1. Plum blossom pad.

1: Gomba rekugadzirisa rinoda kunge risina-metalized. Munguva yewave soldering, kana gomba rekugadzirisa riri buri rakagadzirwa nesimbi, tini inovhara gomba panguva yereflow soldering.

2. Kugadzirisa maburi ekukwira sema quincunx pads anowanzo shandiswa kukwirisa gomba GND network, nekuti kazhinji PCB copper inoshandiswa kuisa mhangura yeGND network. Mushure mekunge maburi equincunx akaiswa nePCB shell components, chokwadi, GND yakabatana nepasi. Pane dzimwe nguva, PCB shell inoita basa rekudzivirira. Ehe, vamwe havadi kubatanidza gomba rekukwira kune network yeGND.

3. Gomba resimbi rinogona kusvinwa, zvichikonzera kuti zero muganhu wepasi uye ungrounding, zvichiita kuti hurongwa huve husina kujairika. Iyo plum inotumbuka gomba, zvisinei kuti kushushikana kwachinja sei, inogona kugara ichichengeta sikururu pasi.

2. Cross flower pad.

Cross flower pads inonziwo thermal pads, inopisa air pads, etc. Basa rayo nderokuderedza kupisa kwekupisa kwepadhi panguva yekutengesa, kuitira kuti kudzivirira kusvibiswa kwepamusoro kana PCB peeling inokonzerwa nekupisa kwakanyanya.

1 Kana padhi yako yakuyiwa. Iyo yemuchinjikwa pateni inogona kuderedza nzvimbo yewaya yepasi, inonoke kumhanyisa kupisa kwekupisa, uye kufambisa welding.

2 Kana PCB yako ichida kuiswa muchina uye reflow solder muchina, iyo muchinjiko-pattern padhi inogona kudzivirira PCB kubva kusvuuka (nekuti kupisa kwakawanda kunodiwa kunyungudutsa solder paste)

3. pedhi yemisodzi

Misodzi inobatanidza zvakanyanya kudonha pakati pepadhi newaya kana waya uye via. Chinangwa cheiyo teardrop ndechekudzivirira nzvimbo yekubatana pakati pewaya uye padhi kana waya newaya kana bhodhi redunhu rarohwa nechisimba chekunze. Bvisa, kuwedzera, seta misodzi inogonawo kuita kuti PCB yedunhu bhodhi itaridzike yakanakisa.

Basa re teardrop ndere kudzivirira kudzika kamwe kamwe kweiyo chiratidzo mutsara wehupamhi uye kukonzera kuratidzira, izvo zvinogona kuita kuti kubatana pakati peiyo trace uye chikamu padhi kuve shanduko yakatsetseka, uye kugadzirisa dambudziko rekuti kubatana pakati pedhi uye kuteedzera kuri. nyore kuputsika.

1. Paunenge uchitengesa, inogona kuchengetedza padhi uye kudzivisa kudonha kwepadhi nekuda kwekuwanda kwekutengesa.

2. Simbisa kuvimbika kwekubatana (kugadzirwa kunogona kudzivirira kusaenzana etching, kutsemuka kunokonzerwa nekutsauka, nezvimwewo)

3. Smooth impedance, kuderedza kusvetuka kwakapinza kwe impedance

Mukugadzirwa kwebhodhi redunhu, kuitira kuti padhi ive yakasimba uye kudzivirira padhi uye waya kubva pakubviswa panguva yekugadzira michina yebhodhi, firimu remhangura rinowanzoshandiswa kuronga nzvimbo yekuchinja pakati pedhi uye waya. , iyo yakaita segwenzi remisodzi, saka inowanzonzi Madonhwe emisodzi (Teardrops)

4. giya rekuburitsa

Wakamboona vamwe vanhu vachichinja magetsi vachichengeta nemaune sawtooth isina foil yemhangura pasi pe common mode inductance? Chii chakanyatsoitika?

Izvi zvinodaidzwa kuti zino rekuburitsa, gap rekuburitsa kana spark gap.

Spark gap ipeya yemakona matatu ane makona akapinza akanongedza kune imwe neimwe. Chinhambwe chikuru pakati peminwe i10mil uye shoma i6mil. Imwe delta yakadzikwa, uye imwe yakabatana nemutsara wechiratidzo. Gonyonhatu iyi haisi chikamu, asi inogadzirwa nekushandisa mapepi emhangura akaturikidzana muPCB routing process. Aya matatu matatu anofanirwa kuiswa pamusoro pechikamu chePCB (componentside) uye haakwanise kuvharwa nemasolder mask.

Muyedzo yekugezesa magetsi ekupa bvunzo kana ESD bvunzo, yakakwira voltage inogadzirwa kumagumo ese eiyo common mode inductor uye arcing ichaitika. Kana iri pedyo nemichina yakapoteredza, michina yakapoteredza inogona kukuvara. Naizvozvo, chubhu yekuburitsa kana varistor inogona kubatanidzwa mukuenderana kudzikamisa voltage yayo, nekudaro ichitamba basa rekudzima arc.

Mhedzisiro yekuisa michina yekudzivirira mheni yakanaka kwazvo, asi mutengo wakakwira. Imwe nzira ndeyekuwedzera kuburitsa mazino pamigumo yese yeakajairika-modhi inductor panguva yePCB dhizaini, kuitira kuti inductor aburitse kuburikidza nematipi maviri ekuburitsa, kudzivirira kubuda kuburikidza nedzimwe nzira, kuitira kuti zvakatenderedza Uye pesvedzero yeakazotevera nhanho michina ideredzwe.

Iyo gap yekuburitsa haidi imwe mari. Inogona kukweverwa kana kudhirowa pcb bhodhi, asi zvakakosha kuziva kuti rudzi urwu rwekuburitsa gap imhepo-yemhando yekuburitsa gap, inogona kushandiswa chete munzvimbo iyo ESD inombogadzirwa. Kana ikashandiswa muzviitiko zvinowanzoitika ESD, madhipoziti ekabhoni anogadzirwa pamapoinzi maviri ari matatu pakati pemageji ekuburitsa nekuda kwekubuda kunowanzoitika, izvo zvinozopedzisira zvakonzera kupfupika mugeji rekuburitsa uye kukonzera kupfupi-kutenderera kwechiratidzo. mutsetse pasi. Zvichikonzera kukanganisa kwehurongwa.