{"id":5635,"date":"2021-08-16T10:27:59","date_gmt":"2021-08-16T10:27:59","guid":{"rendered":"https:\/\/knowhow.distrelec.com\/?p=5635"},"modified":"2021-08-16T10:28:02","modified_gmt":"2021-08-16T10:28:02","slug":"la-solution-a-vos-problemes-dapprovisionnement-en-mlcc","status":"publish","type":"post","link":"https:\/\/knowhow.distrelec.com\/fr\/energie-et-alimentation-electrique\/la-solution-a-vos-problemes-dapprovisionnement-en-mlcc\/","title":{"rendered":"La solution \u00e0 vos probl\u00e8mes d&rsquo;approvisionnement en MLCC"},"content":{"rendered":"\n<div class=\"cnvs-block-toc cnvs-block-toc-1623083265621\" >\n\t<\/div>\n\n\n\n<h2 id=\"la-penurie-de-mlcc\" class=\"wp-block-heading\">La p\u00e9nurie de MLCC<\/h2>\n\n\n\n<p>Le secteur traverse une p\u00e9riode difficile marqu\u00e9e par une p\u00e9nurie mondiale actuelle en mati\u00e8re de condensateur c\u00e9ramique multicouche (MLCC). Cette situation n&rsquo;en finit pas. En effet, de nombreuses raisons contribuent \u00e0 cette p\u00e9nurie.<\/p>\n\n\n\n<p>Tout d&rsquo;abord, le secteur \u00e9lectronique conna\u00eet un d\u00e9veloppement \u00e0 grande vitesse. De nouvelles technologies sont mises au point, les produits de consommation sont remplac\u00e9s plus rapidement et leur cycle de vie s&rsquo;en trouve r\u00e9duit. En outre, de nombreux produits, tels que les voitures int\u00e8grent des technologies plus intelligentes. De ce fait, de plus en plus de composants \u00e9lectroniques sont utilis\u00e9s, et donc, de plus en plus de condensateurs sont utilis\u00e9s \u00e0 l&rsquo;int\u00e9rieur de chaque appareil.<\/p>\n\n\n\n<p>Par cons\u00e9quent, les grands fabricants de MLCC ont atteint leur limite de capacit\u00e9 et sont dans l&rsquo;incapacit\u00e9 de produire la quantit\u00e9 n\u00e9cessaire pour r\u00e9pondre \u00e0 la demande. Les grandes entreprises investissent actuellement dans le d\u00e9veloppement de condensateurs de meilleure qualit\u00e9, ce qui pourrait permettre de r\u00e9duire ou d&rsquo;arr\u00eater la production de MLCC de type standard. Les produits dont la production serait soit arr\u00eat\u00e9e, soit r\u00e9duite, sont ceux dont les petites et moyennes entreprises qui axent leur production sur de petites s\u00e9ries ont cruellement besoin.<\/p>\n\n\n\n<p>Toutefois, lorsqu&rsquo;une porte se ferme, une autre s&rsquo;ouvre. Les fabricants tels que KEMET et Panasonic ont d\u00e9velopp\u00e9 des condensateurs polym\u00e8re qui pourraient servir d&rsquo;alternatives \u00e0 l&rsquo;utilisation des MLCC afin de r\u00e9pondre aux besoins du march\u00e9. Qui l&rsquo;aurait pens\u00e9? Cette technologie polym\u00e8re peut maintenant non seulement remplacer les MLCC, mais aussi permettre d&rsquo;am\u00e9liorer les performances de votre application!<\/p>\n\n\n\n<h2 id=\"les-condensateurs-polymere-une-alternative-aux-mlcc\" class=\"wp-block-heading\">Les condensateurs polym\u00e8re: une alternative aux MLCC<\/h2>\n\n\n\n<p>En consid\u00e9rant les condensateurs polym\u00e8res comme une alternative aux MLCC, on distingue quatre types de polym\u00e8res les plus courants couvrant la plupart des applications :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Les condensateurs aluminium polym\u00e8re<\/li><li>Les condensateurs tantale polym\u00e8re<\/li><li>Les condensateurs hybrides aluminium polym\u00e8re<\/li><li>Les condensateurs aluminium polym\u00e8re \u00e0 couches<\/li><\/ul>\n\n\n\n<p>La gamme de produits propose \u00e9galement des condensateurs \u00e0 film.<\/p>\n\n\n\n<p>Le r\u00e9capitulatif suivant pr\u00e9sente les diff\u00e9rentes conceptions de condensateurs polym\u00e8re.<\/p>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAABWkAAAMuAQMAAABRrhNyAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAKFJREFUeNrtwYEAAAAAw6D5Ux\/hAlUBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA8AyyQAAHWe+aeAAAAAElFTkSuQmCC\"  alt=\"\"  class=\"wp-image-2772 size-full pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/jacks-images-1-1024x602.png\" ><\/figure><div class=\"wp-block-media-text__content\">\n<h3 id=\"les-condensateurs-aluminium-polymere-a-couches\" class=\"wp-block-heading\">Les condensateurs aluminium polym\u00e8re \u00e0 couches<\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>MR\u00e9sine de moulage<\/li><li>P\u00e2te d&rsquo;argent<\/li><li>Borne de connexion<\/li><li>Borne de connexion<\/li><li>P\u00e2te d&rsquo;argent<\/li><li>Carbone<\/li><li>Polym\u00e8re<\/li><li>Film d&rsquo;aluminium<\/li><li>AI2O3<\/li><\/ol>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAABXcAAAMLAQMAAAA\/qDasAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAJxJREFUeNrtwTEBAAAAwqD1T20LL6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAlwEXrgAByLf2tgAAAABJRU5ErkJggg==\"  alt=\"\"  class=\"wp-image-2773 size-full pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/jacks-images-2-1024x570.png\" ><\/figure><div class=\"wp-block-media-text__content\">\n<h3 id=\"les-condensateurs-tantale-polymere\" class=\"wp-block-heading\">Les condensateurs tantale polym\u00e8re<\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>R\u00e9sine de moulage<\/li><li>Borne de connexion<\/li><li>Borne de connexion<\/li><li>P\u00e2te d&rsquo;argent<\/li><li>Carbone<\/li><li>Polym\u00e8re<\/li><li>Tantale fritt\u00e9<\/li><li>Ta2O5<\/li><\/ol>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAABQUAAALVAQMAAABDVxXiAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAIlJREFUeNrtwTEBAAAAwqD1T20Hb6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIDfAMrZAAGnYoDvAAAAAElFTkSuQmCC\"  alt=\"\"  class=\"wp-image-2774 size-full pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/jacks-images-3-1024x578.png\" ><\/figure><div class=\"wp-block-media-text__content\">\n<h3 id=\"les-condensateurs-aluminium-polymere\" class=\"wp-block-heading\">Les condensateurs aluminium polym\u00e8re<\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>Bo\u00eetier en aluminium<\/li><li>Plaque de support<\/li><li>Joint en caoutchouc<\/li><li>Borne de connexion<\/li><li>Film d&rsquo;aluminium<\/li><li>AI2O3<\/li><li>Electrolyte impr\u00e9gn\u00e9 dans l&rsquo;entretoise: Polym\u00e8re<\/li><li>Film d&rsquo;aluminium<\/li><\/ol>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAABQUAAALVAQMAAABDVxXiAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAIlJREFUeNrtwTEBAAAAwqD1T20Hb6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIDfAMrZAAGnYoDvAAAAAElFTkSuQmCC\"  alt=\"\"  class=\"wp-image-2775 size-full pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/jacks-images-4-1024x578.png\" ><\/figure><div class=\"wp-block-media-text__content\">\n<h3 id=\"les-condensateurs-hybrides-aluminium-polymere\" class=\"wp-block-heading\">Les condensateurs hybrides aluminium polym\u00e8re<\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>Bo\u00eetier en aluminium<\/li><li>Plaque de support<\/li><li>Joint en caoutchouc<\/li><li>Borne de connexion<\/li><li>Film d&rsquo;aluminium<\/li><li>AI2O3<\/li><li>Electrolyte hybride impr\u00e9gn\u00e9 dans l&rsquo;entretoise: Polym\u00e8re + liquide \u00e9lectrolyte<\/li><li>Film d&rsquo;aluminium<\/li><\/ol>\n<\/div><\/div>\n\n\n\n<h2 id=\"stabilite-format-compact-et-securite\" class=\"wp-block-heading\">Stabilit\u00e9, format compact et s\u00e9curit\u00e9<\/h2>\n\n\n\n<p>Ces quatre types de condensateurs pr\u00e9sentent certains avantages en commun:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Stabilit\u00e9: temp\u00e9rature constante pendant l&rsquo;utilisation, polarisation DC stable, caract\u00e9ristiques g\u00e9n\u00e9rales stables<\/li><li>Taille: un condensateur polym\u00e8re peut remplacer plusieurs MLCC<\/li><li>S\u00e9curit\u00e9: gr\u00e2ce \u00e0 son mode de protection contre les courts-circuits, un condensateur polym\u00e8re permet de renforcer la s\u00e9curit\u00e9 de vos circuits imprim\u00e9s<\/li><\/ul>\n\n\n\n<p>Shahrokh Kananizadeh, chef de produit en mati\u00e8re de condensateurs en Europe chez Panasonic a pr\u00e9cis\u00e9 les \u00e9l\u00e9ments suivants sur ces produits:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>La constante di\u00e9lectrique reste inchang\u00e9e lorsque la tension change. C&rsquo;est le principal avantage des condensateurs polym\u00e8re (SP-caps). D&rsquo;autre part, les MLCC sont sensibles \u00e0 la d\u00e9formation structurelle lorsqu&rsquo;une tension DC est appliqu\u00e9e, r\u00e9duisant ainsi leur fiabilit\u00e9 globale.<\/p><\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-large\"><img  loading=\"lazy\"  decoding=\"async\"  height=\"385\"  width=\"1024\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAABAAAAAGBAQMAAADCB1EaAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEdJREFUeNrtwTEBAAAAwqD1T20MH6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADOBsIBAAGizCdIAAAAAElFTkSuQmCC\"  alt=\"\"  class=\"wp-image-2776 pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/jacks-images-123-1024x385.png\" ><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img  loading=\"lazy\"  decoding=\"async\"  height=\"129\"  width=\"1024\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAABAAAAACBAQMAAABkcFquAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAACdJREFUeNrtwTEBAAAAwqD1T20MH6AAAAAAAAAAAAAAAAAAAAAAzgZBAQABGR+wEgAAAABJRU5ErkJggg==\"  alt=\"\"  class=\"wp-image-2777 pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/jacks-images-1234-1024x129.png\" ><\/figure>\n\n\n\n<h2 id=\"pourquoi-donc-les-condensateurs-polymere-nont-ils-pas-encore-remplace-les-mlcc\" class=\"wp-block-heading\">Pourquoi donc les condensateurs polym\u00e8re n&rsquo;ont-ils pas encore remplac\u00e9 les MLCC?<\/h2>\n\n\n\n<p>Tout d&rsquo;abord, les MLCC sont des produits v\u00e9ritablement tout-en-un. Ils sont tr\u00e8s polyvalents et conviennent \u00e0 la plupart des applications. Les condensateurs polym\u00e8re, quant \u00e0 eux, ne le sont pas. Leur utilisation doit \u00eatre soigneusement d\u00e9finie. Toutefois, une fois le condensateur polym\u00e8re appropri\u00e9 trouv\u00e9, celui-ci offre souvent des performances optimales, constantes et sur le long terme.<\/p>\n\n\n\n<p>Le principal inconv\u00e9nient des condensateurs polym\u00e8re, c&rsquo;est qu&rsquo;ils sont polaris\u00e9s. Par cons\u00e9quent, ils ne peuvent pas \u00eatre utilis\u00e9s dans les circuits susceptibles de pr\u00e9senter une polarisation inverse ou un signal AC.<\/p>\n\n\n\n<h2 id=\"adopter-les-condensateurs-polymere\" class=\"wp-block-heading\">Adopter les condensateurs polym\u00e8re<\/h2>\n\n\n\n<p>Si vous envisagez d&rsquo;adopter les condensateurs polym\u00e8re, d\u00e9finissez tout d&rsquo;abord vos exigences pour les crit\u00e8res suivants:<\/p>\n\n\n\n<h3 id=\"tension\" class=\"wp-block-heading\">Tension;<\/h3>\n\n\n\n<p>Pour les condensateurs MLCC, celle-ci est indiqu\u00e9e \u00e0 0\/1 V. La capacitance r\u00e9elle diminue en fonction de la tension appliqu\u00e9e. Les condensateurs polym\u00e8re sont stables au-dessus de la tension appliqu\u00e9e, mais un d\u00e9classement de 10 \u00e0 20% doit \u00eatre pris en compte.<\/p>\n\n\n\n<h3 id=\"capacitance-requise\" class=\"wp-block-heading\">Capacitance requise;<\/h3>\n\n\n\n<p>Vous devez conna\u00eetre la capacitance d&rsquo;un condensateur MLCC dans les conditions de l&rsquo;application (tension appliqu\u00e9e, fr\u00e9quence et usure), ainsi que le nombre de condensateurs parall\u00e8les n\u00e9cessaires pour \u00eatre en mesure de calculer la capacit\u00e9 nette totale.<\/p>\n\n\n\n<h3 id=\"courant-dondulation\" class=\"wp-block-heading\">Courant d&rsquo;ondulation;<\/h3>\n\n\n\n<p>Les condensateurs polym\u00e8re peuvent facilement prendre en charge des courants d&rsquo;ondulation allant de 2 \u00e0 3 Arms (exigences d&rsquo;ondulation plus \u00e9lev\u00e9es avec les produits ESR \u00e0 un chiffre ou les structures empil\u00e9es).<\/p>\n\n\n\n<h3 id=\"frequence-de-fonctionnement-temperature-de-fonctionnement-taille-maximale\" class=\"wp-block-heading\">Fr\u00e9quence de fonctionnement; Temp\u00e9rature de fonctionnement; Taille maximale;<\/h3>\n\n\n\n<p>Les condensateurs polym\u00e8re sont l\u00e9g\u00e8rement plus grands que les MLCC, mais peuvent remplacer plusieurs MLCC.<\/p>\n\n\n\n<h3 id=\"cout-total-de-la-solution\" class=\"wp-block-heading\">Co\u00fbt total de la solution;<\/h3>\n\n\n\n<p>Si un petit nombre de MLCC est n\u00e9cessaire pour votre conception, utiliser un condensateur polym\u00e8re peut \u00eatre plus on\u00e9reux, mais sachant que celui-ci peut remplacer plusieurs MLCC, cette solution est g\u00e9n\u00e9ralement plus \u00e9conomique.<\/p>\n\n\n\n<p>Shahrokh Kananizadeh de chez Panasonic a essay\u00e9 de nous expliquer simplement le th\u00e8me des ESR en nous recommandant une ligne de conduite g\u00e9n\u00e9rale concernant l&rsquo;imp\u00e9dance et la fr\u00e9quence ESR:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Plus votre condensateur pr\u00e9sente une imp\u00e9dance ou une valeur ESR faible, plus son utilisation dans un circuit sera utile pour le lissage. Les MLCC pr\u00e9sentent une ESR et une imp\u00e9dance les plus faibles, mais les SP-caps n&rsquo;en sont pas loin. Pour les condensateurs envisag\u00e9s, il est important d&rsquo;\u00e9valuer la r\u00e9ponse en fr\u00e9quence et, en particulier, la fr\u00e9quence de r\u00e9sonance.<\/p><p>De plus, il est \u00e9galement important de vous assurer que les condensateurs sont utilis\u00e9s \u00e0 une fr\u00e9quence inf\u00e9rieure \u00e0 la fr\u00e9quence de r\u00e9sonance. 1 MHz repr\u00e9sente ici, grosso modo, le seuil critique, et vous devez examiner soigneusement les diff\u00e9rences de r\u00e9ponse en fr\u00e9quence.<\/p><\/blockquote>\n\n\n\n<p>En gardant ce cas d&rsquo;utilisation \u00e0 l&rsquo;esprit, parmi les diff\u00e9rents types de condensateurs polym\u00e8re tels que les condensateurs aluminium polym\u00e8res \u00e0 couches, d\u00e9nomm\u00e9s ici par Panasonic SP-Caps, examinons maintenant de plus pr\u00e8s certains autres condensateurs polym\u00e8re et leurs points forts:<\/p>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img  loading=\"lazy\"  decoding=\"async\"  width=\"413\"  height=\"311\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZ0AAAE3AQMAAABLlg5pAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAACZJREFUeNrtwQEBAAAAgiD\/r25IQAEAAAAAAAAAAAAAAAAAAAAHBkBjAAFPNlAFAAAAAElFTkSuQmCC\"  alt=\"\"  class=\"wp-image-2778 size-full pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 413px) 100vw, 413px\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/jacks-images-tantalum.png\"  data-pk-srcset=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-tantalum.png 413w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-tantalum.png?resize=300,225 300w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-tantalum.png?resize=380,286 380w\" ><\/figure><div class=\"wp-block-media-text__content\">\n<h3 id=\"les-condensateurs-tantale-polymere-2\" class=\"wp-block-heading\">Les condensateurs tantale polym\u00e8re<\/h3>\n\n\n\n<p>Les condensateurs tantale polym\u00e8re offrent une faible ESR, une capacit\u00e9 \u00e9lev\u00e9e ainsi qu&rsquo;une tension \u00e9lev\u00e9e. Ils sont parfaitement adapt\u00e9s pour des composants \u00e0 haute fr\u00e9quence. Les condensateurs tantale polym\u00e8re actuels pr\u00e9sentent un mode de d\u00e9faillance sur non-allumage et un d\u00e9classement am\u00e9lior\u00e9.<\/p>\n\n\n\n<p><strong>Caract\u00e9ristiques principales:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Tension moyenne: (24-7 V)<\/li><li>Tensions nominales allant jusqu&rsquo;\u00e0 75 V et tensions d&rsquo;application allant jusqu&rsquo;\u00e0 67.5 V<\/li><li>Courants d&rsquo;ondulation \u00e9lev\u00e9s<\/li><li>Faible tension (5-0.9 V)<\/li><\/ul>\n\n\n\n<p>KEMET:&nbsp;<a href=\"https:\/\/www.distrelec.ch\/search?q=kemet+poly+tantalum+capacitor\">T52X series inc. T521 T54 T59<\/a><\/p>\n\n\n\n<p>Panasonic:&nbsp;<a href=\"https:\/\/www.distrelec.ch\/c\/cat-DNAV_PL_03020201?q=*&amp;filter_Category4=Aluminium+Polymer+Capacitors&amp;filter_Category3=Polymer+Capacitors&amp;filter_Buyable=1&amp;filter_Manufacturer=Panasonic&amp;filter_Construction+form=B2&amp;filter_Construction+form=D2&amp;filter_Construction+form=D3L&amp;filter_Construction+form=D4\">POSCAP TXX series inc TVP TPC TQC<\/a><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img  loading=\"lazy\"  decoding=\"async\"  width=\"444\"  height=\"249\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAbwAAAD5AQMAAABmnBL3AAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAACJJREFUaN7twQEBAAAAgJD+r+4ICgAAAAAAAAAAAAAAAABoN3EAAU9KqQQAAAAASUVORK5CYII=\"  alt=\"\"  class=\"wp-image-2779 size-full pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 444px) 100vw, 444px\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/jacks-images-round.png\"  data-pk-srcset=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-round.png 444w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-round.png?resize=300,168 300w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-round.png?resize=380,213 380w\" ><\/figure><div class=\"wp-block-media-text__content\">\n<h3 id=\"les-condensateurs-aluminium-polymere-2\" class=\"wp-block-heading\">Les condensateurs aluminium polym\u00e8re<\/h3>\n\n\n\n<p>Les condensateurs polym\u00e8re aluminium pr\u00e9sentent une faible ESR, une excellente r\u00e9duction du bruit et des capacit\u00e9s \u00e9lev\u00e9es de courant d&rsquo;ondulation. Ils sont g\u00e9n\u00e9ralement utilis\u00e9s dans les applications qui requi\u00e8rent une capacit\u00e9 \u00e9lev\u00e9e.<\/p>\n\n\n\n<p><strong>Caract\u00e9ristiques principales:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Capacit\u00e9 \u00e9lev\u00e9e: jusqu&rsquo;\u00e0 2 700 microF, jusqu&rsquo;\u00e0 100 V<\/li><li>Tension \u00e9lev\u00e9e (jusqu&rsquo;\u00e0 100 V)<\/li><\/ul>\n\n\n\n<p>KEMET:&nbsp;<a href=\"https:\/\/www.distrelec.ch\/c\/cat-DNAV_PL_03020201?q=*&amp;filter_productFamilyCode=cat-1766831\">A759 series<\/a><\/p>\n\n\n\n<p>Panasonic:&nbsp;<a href=\"https:\/\/www.distrelec.ch\/search?q=OSCONCaps\">OSCON series inc SVP and SEP<\/a><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img  loading=\"lazy\"  decoding=\"async\"  width=\"366\"  height=\"196\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAW4AAADEAQMAAACFnFnwAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAACBJREFUaN7twQENAAAAwqD3T20ON6AAAAAAAAAAAIBHAyP8AAEXFMCIAAAAAElFTkSuQmCC\"  alt=\"\"  class=\"wp-image-2780 size-full pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 366px) 100vw, 366px\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/jacks-images-hybrid-cap.png\"  data-pk-srcset=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-hybrid-cap.png 366w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-hybrid-cap.png?resize=300,161 300w\" ><\/figure><div class=\"wp-block-media-text__content\">\n<h3 id=\"les-condensateurs-hybrides-aluminium-polymere-2\" class=\"wp-block-heading\">Les condensateurs hybrides aluminium polym\u00e8re<\/h3>\n\n\n\n<p>Ces condensateurs hybrides utilisent l&rsquo;aluminium comme cathode ainsi que l&rsquo;association d&rsquo;un liquide et d&rsquo;un polym\u00e8re conducteur comme \u00e9lectrolyte. Il en r\u00e9sulte une conductivit\u00e9 tr\u00e8s \u00e9lev\u00e9e et une faible ESR. Ils peuvent r\u00e9sister \u00e0 des tensions \u00e9lev\u00e9es et fournir des capacit\u00e9s plus \u00e9lev\u00e9es que celles fournies par la plupart des autres condensateurs.<\/p>\n\n\n\n<p><strong>Caract\u00e9ristiques principales:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Mode de d\u00e9faillance b\u00e9nin<\/li><li>Longue dur\u00e9e de viee<\/li><li>Capacit\u00e9 \u00e9lev\u00e9e 80F<\/li><li>Tension \u00e9lev\u00e9e (jusqu&rsquo;\u00e0 100 V)<\/li><\/ul>\n\n\n\n<p>Panasonic:&nbsp;<a href=\"https:\/\/www.distrelec.ch\/search?q=Polymer+hybrid+aluminum+capacitors.+&amp;filter_Manufacturer=Panasonic\">Hybrid<\/a><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img  loading=\"lazy\"  decoding=\"async\"  width=\"300\"  height=\"300\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAAEsAQMAAABDsxw2AAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAACJJREFUaN7twTEBAAAAwqD1T20KP6AAAAAAAAAAAAAAAHgZLbQAAf\/pCWsAAAAASUVORK5CYII=\"  alt=\"\"  class=\"wp-image-2781 size-full pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 300px) 100vw, 300px\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/jacks-images-film-capacitor.jpg\"  data-pk-srcset=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-film-capacitor.jpg 300w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-film-capacitor.jpg?resize=150,150 150w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-film-capacitor.jpg?resize=80,80 80w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/jacks-images-film-capacitor.jpg?resize=110,110 110w\" ><\/figure><div class=\"wp-block-media-text__content\">\n<h3 id=\"condensateurs-a-film\" class=\"wp-block-heading\">Condensateurs \u00e0 film<\/h3>\n\n\n\n<p>Pour les applications analogiques, les condensateurs \u00e0 film peuvent constituer une alternative aux MLCC. Ces condensateurs mont\u00e9s en surface offrent une faible ESR, des facteurs de perte faibles, un bruit de choc inexistant, un effet pi\u00e9zo\u00e9lectrique inexistant et un bruit audible inexistant.<\/p>\n\n\n\n<p>KEMET:&nbsp;<a href=\"https:\/\/www.distrelec.ch\/search?q=film+capacitors&amp;filter_categoryCodePathROOT%2Fcat-L2D_379525=cat-L2-3D_528720&amp;filter_categoryCodePathROOT%2Fcat-L2D_379525%2Fcat-L2-3D_528720=cat-L3D_525328&amp;filter_categoryCodePathROOT=cat-L2D_379525&amp;filter_Manufacturer=KEMET\">FIlm<\/a><\/p>\n\n\n\n<p>Panasonic:&nbsp;<a href=\"https:\/\/www.distrelec.ch\/search?q=film+capacitors&amp;filter_categoryCodePathROOT%2Fcat-L2D_379525=cat-L2-3D_528720&amp;filter_categoryCodePathROOT%2Fcat-L2D_379525%2Fcat-L2-3D_528720=cat-L3D_525328&amp;filter_categoryCodePathROOT=cat-L2D_379525&amp;filter_Manufacturer=Panasonic\">Film<\/a><\/p>\n<\/div><\/div>\n\n\n\n<h2 id=\"qr-avec-les-experts-de-kemet-et-de-panasonic\" class=\"wp-block-heading\">Q&amp;R avec les experts de KEMET et de Panasonic<\/h2>\n\n\n\n<p>Matthias Harder, directeur de la gestion des op\u00e9rations TBG dans la r\u00e9gion EMEA chez KEMET, et Shahrokh Kananizadeh, chef de produit en mati\u00e8re de condensateurs en Europe chez Panasonic, nous ont appris des choses int\u00e9ressantes concernant les condensateurs et ont m\u00eame pris le temps de r\u00e9pondre \u00e0 certaines de nos questions.<\/p>\n\n\n\n<p><strong>Distrelec<\/strong>: Comment convaincre un ing\u00e9nieur qui effectue le prototypage d&rsquo;un produit et doit r\u00e9pondre \u00e0 certaines exigences en mati\u00e8re de MLCC de r\u00e9fl\u00e9chir \u00e0 une solution alternative, comme les condensateurs polym\u00e8re, puis de les int\u00e9grer dans sa nouvelle conception? Existe-t-il un outil\/une m\u00e9thode pour aider \u00e0 cette prise de d\u00e9cision?<\/p>\n\n\n\n<p><strong>Matthias<\/strong>: Les produits de substitution sont d\u00e9j\u00e0 disponibles. En plus de cela, si l&rsquo;on consid\u00e8re le co\u00fbt total de la capacitance souhait\u00e9e et de la capacitance nette souhait\u00e9e, les solutions alternatives sont \u00e9conomiques et permettent de gagner de l&rsquo;espace. Les condensateurs polym\u00e8re peuvent offrir une capacitance plus stable pendant l&rsquo;application d&rsquo;une tension DC ainsi qu&rsquo;une capacitance stable tout au long de leur dur\u00e9e de vie. Pour en savoir plus, nous avons cr\u00e9\u00e9 un webinaire qui traite pr\u00e9cis\u00e9ment de ce sujet:&nbsp;<a href=\"https:\/\/ec.kemet.com\/knowledge\/polymer-capacitors-your-solution-when-mlcc-lead-times-are-tight\">https:\/\/ec.kemet.com\/knowledge\/polymer-capacitors-your-solution-when-mlcc-lead-times-are-tight<\/a>.<\/p>\n\n\n\n<p><strong>Shahrokh:<\/strong>&nbsp;Je vous invite \u00e9galement \u00e0 consulter notre brochure S.O.S. sur les condensateurs polym\u00e8re, qui constitue un excellent point de r\u00e9f\u00e9rence:&nbsp;<a href=\"https:\/\/eu.industrial.panasonic.com\/download\/sos-short-mlccs-choose-panasonic-polymer-series\">https:\/\/eu.industrial.panasonic.com\/download\/sos-short-mlccs-choose-panasonic-polymer-series<\/a><\/p>\n\n\n\n<p><strong>Distrelec:<\/strong>&nbsp;S&rsquo;agit-il d&rsquo;un remplacement \u00e9quivalent ou ai-je besoin de repenser\/reconcevoir mon application?<\/p>\n\n\n\n<p><strong>Matthias:<\/strong>&nbsp;Nous proposons des produits qui peuvent remplacer de mani\u00e8re \u00e9quivalente les MLCC 0805 et 1206. Cependant, nous ne recommandons pas de proc\u00e9der ainsi, car les avantages de la technologie polym\u00e8re ne sont pas exploit\u00e9s \u00e0 leur maximum lors d&rsquo;un tel remplacement. De mani\u00e8re g\u00e9n\u00e9rale, il est int\u00e9ressant d&rsquo;utiliser les polym\u00e8res pour les cas d&rsquo;utilisation suivants:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Une capacitance nette &gt;= 10 \u03bcF (pour les tensions d&rsquo;application allant jusqu&rsquo;\u00e0 14.4 V)<\/li><li>0.68-10 &lt;1&gt;\u03bc F (pour des tensions d&rsquo;application de 45 V et sup\u00e9rieures)<\/li><li>Tensions d&rsquo;application jusqu&rsquo;\u00e0 67.5 V (60 V dans des conditions difficiles)<\/li><li>Fr\u00e9quences allant jusqu&rsquo;\u00e0 1MHz<\/li><\/ul>\n\n\n\n<p>En outre, l&rsquo;utilisation des condensateurs polym\u00e8re est \u00e9galement possible pour d&rsquo;autres cas d&rsquo;utilisation.<\/p>\n\n\n\n<p><strong>Shahrokh:<\/strong>&nbsp;En raison des tailles de bo\u00eetier et des avantages des polym\u00e8res sur les MLCC, une reconception est n\u00e9cessaire. Celle-ci s&rsquo;av\u00e8re justement \u00eatre un avantage pour votre conception, compte tenu du fait qu&rsquo;elle permet de gagner de l&rsquo;espace au niveau du circuit imprim\u00e9 et de r\u00e9duire les co\u00fbts.<\/p>\n\n\n\n<p><strong>Distrelec:<\/strong>&nbsp;Quel est l&rsquo;\u00e9tat des ressources mondiales en mati\u00e8re de condensateurs polym\u00e8re? O\u00f9 se trouvent les installations de production? Si nous commen\u00e7ons \u00e0 les utiliser \u00e0 grande \u00e9chelle, devons-nous craindre un risque imminent de p\u00e9nurie?<\/p>\n\n\n\n<p><strong>Matthias:<\/strong>&nbsp;KEMET pr\u00e9voit d&rsquo;accro\u00eetre sa capacit\u00e9 de production en mati\u00e8re de polym\u00e8res tantale de plus de 50% d&rsquo;ici mars 2020, par rapport \u00e0 mars 2018. La demande annuelle actuelle se situe aux alentours de 1 100 tonnes dans le monde entier et les r\u00e9serves sont de l&rsquo;ordre de plus de 100 000 tonnes.<\/p>\n\n\n\n<p><strong>Shahrokh:<\/strong>&nbsp;Panasonic dispose pour tous ses condensateurs polym\u00e8re de ses propres usine et service de R et D au Japon. Nous disposons d&rsquo;une deuxi\u00e8me source de SP-Cap et POSCAP en dehors du Japon en cas de catastrophes naturelles et probl\u00e8mes de livraison, ce qui signifie que nous ne pr\u00e9voyons actuellement aucun risque de p\u00e9nurie. Le fait de disposer d&rsquo;une deuxi\u00e8me source d&rsquo;approvisionnement pour les condensateurs OSCON et hybrides est \u00e0 l&rsquo;\u00e9tude, mais nous disposons actuellement d&rsquo;un fort potentiel de croissance.<\/p>\n\n\n\n<p><strong>Distrelec:<\/strong>Le tantale est consid\u00e9r\u00e9 comme une ressource qui provient de zones de conflit. Quels pays fournissent KEMET en tantale?<\/p>\n\n\n\n<p><strong>Matthias:<\/strong>&nbsp;KEMET est le seul fabricant se fournissant uniquement dans les zones hors conflit pour les condensateurs tantale MnO2 et polym\u00e8re conform\u00e9ment \u00e0 la R\u00e8gle finale de la SEC concernant les minerais des zones de conflit, Section 1502 de la loi am\u00e9ricaine Dodd-Frank.<\/p>\n\n\n\n<p>Nous nous approvisionnons uniquement en mat\u00e9riaux certifi\u00e9s \u00eatre hors toute zone de conflit. En effet, gr\u00e2ce \u00e0 un \u00absyst\u00e8me de conduits ferm\u00e9\u00bb, nous sommes en mesure de nous approvisionner en R\u00e9publique d\u00e9mocratique du Congo (RDC), mais aussi en minerai de tantale (coltan), K-sel (produit interm\u00e9diaire) ou poudre\/fil de tantale provenant d&rsquo;autres pays et certifi\u00e9s hors de toute zone de conflit. Pour plus d&rsquo;informations, rendez-vous \u00e0 l&rsquo;adresse&nbsp;<a href=\"http:\/\/www.kemet.com\/conflictfree\">http:\/\/www.kemet.com\/conflictfree<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"La p\u00e9nurie de MLCC Le secteur traverse une p\u00e9riode difficile marqu\u00e9e par une p\u00e9nurie mondiale actuelle en mati\u00e8re&hellip;\n","protected":false},"author":4,"featured_media":5636,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"","csco_page_header_type":"","csco_appearance_grid":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_location_hash":"","csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[182],"tags":[],"coauthors":[],"class_list":{"0":"post-5635","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-energie-et-alimentation-electrique","8":"cs-entry","9":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - 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