In PCB Kapangidwe, ESD kukana kwa PCB kumatha kuzindikirika kudzera pakukhathamiritsa, kukonza bwino ndikuyika. Pakukonzekera, kusintha kwamapangidwe ambiri kumangokhala kungowonjezera kapena kuchotsa zigawozo mwa kuneneratu. Mwa kusintha mawonekedwe a PCB ndi zingwe, ESD imatha kupewedwa.

Mphamvu zamagetsi zochokera mthupi la munthu, chilengedwe komanso ngakhale zida zamagetsi zimatha kuwononga tinthu tating’onoting’ono tating’onoting’ono tating’onoting’ono, monga kulowa mkati mwazitsulo zosanjikiza mkati mwazinthu; Kuwonongeka kwa zipata za MOSFET ndi CMOS zigawo; Choyambitsa loko mu CMOS chipangizo; Kusiyanitsa kwakanthawi kochepa PN mphambano; Kukonda kwakanthawi kochepa kwa PN mphambano; Sungunulani waya wothandizira kapena waya wa aluminiyumu mkati mwa chida chogwirira ntchito. Pofuna kuthana ndi kusokonekera ndi kuwonongeka kwa ma electrostatic discharge (ESD) pazida zamagetsi, ndikofunikira kutenga njira zingapo zaluso kuti muteteze.

Momwe mungapangire ntchito yotsutsa-ESD pakupanga kwa PCB

Mu kapangidwe ka bolodi la PCB, anti-ESD kapangidwe ka PCB imatha kuzindikirika kudzera pakukhazikitsa, kukonza koyenera ndi kukhazikitsa. Pakukonzekera, kusintha kwamapangidwe ambiri kumangokhala kungowonjezera kapena kuchotsa zigawozo mwa kuneneratu. Mwa kusintha mawonekedwe a PCB ndi zingwe, ESD imatha kupewedwa. Nazi njira zina zodzitetezera.

Gwiritsani ntchito ma PCBS angapo ngati kuli kotheka. Ndege zapansi ndi zamagetsi, komanso mizere yolumikizana yolimba, imatha kuchepetsa kupindika kosakanikirana komanso kulumikizana ndi 1/10 mpaka 1/100 kwa PCB yofananira ndi kuyerekezera ndi PCB yachiwiri. Yesetsani kuyika chizindikiro chilichonse pafupi ndi mphamvu kapena pansi. Ma PCBS okhala ndi zinthu zazitali kwambiri pamwamba ndi pansi, zolumikizana kwambiri, ndikudzaza nthaka, lingalirani kugwiritsa ntchito mizere yamkati.

Kwa ma PCBS okhala mbali ziwiri, amagwiritsidwa ntchito mwamphamvu zamagetsi ndi ma grids. Chingwe cha magetsi chili pafupi ndi nthaka ndipo chiyenera kulumikizidwa momwe zingathere pakati pa mizere yopingasa ndi yopingasa kapena malo odzaza. Kukula kwa gridi mbali imodzi kudzakhala kochepera kapena kofanana ndi 60mm, kapena ochepera 13mm ngati kungatheke.

Onetsetsani kuti dera lirilonse ndi lophatikizana momwe zingathere.

Ikani zolumikizira zonse pambali momwe zingathere.

Ngati ndi kotheka, yalutsani chingwe champhamvu kuchokera pakatikati pa khadi kutali ndi madera omwe ali ndi ESD.

Pamagawo onse a PCB pansipa cholumikizira chomwe chimatuluka pamlanduwo (sachedwa kuwongolera ESD), ikani chassis yayikulu kapena polygon yodzaza pansi ndi kuzilumikiza pamodzi ndi mabowo pafupifupi 13mm.

Mabowo okwezera amayikidwa m’mphepete mwa khadi, ndipo mapadi apamwamba ndi apansi otseguka amalumikizidwa pansi pa chassis mozungulira mabowo omwe akukwera.

Mukamasonkhanitsa PCB, musagwiritse ntchito solder iliyonse pamwamba kapena pansi. Gwiritsani ntchito zomangira ndi ma washer omangidwa kuti muphatikize mwamphamvu pakati pa PCB ndi chassis / chishango chachitsulo kapena chithandizo pansi.

Malo omwe “kudzipatula” omwewo akuyenera kukhazikitsidwa pakati pa chassis ndi pansi pozungulira pamizere iliyonse; Ngati kuli kotheka, sungani malo pakati pa 0.64mm.

Pamwamba ndi pansi pa khadi pafupi ndi dzenje lokweralo, polumikiza nthaka ya chassis ndi dera lozungulira ndi ma waya 1.27mm mulifupi 100mm iliyonse pama waya oyambira. Pafupi ndi malo olumikiziranawa, pedi kapena kabowo kokhazikitsira kamene kamaikidwa pakati pa chassis pansi ndi dera lozungulira. Maulalo apansiwa amatha kudula ndi tsamba kuti akhalebe otseguka, kapena kulumpha ndi maginito mikanda / ma frequency capacitors ambiri.

Ngati bolodi la dera silingayikidwe mu chassis yachitsulo kapena chida chotetezera, waya wapamwamba ndi wotsika pansi wa chassis wa bolodiyo sangathe kukulungidwa ndi kukana kwa solder, kuti athe kugwiritsidwa ntchito ngati ma elekitirodi a ESD arc.

Mphete imayikidwa mozungulira dera motere:

(1) Kuphatikiza pa cholumikizira chakumapeto ndi chassis, gawo lonse la mphete limafikira.

(2) Onetsetsani kuti m’lifupi mwake zigawo zonse ndizapamwamba kuposa 2.5mm.

(3) Mabowo amalumikizidwa mu mphete 13mm iliyonse.

(4) Lumikizani nthaka yozungulira ndi nthaka yofananira yamagawo angapo.

(5) Kwa mapanelo awiri omwe amaikidwa munthumba zachitsulo kapena zida zotetezera, nthaka ya mpheteyo izilumikizidwa kumalo omwe onsewa amakhala. Dera lokhala ndi mipanda iwiri osalumikizidwa liyenera kulumikizidwa ndi nthaka ya mpheteyo, nthaka ya mpheteyo siyiyenera kutenthedwa ndi kutuluka, kuti mpheteyo ikhale ngati ndodo yotulutsa ESD, osachepera 0.5mm mulifupi pamtunda zigawo), kuti tipewe kuzungulira kwakukulu. Kulumikizana kwama siginecha sikuyenera kukhala kochepera 0.5mm kutali ndi mpheteyo.