Antiest\u00e1tico, disipativo, conductor: los t\u00e9rminos se usan como sin\u00f3nimos y eso causa problemas reales. La especificaci\u00f3n que importa es la resistividad, y hay dos tipos.<\/p>\n\n
La resistividad volum\u00e9trica describe con qu\u00e9 facilidad se desplaza la carga a trav\u00e9s del interior del material. La resistividad superficial describe c\u00f3mo se desplaza por la cara. En un utillaje que toca una PCB por una cara, la resistividad superficial es el valor que determina el comportamiento. En un revestimiento de conducto de polvo, domina la resistividad volum\u00e9trica.<\/p>\n\n
La mayor\u00eda de los clientes de semiconductores especifican de 10 elevado a 6 a 10 elevado a 9 ohmios para ambas, lo que sit\u00faa el material claramente en la banda disipativa: lo bastante lento para evitar una chispa y lo bastante r\u00e1pido para evacuar la carga antes de que se acumule. Los materiales realmente conductores por debajo de 10 elevado a 4 ohmios pueden da\u00f1ar los dispositivos al descargarse con demasiada rapidez. Los grados con carga de negro de humo son la v\u00eda habitual; la contrapartida es que son negros, opacos y algo m\u00e1s d\u00e9biles al impacto que el pol\u00edmero sin carga.<\/p>\n\n","protected":false},"excerpt":{"rendered":"
De 10 elevado a 6 a 10 elevado a 9 ohmios suena sencillo hasta que se mira la ficha t\u00e9cnica. Aqu\u00ed tiene qu\u00e9 significan realmente la resistividad superficial y la volum\u00e9trica para el dise\u00f1o de utillajes, y qu\u00e9 portadores conviene evitar.<\/p>\n","protected":false},"author":193679612,"featured_media":101,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"Surface versus volume resistivity in ESD plastics, the grades that meet each spec, and how to choose for semiconductor fixtures.","jetpack_seo_html_title":"Choosing an ESD Material for Fixtures | Top Plastic","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_tp_seo_title":"Choosing an ESD Material for Fixtures | Top Plastic","_tp_seo_desc":"Surface versus volume resistivity in ESD plastics, the grades that meet each spec, and how to choose for semiconductor fixtures.","_tp_summary":"","_tp_updated":"","_jetpack_feature_clip_id":0,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[132592],"tags":[132588],"class_list":["post-100","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-material-guide","tag-technical"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pcp8Cz-1C","jetpack-related-posts":[{"id":561,"url":"https:\/\/cntopplastics.com\/es\/machining-esd-plastics-resistivity\/","url_meta":{"origin":100,"position":0},"title":"Machining ESD plastics without losing the resistivity","author":"jessemei","date":"2026-10-26","format":false,"excerpt":"Cutting, sanding or overheating a dissipative grade can shift surface resistivity by decades. How to machine ESD plastics and verify the result.","rel":"","context":"En \u00abMachining\u00bb","block_context":{"text":"Machining","link":"https:\/\/cntopplastics.com\/es\/category\/machining\/"},"img":{"alt_text":"POM ESD Anti-static Sheet","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-pom-esd.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-pom-esd.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-pom-esd.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-pom-esd.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":864,"url":"https:\/\/cntopplastics.com\/es\/antistatic-abs-vs-pom\/","url_meta":{"origin":100,"position":1},"title":"ESD ABS o ESD POM: c\u00f3mo elegir pl\u00e1stico antiest\u00e1tico para utillajes y manipulaci\u00f3n","author":"jessemei","date":"2026-10-31","format":false,"excerpt":"Both are sold as dissipative sheet and rod, both machine cleanly, and both cost far less than PEEK. The choice turns on wear debris, solvent exposure and how tight the tolerance has to stay after a thousand wipes.","rel":"","context":"En \u00abTechnical Notes\u00bb","block_context":{"text":"Technical Notes","link":"https:\/\/cntopplastics.com\/es\/category\/technical-notes\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":534,"url":"https:\/\/cntopplastics.com\/es\/semiconductor-wafer-handling-plastic-parts\/","url_meta":{"origin":100,"position":2},"title":"Plastic parts for wafer handling: what actually matters","author":"jessemei","date":"2026-10-20","format":false,"excerpt":"Wafer-handling parts are judged on particles, outgassing, ESD and stability, not datasheet strength. Choose the grade, then verify the process.","rel":"","context":"En \u00abIndustry Applications\u00bb","block_context":{"text":"Industry Applications","link":"https:\/\/cntopplastics.com\/es\/category\/industry-applications\/"},"img":{"alt_text":"Black ESD PEEK stock: three stacked black PEEK plates, a black PEEK rod disc and a machined PEEK bushing","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-peek-esd.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-peek-esd.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-peek-esd.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-peek-esd.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":104,"url":"https:\/\/cntopplastics.com\/es\/semiconductor-esd-fixtures\/","url_meta":{"origin":100,"position":3},"title":"Utillajes ESD para pruebas de semiconductores: materiales que superan la cualificaci\u00f3n","author":"jessemei","date":"2026-09-03","format":false,"excerpt":"Test sockets and wafer-handling fixtures fail qualification for three reasons \u2014 resistivity drift, outgassing and particulate. Here is how to close all three at once.","rel":"","context":"En \u00abIndustry Applications\u00bb","block_context":{"text":"Industry Applications","link":"https:\/\/cntopplastics.com\/es\/category\/industry-applications\/"},"img":{"alt_text":"ESD fixtures for semiconductor test: material choices that pass qualification","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-semiconductor-esd-fixtures.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-semiconductor-esd-fixtures.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-semiconductor-esd-fixtures.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-semiconductor-esd-fixtures.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":558,"url":"https:\/\/cntopplastics.com\/es\/peek-30-carbon-fibre-when-to-use\/","url_meta":{"origin":100,"position":4},"title":"PEEK 30% carbon fibre: when it beats unfilled PEEK","author":"jessemei","date":"2026-10-22","format":false,"excerpt":"Carbon fibre triples PEEK's stiffness and halves its thermal expansion, but cuts impact strength. A decision guide for bearings, seals and structures.","rel":"","context":"En \u00abMaterial Guide\u00bb","block_context":{"text":"Material Guide","link":"https:\/\/cntopplastics.com\/es\/category\/material-guide\/"},"img":{"alt_text":"PEEK 30% Carbon Fibre","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-peek-cf30.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-peek-cf30.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-peek-cf30.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/tp-peek-cf30.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":114,"url":"https:\/\/cntopplastics.com\/es\/ptfe-fillers-explained\/","url_meta":{"origin":100,"position":5},"title":"Las cargas del PTFE explicadas: vidrio, carbono, bronce y lo que hace realmente cada una","author":"jessemei","date":"2026-07-30","format":false,"excerpt":"Virgin PTFE is soft, creeps and wears fast under load. The filler you choose fixes one problem and usually creates another. 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