Werezerani momwe kutentha kumagwirira ntchito pamapangidwe okhazikika a PCB

Mu blog iyi, tiwona njira ndi mawerengedwe ofunikira kuti tidziwe momwe matenthedwe amapangidwira a PCB okhazikika.

Popanga bolodi losindikizidwa (PCB), chimodzi mwazinthu zazikulu zomwe mainjiniya amayenera kuziganizira ndikuchita kwake kwamatenthedwe.Ndi kupita patsogolo kofulumira kwaukadaulo komanso kufunikira kopitilirabe kwa zida zamagetsi zophatikizika komanso zamphamvu, kutaya kutentha kuchokera ku PCB kwakhala vuto lalikulu.Izi ndizowona makamaka pamapangidwe okhwima a PCB omwe amaphatikiza zabwino zama board okhazikika komanso osinthika.

Kutentha kwamafuta kumakhala ndi gawo lofunika kwambiri pakuwonetsetsa kudalirika komanso moyo wautali wa zida zamagetsi.Kutentha kwakukulu kungayambitse mavuto osiyanasiyana, monga kulephera kwa chigawo, kuwonongeka kwa ntchito, komanso ngakhale zoopsa za chitetezo.Chifukwa chake, ndikofunikira kuwunika ndikuwongolera magwiridwe antchito a PCB panthawi yopanga.

Nawa masitepe ofunikira pakuwerengera magwiridwe antchito amitundu yokhazikika ya PCB:

1. Dziwani zamafuta otentha: Choyamba, ndikofunikira kusonkhanitsa chidziwitso chofunikira chokhudza momwe matenthedwe amatenthetsera komanso kutentha kwapadera kwazinthu zomwe zimagwiritsidwa ntchito pakupanga kokhazikika kwa PCB.Izi zikuphatikizapo ma conductive zigawo, insulating layers, ndi zina zowonjezera kutentha masinki kapena vias.Makhalidwewa amatsimikizira kuthekera kwa kutentha kwa PCB.

2. Kuwerengera kwa Kukaniza kwa Matenthedwe: Gawo lotsatira likuphatikizapo kuwerengera kukana kwa kutentha kwa zigawo zosiyanasiyana ndi ma interfaces mu mawonekedwe okhwima a PCB.Kukaniza kwa kutentha ndi muyeso wa momwe zinthu kapena mawonekedwe amachitira kutentha.Imawonetsedwa m'mayunitsi a ºC/W (Celsius pa Watt).Kutsika kwa kutentha kwa kutentha, kumapangitsanso kutentha kwabwino.

3. Dziwani njira zotenthetsera: Dziwani njira zowotchera kwambiri pamapangidwe okhwima a PCB.Izi ndi njira zomwe kutentha kochokera kumayendera.Ndikofunika kuganizira zigawo zonse zopangira kutentha monga ICs, zipangizo zamagetsi, ndi zina zilizonse zopangira kutentha.Unikani njira yoyendetsera kutentha kuchokera kugwero la kutentha kupita kumalo ozungulira ndikuwunika momwe zinthu zosiyanasiyana zimakhudzira ndi zigawo panjirayi.

4. Kuyerekezera ndi kusanthula kwa kutentha: Gwiritsani ntchito pulogalamu yowunikira kutentha kuti muyese kutentha kwa kutentha mu kapangidwe ka board-flex board.Zida zingapo zamapulogalamu, monga ANSYS Icepak, SOLIDWORKS Flow Simulation kapena Mentor Graphics FloTHERM, zimapereka luso lapamwamba lofanizira molondola komanso kulosera zamakhalidwe otentha.Zoyezera izi zitha kuthandizira kuzindikira malo omwe atha kukhala otentha, kuyesa njira zosiyanasiyana zamapangidwe ndikuwongolera magwiridwe antchito amafuta.

5. Kukhathamiritsa kwa kutentha kwa kutentha: Ngati kuli kofunikira, choyatsira chotenthetsera chikhoza kuphatikizidwa kuti chiwongolere ntchito yotentha ya mapangidwe okhwima a PCB.Masinki otentha amawonjezera malo omwe amapezeka kuti azitha kutentha komanso kupititsa patsogolo kutentha kulikonse.Kutengera zotsatira zofananira, sankhani kamangidwe koyenera kotengera kutentha, poganizira zinthu monga kukula, zinthu, ndi masanjidwe.

6. Unikani zipangizo zina: Unikani zotsatira za zosankha zakuthupi zosiyanasiyana pa kutentha kwa mapangidwe okhwima a PCB.Zida zina zimatenthetsa bwino kuposa zina ndipo zimatha kupititsa patsogolo mphamvu zotulutsa kutentha.Ganizirani zosankha monga magawo a ceramic kapena zida za PCB zotenthetsera, zomwe zingapereke magwiridwe antchito abwinoko.

7. Kuyesa ndi kutsimikizira kwa kutentha: Pambuyo pomaliza kupanga ndi kuyerekezera, ndikofunikira kuyesa ndikutsimikizira momwe kutentha kumagwirira ntchito.okhwima-flex PCB chitsanzo.Gwiritsani ntchito kamera yotentha kapena ma thermocouples kuti muyeze kutentha pamalo ofunikira.Fananizani miyeso ndi zolosera zongoyerekeza ndikubwerezanso mapangidwe ngati pakufunika.

Mwachidule, kuwerengera kutentha kwa mapangidwe a PCB okhwima ndi ntchito yovuta yomwe imafuna kuganizira mozama zakuthupi, kukana kutentha, ndi njira zotentha.Potsatira njira zomwe zili pamwambazi komanso kugwiritsa ntchito mapulogalamu apamwamba oyerekeza, mainjiniya amatha kukhathamiritsa mapangidwe kuti akwaniritse kutentha koyenera ndikuwongolera kudalirika komanso magwiridwe antchito a zida zamagetsi.

Kumbukirani, kasamalidwe ka kutentha ndi gawo lofunikira la mapangidwe a PCB, ndipo kunyalanyaza kungakhale ndi zotsatira zoyipa.Poika patsogolo mawerengedwe a kutentha kwa kutentha ndi kugwiritsa ntchito njira zoyenera, mainjiniya amatha kuonetsetsa kuti zida zamagetsi zimakhala zazitali komanso zimagwira ntchito, ngakhale pakugwiritsa ntchito movutikira.