Paunenge uchigadzira PCB pads mukati PCB bhodhi dhizaini , inofanirwa kugadzira zvakanyatsoenderana nezvinodiwa uye zviyero.Nekuti muSMT chigamba kugadzirisa, dhizaini yePCB pad yakakosha.Iyo dhizaini yepadhi ichakanganisa zvakananga solderability, kugadzikana uye kupisa kupisa kwezvikamu.Izvo zvine hukama nemhando yekugadzirwa kwechigamba.Zvino chii chinonzi PCB pad dhizaini chiyero? 1. Dhizaini zviyero zvechimiro uye saizi yePCB pads: 1. Fonera PCB standard package raibhurari. 2. Rutivi rushoma rwepadhi harusati rwuri pasi pe 0.25mm, uye hupamhi hwepamusoro hwepadhi yose haisi kupfuura 3 nguva yechikamu aperture. 3. Edza kuve nechokwadi kuti kureba pakati pemicheto yemapadhi maviri yakakura kudarika 0.4mm. 4. Mapedhi ane maburi anodarika 1.2mm kana mapadhi madhayamita anodarika 3.0mm anofanira kugadzirwa semapedhi akaita sedhaimani kana kuti quincunx. 5. Kana iri dense wiring, zvinokurudzirwa kushandisa oval uye oblong connection plates.Iyo dhayamita kana hupamhi hudiki hwepane-padhi padhi ndeye 1.6mm;iyo isina simba-yazvino yedunhu padhi yekaviri-mativi bhodhi inongoda kuwedzera 0.5mm kune gomba dhayamita.Yakakura yakawandisa padhi inogona kukonzera zvisina kufanira kuenderera mberi welding.
PCB pad kuburikidza nehukuru chiyero:
Gomba remukati repadhi rinowanzo kusiri pasi pe 0.6mm, nekuti buri idiki pane 0.6mm haisi nyore kugadzirisa kana uchibaya kufa.Kazhinji, iyo dhayamita yepini yesimbi pamwe ne0.2mm inoshandiswa seyemukati gomba dhayamita yepedhi, senge dhayamita yepini yesimbi yepini yekupikisa Kana iri 0.5mm, mukati megomba dhayamita repadhi rinoenderana ne0.7mm. , uye padhi dhayamita zvinoenderana nepakati gomba dhayamita.
Yetatu, iyo yekuvimbika dhizaini mapoinzi ePCB pads:
1. Symmetry, kuitira kuti ive nechokwadi chekuenzana kwehutano hwepamusoro we solder yakanyungudutswa, mapedhi pamagumo ose anofanira kunge akaenzana.
2. Pad spacing.Yakakura kwazvo kana diki padhi spacing inokonzeresa kusarongeka.Naizvozvo, ita shuwa kuti kupatsanura pakati pechikamu kunopera kana mapini nemapadhi kwakakodzera.
3. Kukura kwakasara kwepadhi, hukuru hwakasara hwechikamu chekupedzisira kana pini uye padhi mushure mekupindirana kunofanira kuva nechokwadi chokuti solder joint inogona kuumba meniscus.
4. Upamhi hwepadhi hunofanira kunge hwakafanana nehupamhi hwechikamu chepini kana pini.
Yakarurama PCB pad dhizaini, kana paine diki skew panguva yekugadziriswa kwechigamba, inogona kugadziridzwa nekuda kwekunetsekana kwepamusoro kwesolder yakanyungudutswa panguva yekuyerera kwekutengesa.Kana iyo PCB pad dhizaini isiriyo, kunyangwe kana nzvimbo yekuisa iri chaiyo, zvirema zvekutengesa senge chikamu chinzvimbo chinobvisa uye mabhiriji ekumisikidza anozoitika nyore mushure mekuyerera kwekutengesa.Naizvozvo, kana uchigadzira PCB, iyo PCB padhi dhizaini inoda kungwarira zvakanyanya.
1.6mm ukobvu ichangoburwa green solder mask goridhe munwe PCB board FR4 CCL redunhu bhodhi
English en 
