{"id":6047,"date":"2026-08-07T09:00:00","date_gmt":"2026-08-07T01:00:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=6047"},"modified":"2026-08-04T22:42:54","modified_gmt":"2026-08-04T14:42:54","slug":"navigating-rigid-flex-pcb-design-rules","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/fi\/blog\/navigating-rigid-flex-pcb-design-rules\/","title":{"rendered":"J\u00e4ykkien joustavien piirilevyjen suunnittelus\u00e4\u00e4nt\u00f6jen noudattaminen mekaanisen luotettavuuden maksimoimiseksi"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_74 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Sis\u00e4llysluettelo<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/navigating-rigid-flex-pcb-design-rules\/#The_Intersection_of_Electronics_and_Mechanics\" >Elektroniikan ja mekaniikan risteyskohta<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/navigating-rigid-flex-pcb-design-rules\/#Understanding_the_Rigid-Flex_Architecture_and_Materials\" >Rigid-Flex-arkkitehtuurin ja materiaalien ymm\u00e4rt\u00e4minen<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/navigating-rigid-flex-pcb-design-rules\/#The_Core_Materials\" >Perusmateriaalit<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/navigating-rigid-flex-pcb-design-rules\/#The_Critical_Transition_Zone\" >Kriittinen siirtym\u00e4vy\u00f6hyke<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/navigating-rigid-flex-pcb-design-rules\/#Dynamic_vs_Static_Flexing\" >Dynaaminen vs. staattinen joustavuus<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/navigating-rigid-flex-pcb-design-rules\/#How_to_Design_for_Rigid-Flex_Critical_Design_Rules\" >Rigid-Flex-piirilevyjen suunnittelu (keskeiset suunnittelus\u00e4\u00e4nn\u00f6t)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/navigating-rigid-flex-pcb-design-rules\/#Advanced_Considerations_High-Speed_and_HDI\" >Syvent\u00e4vi\u00e4 n\u00e4k\u00f6kohtia: Suurtaajuus ja HDI<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/navigating-rigid-flex-pcb-design-rules\/#Frequently_Asked_Questions_FAQ\" >Usein kysytyt kysymykset (FAQ)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/navigating-rigid-flex-pcb-design-rules\/#Conclusion\" >P\u00e4\u00e4telm\u00e4<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"The_Intersection_of_Electronics_and_Mechanics\"><\/span>Elektroniikan ja mekaniikan risteyskohta<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Perinteiset j\u00e4yk\u00e4t piirilevyt ovat staattisia; kun ne on asennettu, ne eiv\u00e4t liiku. Mutta mit\u00e4 tapahtuu, kun elektroniikan on mahduttava pieneen l\u00e4\u00e4ketieteelliseen puettavaan laitteeseen, kierty\u00e4 robottik\u00e4den sis\u00e4ll\u00e4 tai kest\u00e4\u00e4 ilmailu- ja avaruusteollisuuden moottorin jatkuvia t\u00e4rin\u00f6it\u00e4? Silloin turvaudutaan Rigid-Flex-tekniikkaan.<\/p>\n<p>Rigid-Flex-piirilevyt yhdist\u00e4v\u00e4t tavallisen FR4-materiaalin vakauden ja polyimidi (PI) -joustavien piirilevyjen dynaamisen monipuolisuuden. Niiden suunnittelu on kuitenkin tunnetusti vaikeaa, sill\u00e4 siin\u00e4 ei en\u00e4\u00e4 riit\u00e4, ett\u00e4 on s\u00e4hk\u00f6insin\u00f6\u00f6ri \u2013 nyt on oltava my\u00f6s mekaniikka-insin\u00f6\u00f6ri. T\u00e4ss\u00e4 artikkelissa k\u00e4ymme l\u00e4pi keskeiset <strong>j\u00e4ykk\u00e4-joustopiirilevyjen suunnittelus\u00e4\u00e4nn\u00f6t<\/strong> T\u00e4m\u00e4 on v\u00e4ltt\u00e4m\u00e4t\u00f6nt\u00e4 halkeilevien johtoreittien, kerrosten irtoamisen ja katastrofaalisten k\u00e4ytt\u00f6katkosten est\u00e4miseksi, jotta suunnittelusi kest\u00e4\u00e4 koko suunnitellun elinkaarensa ajan.<\/p>\n<div style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules.jpg\" alt=\"J\u00e4ykk\u00e4-joustopiirilevyjen suunnittelus\u00e4\u00e4nt\u00f6jen selaaminen\" width=\"600\" height=\"400\" class=\"aligncenter size-full wp-image-6300\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-300x200.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Understanding_the_Rigid-Flex_Architecture_and_Materials\"><\/span>Rigid-Flex-arkkitehtuurin ja materiaalien ymm\u00e4rt\u00e4minen<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Tyypillinen j\u00e4ykk\u00e4-joustolevy ei ole pelk\u00e4st\u00e4\u00e4n kaksi j\u00e4ykk\u00e4\u00e4 levy\u00e4, jotka on yhdistetty nauhakaapelilla. Joustavat polyimidikerrokset on integroitu suoraan j\u00e4ykkien osien kerrostukseen.<\/p>\n<div style=\"text-align: center;\"><\/div>\n<h3><span class=\"ez-toc-section\" id=\"The_Core_Materials\"><\/span>Perusmateriaalit<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Polyimidi (PI)<\/strong>: Joustokohdan runko. PI:ll\u00e4 on uskomaton vetolujuus, l\u00e4mp\u00f6stabiilisuus (kest\u00e4\u00e4 reflow-juottamisen) ja kemiallinen kest\u00e4vyys.<\/li>\n<li><strong>Valssattu ja hehkutettu (RA) kupari<\/strong>: Dynaamiseen taipumiseen RA-kupari on parempi vaihtoehto kuin elektrolyyttisesti pinnoitettu (ED) kupari. Sen vaakasuora rakeinen rakenne mahdollistaa miljoonien taivutusten suorittamisen ilman murtumista.<\/li>\n<li><strong>Peitekerros vs. juotosmaski<\/strong>: Joustavassa osassa ei saa k\u00e4ytt\u00e4\u00e4 tavallista nestem\u00e4ist\u00e4 valokuvauskelpoista (LPI) juotosmaskia, sill\u00e4 se halkeaa v\u00e4litt\u00f6m\u00e4sti. Sen sijaan johtojen p\u00e4\u00e4lle laminoidaan suojaavaksi joustava polyimidip\u00e4\u00e4llyste.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"The_Critical_Transition_Zone\"><\/span>Kriittinen siirtym\u00e4vy\u00f6hyke<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Jokaisen j\u00e4ykk\u00e4-joustosuunnittelun haavoittuvin kohta on <strong>Siirtym\u00e4alue<\/strong>\u2014tarkka raja, jossa j\u00e4ykk\u00e4 FR4-materiaali p\u00e4\u00e4ttyy ja joustava polyimidi alkaa. T\u00e4m\u00e4 liitoskohta toimii voimakkaana j\u00e4nnityskeskittimen\u00e4. Jos piirilevy rikkoutuu mekaanisesti, 90% tapauksista se tapahtuu juuri siirtym\u00e4alueella.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Dynamic_vs_Static_Flexing\"><\/span>Dynaaminen vs. staattinen joustavuus<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ennen reitityst\u00e4 sinun on m\u00e4\u00e4ritett\u00e4v\u00e4 sovellustyyppi:<br \/>* <strong>Staattinen (taivutetaan asennusta varten)<\/strong>: Levy taivutetaan kerran kokoonpanon yhteydess\u00e4, jotta se mahtuu koteloon, eik\u00e4 se en\u00e4\u00e4 juurikaan liiku. T\u00e4ss\u00e4 suhteessa s\u00e4\u00e4nn\u00f6t ovat hieman joustavammat.<br \/>* <strong>Dynaaminen<\/strong>: Levy taipuu jatkuvasti k\u00e4ytt\u00f6ik\u00e4ns\u00e4 aikana (esim. kannettavan tietokoneen sarana tai robottitoimilaitteisto). Suunnittelus\u00e4\u00e4nt\u00f6j\u00e4 on t\u00e4ss\u00e4 tapauksessa noudatettava tiukasti, jotta rakenne kest\u00e4\u00e4 miljoonia taivutussyklej\u00e4.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_to_Design_for_Rigid-Flex_Critical_Design_Rules\"><\/span>Rigid-Flex-piirilevyjen suunnittelu (keskeiset suunnittelus\u00e4\u00e4nn\u00f6t)<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"schema-how-to wp-block-yoast-how-to-block\"><p class=\"schema-how-to-description\">Noudata n\u00e4it\u00e4 suunnittelus\u00e4\u00e4nt\u00f6j\u00e4.<\/p> <ol class=\"schema-how-to-steps\"><li class=\"schema-how-to-step\" id=\"how-to-step-1\"><strong class=\"schema-how-to-step-name\">Laske pienin taivutuss\u00e4de<\/strong> <p class=\"schema-how-to-step-text\">\u00c4l\u00e4 koskaan taita joustavaa piirilevy\u00e4 kuin paperia. Taivutuss\u00e4teen v\u00e4himm\u00e4isarvo m\u00e4\u00e4r\u00e4\u00e4, kuinka tiukasti levy\u00e4 voi taivuttaa ilman, ett\u00e4 kupari murtuu.<br\/>Yksi- tai kaksipuolinen Dynamic Flex: Taivutuss\u00e4teen tulisi olla 10\u201320 kertaa joustavan osan kokonaispaksuus.<br\/>Staattinen taipuisuus: Taivutuss\u00e4de voidaan kasvattaa jopa 10-kertaiseksi paksuuteen n\u00e4hden. <br\/>(Esimerkki: Jos joustavan osan paksuus on 0,2 mm, dynaamisen taivutuss\u00e4teen ehdoton v\u00e4himm\u00e4isarvo on 2,0\u20134,0 mm.)<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-2\"><strong class=\"schema-how-to-step-name\">Suojellaan siirtym\u00e4aluetta<\/strong> <p class=\"schema-how-to-step-text\">\u00c4l\u00e4 koskaan sijoita l\u00e4pivientej\u00e4, metallipinnoitettuja l\u00e4pivientireiki\u00e4 tai pintaliitoskomponentteja alle 0,1 tuuman (2,54 mm) et\u00e4isyydelle siirtym\u00e4alueesta. T\u00e4ll\u00e4 rajapinnalla vaikuttava mekaaninen rasitus repii l\u00e4piviennit rikki ja katkaisee komponenttien juotosliitokset. Valmistajat lis\u00e4\u00e4v\u00e4t yleens\u00e4 t\u00e4h\u00e4n liitoskohtaan epoksi- tai silikonipisaran (venym\u00e4nvaimennuksen).<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-3\"><strong class=\"schema-how-to-step-name\">K\u00e4yt\u00e4 pisaranmuotoisia ja py\u00f6ristettyj\u00e4 viivoja<\/strong> <p class=\"schema-how-to-step-text\">90 asteen kulma johtopiiriss\u00e4 aiheuttaa j\u00e4nnityskeskittym\u00e4n. Kun levy taipuu, kupari murtuu juuri ter\u00e4v\u00e4ss\u00e4 sis\u00e4kulmassa. K\u00e4yt\u00e4 joustavalla alueella johtopiirien reitityksess\u00e4 aina pehmeit\u00e4, kaarevia kaaria. Lis\u00e4\u00e4 lis\u00e4ksi kaikkiin l\u00e4pivientien ja liitosalustojen liitoksiin pisaranmuotoisia vahvistuksia, jotta kupariliitos vahvistuu kohdassa, jossa se yhtyy rengasmaiseen osaan.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-4\"><strong class=\"schema-how-to-step-name\">J\u00e4rjest\u00e4 johtoreitit porrastetusti (kaksipuolinen joustava piirilevy)<\/strong> <p class=\"schema-how-to-step-text\">Jos joustavan materiaalin sek\u00e4 yl\u00e4- ett\u00e4 alapuolella on kuparijohdinreittej\u00e4, **\u00e4l\u00e4 reitit\u00e4 niit\u00e4 suoraan toistensa p\u00e4\u00e4lle**. T\u00e4m\u00e4 aiheuttaa paikallista j\u00e4ykkyytt\u00e4 (ns. \u201dI-palkkivaikutus\u201d) ja lis\u00e4\u00e4 murtumisen riski\u00e4. Sen sijaan sijoita johdinreitit porrastetusti niin, ett\u00e4 ne vuorottelevat v\u00e4lien v\u00e4lill\u00e4, jolloin rasitus jakautuu tasaisesti.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-5\"><strong class=\"schema-how-to-step-name\">K\u00e4yt\u00e4 ristiviivoitettuja kuparivaluja<\/strong> <p class=\"schema-how-to-step-text\">Yhten\u00e4iset kupariset maatasot tekev\u00e4t joustavasta alueesta uskomattoman j\u00e4yk\u00e4n ja alttiin halkeilulle. Korvaa joustavilla alueilla yhten\u00e4iset kuparipinnat ristikk\u00e4isell\u00e4 tai verkkomaisella ruudukolla. Tyypillinen suhde on 0,2 mm:n johtolinja ja 0,4 mm:n aukko. T\u00e4m\u00e4 s\u00e4ilytt\u00e4\u00e4 s\u00e4hk\u00f6isen suojauksen ja parantaa samalla joustavuutta huomattavasti.<\/p> <\/li><\/ol><\/div><p>Jotta saavutetaan mahdollisimman suuri mekaaninen luotettavuus ja noudatetaan IPC-2223-standardeja, n\u00e4m\u00e4 on integroitava <strong>j\u00e4ykk\u00e4-joustopiirilevyjen suunnittelus\u00e4\u00e4nn\u00f6t<\/strong> CAD-ymp\u00e4rist\u00f6\u00f6n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Advanced_Considerations_High-Speed_and_HDI\"><\/span>Syvent\u00e4vi\u00e4 n\u00e4k\u00f6kohtia: Suurtaajuus ja HDI<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>J\u00e4ykk\u00e4-joustopohjaisen rakenteen yhdist\u00e4minen huipputason s\u00e4hk\u00f6isiin vaatimuksiin lis\u00e4\u00e4 monimutkaisuutta entisest\u00e4\u00e4n.<\/p>\n<div style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-1.jpg\" alt=\"J\u00e4ykk\u00e4-joustopiirilevyjen suunnittelus\u00e4\u00e4nt\u00f6jen selaaminen\" width=\"600\" height=\"400\" class=\"aligncenter size-full wp-image-6301\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-1-300x200.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/Navigating-Rigid-Flex-PCB-Design-Rules-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/div>\n<p>Jos reitit\u00e4t monigigabittisi\u00e4 signaaleja joustavan rajan yli, sinun on varmistettava, ett\u00e4 impedanssi pysyy vakaana. Polyimidin (PI) dielektrisyysvakio eroaa FR4:n dielektrisyysvakiosta (tyypillisesti noin 3,2 vs. 4,4), ja kiinte\u00e4n maatasoalueen korvaaminen viivoitetulla maatasoalueella muuttaa johtimen kapasitanssia. Sinun on k\u00e4ytett\u00e4v\u00e4 3D-kentt\u00e4laskuria laskeaksesi johtimen leveyden uudelleen nimenomaan joustavalle osuudelle, jotta 85 ohmin tai 100 ohmin impedanssi s\u00e4ilyy. Saat syv\u00e4llisemp\u00e4\u00e4 tietoa signaalin eheydest\u00e4 lukemalla oppaamme aiheesta <a href=\"\/fi\/blog\/essential-high-speed-pcb-routing-techniques\/\">T\u00e4rkeimm\u00e4t tekniikat piirilevyjen nopeaan reititykseen<\/a>.<\/p>\n<p>Lis\u00e4ksi, jos j\u00e4yk\u00e4t osat vaativat \u00e4\u00e4rimm\u00e4ist\u00e4 miniatyrisointia, voit integroida <a href=\"\/fi\/blog\/mastering-any-layer-hdi-pcb-manufacturing\/\">Mink\u00e4 tahansa kerroksen HDI-piirilevyjen valmistus<\/a> j\u00e4ykkien alueiden sis\u00e4ll\u00e4, jolloin joustavat kerrokset rajoitetaan vain yhteen tai kahteen reitityskerrokseen taipuisuuden maksimoimiseksi.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_FAQ\"><\/span>Usein kysytyt kysymykset (FAQ)<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1\"><strong class=\"schema-faq-question\">Mik\u00e4 on joustavan piirilevyn \u201dj\u00e4ykistin\u201d?<\/strong> <p class=\"schema-faq-answer\">J\u00e4ykistin on ylim\u00e4\u00e4r\u00e4inen pala j\u00e4ykk\u00e4\u00e4 materiaalia (yleens\u00e4 FR4, polyimidi tai ruostumaton ter\u00e4s), joka on liimattu joustavan piirilevyn tiettyyn kohtaan. Sit\u00e4 k\u00e4ytet\u00e4\u00e4n antamaan mekaanista tukea painavien komponenttien (kuten liittimien) alla tai paksuntamaan joustavan piirilevyn reunaa, jotta se voidaan asettaa ZIF-liittimeen (Zero Insertion Force).<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-2\"><strong class=\"schema-faq-question\">Voinko sijoittaa komponentteja piirilevyn joustavaan osaan?<\/strong> <p class=\"schema-faq-answer\">Kyll\u00e4, mutta tietyin varauksin. Taivutusalueella olevien komponenttien tulee olla pieni\u00e4 ja sijoitettu siten, ett\u00e4 niiden pisin ulottuvuus on yhdensuuntainen taivutusakselin kanssa, jotta juotosliitosten rasitus voidaan minimoida. Lis\u00e4ksi komponenttien, joissa on paljon nastoja, tai painavien liittimien alle on asennettava j\u00e4ykisteit\u00e4, jotta joustava materiaali ei repe\u00e4.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-3\"><strong class=\"schema-faq-question\">Voinko k\u00e4ytt\u00e4\u00e4 tavallista elektrolyyttisesti pinnoitettua (ED) kuparia dynaamisessa joustavassa piirilevyss\u00e4?<\/strong> <p class=\"schema-faq-answer\">Sit\u00e4 ei suositella lainkaan. ED-kuparilla on pystysuuntainen rakeisuus, joka on altis mikrohalkeilulle toistuvan rasituksen alaisena. Valssattu ja hehkutettu (RA) kupari, jolla on vaakasuuntainen rakeisuus, on huomattavasti parempi vaihtelevaan taivutukseen.<\/p> <\/div> <\/div><h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>P\u00e4\u00e4telm\u00e4<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Mastering <strong>j\u00e4ykk\u00e4-joustopiirilevyjen suunnittelus\u00e4\u00e4nn\u00f6t<\/strong> t\u00e4ytt\u00e4\u00e4 s\u00e4hk\u00f6isen toiminnallisuuden ja mekaanisen kest\u00e4vyyden v\u00e4lisen aukon. Hallitsemalla taivutuss\u00e4dett\u00e4 huolellisesti, vahvistamalla siirtym\u00e4alueita, porrastamalla johtoreittej\u00e4 ja py\u00f6rist\u00e4m\u00e4ll\u00e4 geometrisia kulmia insin\u00f6\u00f6rit voivat suunnitella eritt\u00e4in dynaamisia liit\u00e4nt\u00f6j\u00e4, jotka kest\u00e4v\u00e4t ankarimmissakin olosuhteissa. Vaikka suunnitteluvaihe on kiistatta vaativampi, lopputuloksena saavutettu tuotteen koon pienentyminen ja luotettavuuden parantuminen ovat vaivan arvoisia.<\/p>","protected":false},"excerpt":{"rendered":"<p>Elektroniikan ja mekaniikan risteyskohta Perinteiset j\u00e4yk\u00e4t piirilevyt ovat staattisia; kun ne on asennettu, ne eiv\u00e4t liiku. Mutta mit\u00e4 tapahtuu, kun elektroniikan on mahduttava pieneen l\u00e4\u00e4ketieteelliseen puettavaan laitteeseen, kiertytt\u00e4v\u00e4 robottik\u00e4den sis\u00e4ll\u00e4 tai kestett\u00e4v\u00e4 ilmailu- ja avaruusteollisuuden moottorin jatkuvia t\u00e4rin\u00f6it\u00e4? Silloin turvaudutaan Rigid-Flex-tekniikkaan. Rigid-Flex-piirilevyt yhdist\u00e4v\u00e4t tavallisten [\u2026] vakauden<\/p>","protected":false},"author":1,"featured_media":6302,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"rigid flex PCB design rules","_yoast_wpseo_title":"Rigid-Flex PCB Design Rules for Maximum Mechanical Reliability","_yoast_wpseo_metadesc":"Explore essential rigid-flex PCB design rules, including bend radius, layer stackup, material selection, and mechanical reliability considerations for durable flexible circuits.","footnotes":""},"categories":[108],"tags":[505,507,506,508,504],"class_list":["post-6047","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-flexible-electronics","tag-mechanical-reliability","tag-pcb-design-rules","tag-polyimide","tag-rigid-flex-pcb-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - 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The minimum bend radius dictates how tightly you can bend the board without breaking the copper.<br\/>Single\/Double-Sided Dynamic Flex: Bend radius should be 10 to 20 times the total thickness of the flexible section.<br\/>Static Flex: Bend radius can be pushed to 10 times the thickness. <br\/>(Example: If your flex section is 0.2mm thick, your absolute minimum dynamic bend radius is 2.0 mm- 4.0 mm)."}]},{"@type":"HowToStep","url":"https:\/\/www.topfastpcb.com\/blog\/navigating-rigid-flex-pcb-design-rules\/#how-to-step-4","name":"Calculate the Minimum Bend Radius","itemListElement":[{"@type":"HowToDirection","text":"Never fold a flex circuit like a piece of paper. The minimum bend radius dictates how tightly you can bend the board without breaking the copper.<br\/>Single\/Double-Sided Dynamic Flex: Bend radius should be 10 to 20 times the total thickness of the flexible section.<br\/>Static Flex: Bend radius can be pushed to 10 times the thickness. <br\/>(Example: If your flex section is 0.2mm thick, your absolute minimum dynamic bend radius is 2.0 mm- 4.0 mm)."}]},{"@type":"HowToStep","url":"https:\/\/www.topfastpcb.com\/blog\/navigating-rigid-flex-pcb-design-rules\/#how-to-step-5","name":"Calculate the Minimum Bend Radius","itemListElement":[{"@type":"HowToDirection","text":"Never fold a flex circuit like a piece of paper. The minimum bend radius dictates how tightly you can bend the board without breaking the copper.<br\/>Single\/Double-Sided Dynamic Flex: Bend radius should be 10 to 20 times the total thickness of the flexible section.<br\/>Static Flex: Bend radius can be pushed to 10 times the thickness. <br\/>(Example: If your flex section is 0.2mm thick, your absolute minimum dynamic bend radius is 2.0 mm- 4.0 mm)."}]}],"inLanguage":"fi"}]}},"_links":{"self":[{"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/posts\/6047","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/comments?post=6047"}],"version-history":[{"count":11,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/posts\/6047\/revisions"}],"predecessor-version":[{"id":6393,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/posts\/6047\/revisions\/6393"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/media\/6302"}],"wp:attachment":[{"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/media?parent=6047"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/categories?post=6047"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/tags?post=6047"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}