Sei Kunyudza Goridhe uye Goridhe Plating Inodiwa paPCBs?

PCB Surface Kurapa

• Antioxidant treatment, tin spraying, lead-free tin spraying, gold plating, tin plating, silver plateing, hard gold plateing, full-board gold plateing, zvigunwe zvegoridhe, nickel-palladium-goridhe.
• OSP (Organic Solderability Preservatives): Mutengo wakaderera, wakanaka solderability, yakasimba kuchengetedza mamiriro, pfupi nguva yekuchengetedza, nharaunda inoshamwaridzana maitiro, yakanaka soldering, uye flatness.
• Tin Spraying: Tin-sprayed mapuranga anowanzo nhurikidzwa zhinji (4-60 layers) yakakwirira-chaiyo PCB samples, iyo yakashandiswa neakawanda makuru ekutaurirana epamba, komputa, midziyo yekurapa, mabhizinesi emuchadenga, uye zvikamu zvekutsvagisa.
• Gold Fingers: Kubatanidza zvikamu pakati pememory module uye memory slot pane memory module, kuburikidza iyo masaini ese anofambiswa. Yakagadzirwa neakawanda egoridhe conductive contact zvidimbu zvakarongwa seminwe nekuda kwekuiswa goridhe pamusoro.
• Gold Fingers Manufacturing: Inosanganisira kuisa chidimbu chegoridhe kubhodhi-yakapfeka bhodhi kuburikidza nenzira yakakosha. Ndarama inosarudzwa nekuda kwayo kwakasimba oxidation kuramba uye conductivity. Nekudaro, nekuda kwekudhura kwegoridhe, ndangariro zhinji parizvino dzinoshandisa tin plating panzvimbo, iyo yakatanga muma1990s. Iwo "minwe yegoridhe" yemabhodhi eamai, ndangariro, makadhi emifananidzo, uye zvimwe zvishandiso zvave kunyanya kugadzirwa nerata, iine imwe chete-yepamusoro-inoshanda sevha / yekushandira zvinhu zvinoramba zvichishandisa goridhe plating, iyo inodhura zvakasikwa.

Sei Uchishandisa Gold-Plated Boards

Nekuwedzera kwekubatanidzwa kweICs, huwandu hwemapini eIC huri kuwedzera uye hunowedzera kusimba. Tekinoroji yekupfapfaidza tin yakatwasuka inoita kuti zvive zvakaoma kupwanya majoini e solder akatsetseka, izvo zvinounza matambudziko pakuungana kweSMT . Pamusoro pezvo, nguva yekuchengeta mabhodhi akapfapfaidzwa tin ipfupi kwazvo. Mabhodhi akaputirwa negoridhe anogadzirisa matambudziko aya.

Yepamusoro-soro tekinoroji, kunyanya ye0603 uye 0402 Ultra-diki-diki pamusoro penzvimbo yekumisikidza, kupfava kwemajoini ekutengesa kunokanganisa zvakananga kunaka kweiyo solder paste kudhinda maitiro, ayo ane simba rinogadzirisa pamhando yeinotevera reflow soldering process. Naizvozvo, yakazara-bhodhi goridhe plating inowanzoonekwa mune yakakwira-density uye yekupedzisira-diki pamusoro pekukwira tekinoroji.

Munguva yedanho rekugadzira muyedzo, nekuda kwezvinhu zvakaita sekutengwa kwechikamu, bhodhi kazhinji haitengeswi nekukurumidza kana yasvika, asi kazhinji inofanirwa kumirira kwemavhiki mashoma kana kunyange mwedzi mishoma isati yashandiswa. Upenyu hwemasherufu emapuranga ane goridhe akareba kakawanda kupfuura ayo e-lead-tin alloy, saka munhu wese anoda kuashandisa.

Uyezve, mutengo wegoridhe-akapfatwa maPCB padanho remuenzaniso wakada kufanana neiyo yemabhodhi elead-tin alloy. Nekudaro, neiyo wiring ichiwedzera uye yakawanda, upamhi hwemutsara uye spacing yasvika 2-4 mils. Izvi zvaunza dambudziko regoridhe mapfupi maseketi: Sezvo frequency yechiratidzo ichiwedzera, mhedzisiro yeganda mhedzisiro yekufambiswa kwechiratidzo pakati peakawanda plating layer inova pachena. Chimiro cheganda chinoreva: kune yakakwira-frequency AC, ikozvino inoyerera inofamba pamusoro peiyo conductor. Maererano nekuverenga, kudzika kweganda kunobatana nehuwandu.

Sei Uchishandisa Goridhe Kunyudzwa Mabhodhi

Kugadzirisa matambudziko ari pamusoro egoridhe plating board, maPCB anoshandisa kunyudzwa kwegoridhe ane anotevera maitiro:

1. Nekuda kwekuti chimiro chekristaro chinoumbwa nekunyudzwa kwegoridhe chakasiyana neicho chekunyudzwa kwegoridhe, kunyudzwa kwegoridhe kunowedzera yeyero pane plating yegoridhe, iyo vatengi vanogutsikana nayo.

2. Nekuti chimiro chekristaro chinoumbwa nekunyudzwa kwegoridhe chakasiyana neicho chegoridhe rakanyudzwa, kunyudzwa kwegoridhe kuri nyore kutengesa pane kunyura kwegoridhe uye hakuzokonzerese kukanganisa kwekutengesa, zvichitungamira kune kunyunyuta kwevatengi.

3. Nekuti chete mapadhi ebhodhi kunyudzwa kwegoridhe ane nickel-goridhe, iyo chiratidzo chekufambisa muchiitiko cheganda chiri mumhangura yemhangura uye haizokanganisa chiratidzo.

4. Nekuda kwekuti chimiro chekristaro chekunyudzwa kwegoridhe chakaomarara pane icho chegoridhe, kashoma kuita oxidize.

5. Nokuti chete mapedhi ebhodhi kunyudzwa kwegoridhe ane nickel-goridhe, hapazovi nekabudura yewaya yegoridhe, idiki-shorts.

6. 5Nekuti mapedhi ebhodhi ekunyudzwa kwegoridhe chete ane nickel-goridhe, musanganiswa wesolder unopikisa pane zvakasara uye ndarira yemhangura inochengetedzeka zvakanyanya.

7. Kana CAM engineering ikaita muripo, nzvimbo yacho haizokanganisika.

8. Nekuti chimiro chekristaro chekunyudzwa kwegoridhe chakasiyana neicho chegoridhe plating, kushushikana kwayo kuri nyore kudzora, izvo zvinonyanya kukonzeresa kusungirirwa kwechisungo chezvigadzirwa zvakasungwa. Panguva imwecheteyo, nekuti kunyudzwa kwegoridhe kwakapfava pane kunyudzwa kwegoridhe, mabhodhi ekunyudza egoridhe haamire kana akashandiswa seminwe yegoridhe.

9. Kutapa nekugara kwesherufu yemapuranga ekunyudza egoridhe akanaka seaya emapuranga egoridhe.

Goridhe Immersion Boards vs. Gold Plating Boards

Kutaura zvazviri, maitiro ekuisa goridhe anogona kukamurwa kuita mhando mbiri: goridhe rakaputirwa nemagetsi uye goridhe rekunyudza. Pamaitiro ekuisa goridhe, simba rayo rekunyudza rinodzikira zvakanyanya, nepo simba rekuisa goridhe rekunyudza riri nani. Kunze kwekunge mugadziri achida bonding, vagadziri vazhinji vanosarudza nzira yekuisa goridhe rekunyudza! Kazhinji, maitiro akajairika ekuisa maPCB pamusoro ndeaya anotevera: kuisa goridhe (goridhe rakaputirwa nemagetsi, goridhe rekunyudza), kuisa sirivha, OSP , kupfapfaidza netin (ne lead uye isina lead). Mabatirwo aya anonyanya kuitwa nezvinhu zveFR-4 kana CEM-3, uye kune maitiro ekuisa pamusoro pezvinhu zvakagadzirwa nemapepa uye pine rosin coatings. Kana tinning isina kunaka (kudya tin) ikasabviswa, zvikonzero zvinosanganisira kugadzirwa kwe solder paste nemugadziri wepatch uye maitiro ezvinhu. Kune matambudziko ePCB, pane zvikonzero zvakati wandei:

• Kunyangwe paine firimu remafuta paPAN panguva yePCB kudhinda, iyo inogona kuvharira tinning mhedzisiro; izvi zvinogona kusimbiswa netinning bvunzo.
• Kunyangwe iyo lubrication paPAN inosangana nezvinodiwa dhizaini, ndiko kuti, ingave solder pad dhizaini inogona kunyatso simbisa mhedzisiro yerutsigiro yezvikamu.
• Kunyangwe iyo solder pad yakasvibiswa, inogona kutariswa neiyo ion kusvibiswa kuyedzwa.

Aya mapoinzi matatu ari pamusoro ndiwo akakosha anoonekwa nevagadziri vePCB. Nezve zvakanakira uye zvakaipira nzira dzinoverengeka dzekurapa pamusoro, imwe neimwe ine simba rayo uye kushaya simba! Panyaya yekuputirwa negoridhe, inogona kuwedzera nguva yekuchengetedza yePCB, uye shanduko yekunze kwekunze tembiricha uye hunyoro idiki (zvichienzaniswa nemamwe marapirwo epamusoro), uye inogona kuchengetwa kwerinenge gore; Tini yekupfapfaidza pamusoro pekurapa ndeyechipiri, OSP ndiyo inotevera, uye maviri aya marapirwo epamusoro anoda kutarisisa zvakanyanya kune tembiricha yezvakatipoteredza uye nguva yekuchengetedza mwando.

Kazhinji, sirivheri plating pamusoro kurapwa kwakasiyana, nemutengo wepamusoro, zvakanyanya kuomesesa mamiriro ekuchengetedza, inoda kurongedza nemapepa asina sarufa! Uye nguva yekuchengetedza inenge mwedzi mitatu! Panyaya yetinning mhedzisiro, kunyudza goridhe, OSP, uye kupfapfaidza kwerata zvakangofanana, uye vagadziri vanonyanya kufunga nezve mutengo-unoshanda!