itself from emitting interference.<\/p>\n \\n<\/p>\n The shield is typically made of:<\/p>\n \\n\\n<\/p>\n Braided copper wire<\/strong><\/p>\n \\n<\/li>\n \\n \\t<\/p>\n Aluminum foil<\/strong><\/p>\n \\n<\/li>\n \\n \\t<\/p>\n Copper tape<\/strong><\/p>\n \\n<\/li>\n \\n \\t<\/p>\n Or a combination of these<\/strong><\/p>\n \\n<\/li>\n \\n<\/ul>\n \\n<\/p>\n The shield is then covered by an outer insulating jacket.<\/p>\n \\n\\n\\n<\/p>\n \\n<\/p>\n The main purpose of shielded cable is to protect signal integrity<\/strong> by minimizing noise and crosstalk. It’s essential in environments with:<\/p>\n \\n\\n<\/p>\n High electrical noise (e.g., motors, transformers)<\/p>\n \\n<\/li>\n \\n \\t<\/p>\n Sensitive signals (e.g., audio, data, instrumentation)<\/p>\n \\n<\/li>\n \\n \\t<\/p>\n Long-distance transmission<\/p>\n \\n<\/li>\n \\n<\/ul>\n \\n<\/p>\n Without shielding, interference can distort or corrupt signals\u2014leading to performance issues or even equipment failure.<\/p>\n \\n\\n\\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/thead>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/tbody>\n \\n<\/table>\n \\n<\/p>\n \\n<\/p><\/div>\n \\n<\/p><\/div>\n \\n<\/p><\/div>\n \\n<\/p>\n You may also see the terms STP (Shielded Twisted Pair)<\/strong> or FTP (Foiled Twisted Pair)<\/strong> in networking cables.<\/p>\n \\n\\n\\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/thead>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/p>\n \\n<\/p>\n \\n<\/p>\n \\n<\/tr>\n \\n<\/tbody>\n \\n<\/table>\n \\n<\/p>\n \\n<\/p><\/div>\n \\n<\/p><\/div>\n \\n<\/p><\/div>\n \\n<\/p>\n Use shielded cable when performance and reliability are critical\u2014especially near sources of interference.<\/p>\n \\n\\n\\n<\/p>\n \\n<\/p>\n Shielded cables are widely used in:<\/p>\n \\n\\n<\/p>\n\\n \\t<\/p>\n
\\n\\n<\/p>\nWhat Is the Purpose of Shielded Cable?<\/h2>\n
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\\n\\n<\/p>\nCommon Types of Shielded Cable<\/h2>\n
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\\n<\/p>\n Type<\/strong><\/th>\n Description<\/strong><\/th>\n Typical Use<\/strong><\/th>\n \\n<\/p>\n Foil Shield<\/strong><\/td>\n Thin aluminum foil wrapped around conductors<\/td>\n Data, audio\/video, instrumentation<\/td>\n \\n<\/p>\n Braided Shield<\/strong><\/td>\n Interwoven copper strands<\/td>\n Industrial power, audio, RF systems<\/td>\n \\n<\/p>\n Spiral Shield<\/strong><\/td>\n Spiral-wrapped copper for flexibility<\/td>\n Audio cables, microphones<\/td>\n \\n<\/p>\n Overall Shield<\/strong><\/td>\n Shield covers all conductors as a group<\/td>\n General EMI protection<\/td>\n \\n<\/p>\n Individual Shield<\/strong><\/td>\n Each pair or wire has its own shield<\/td>\n High-performance data\/audio cables<\/td>\n
\\n\\n<\/p>\nShielded vs. Unshielded Cable<\/h2>\n
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\\n<\/p>\n Feature<\/th>\n Shielded Cable<\/strong><\/th>\n Unshielded Cable (UTP)<\/strong><\/th>\n \\n<\/p>\n EMI Protection<\/strong><\/td>\n High<\/td>\n Low to none<\/td>\n \\n<\/p>\n Signal Integrity<\/strong><\/td>\n More stable in noisy environments<\/td>\n Can be disrupted by interference<\/td>\n \\n<\/p>\n Flexibility<\/strong><\/td>\n Slightly less flexible<\/td>\n More flexible<\/td>\n \\n<\/p>\n Cost<\/strong><\/td>\n More expensive<\/td>\n Less expensive<\/td>\n \\n<\/p>\n Use Cases<\/strong><\/td>\n Industrial, medical, audio\/video<\/td>\n General networking, residential use<\/td>\n
\\n\\n<\/p>\nCommon Applications<\/h2>\n