Kuthetsa Mavuto a Common Chip Resistor Soldering mu PCB

Tsegulani:

Chip resistors ndi zinthu zofunika zomwe zimagwiritsidwa ntchito pazida zambiri zamagetsi kuti zithandizire kuyenda bwino komanso kukana. Komabe, monga gawo lina lililonse lamagetsi, ma chip resistors amatha kukumana ndi zovuta zina panthawi ya soldering.Mu blog iyi, tikambirana za zovuta zomwe zimafala kwambiri mukamagwiritsa ntchito ma solder chip resistors, kuphatikiza kuwonongeka kwa ma surges, zolakwika za kukana kuchokera ku ming'alu ya solder, resistor vulcanization, ndi kuwonongeka chifukwa chakuchulukirachulukira.

1. Kuwonongeka kwakukulu kwa zopinga za chip filimu:

Kuthamanga, kuwonjezeka kwadzidzidzi kwamagetsi, kungakhudze kwambiri magwiridwe antchito ndi kulimba kwa zopinga zamtundu wa chip. Pamene mawotchiwa achitika, mphamvu zambiri zimatha kuyenda kudzera muzitsulo, zomwe zimayambitsa kutentha kwambiri ndipo pamapeto pake zimawononga. Kuwonongeka kumeneku kumawonekera ngati kusintha kwa mtengo wotsutsa kapena ngakhale kulephera kwathunthu kwa resistor. Chifukwa chake, ndikofunikira kusamala kuti musamawotchere.

Kuti muchepetse chiwopsezo cha kuwonongeka komwe kumachitika chifukwa cha maopaleshoni, lingalirani kugwiritsa ntchito chipangizo choteteza maopaleshoni kapena suppressor. Zidazi zimapatutsa mphamvu zambiri kutali ndi chip resistor, potero zimateteza kuti zisawonongeke. Komanso, onetsetsani kuti zida zanu zowotcherera zakhazikika bwino kuti mawotchi asachitike.

2. Vuto la kukana kwa chip resistors chifukwa cha ming'alu yowotcherera:

Panthawi ya soldering, ming'alu imatha kupanga ma chip resistors, zomwe zimapangitsa kuti zikhale zolakwika. Ming'alu iyi nthawi zambiri imakhala yosawoneka ndi maso ndipo imatha kusokoneza kulumikizana kwamagetsi pakati pa ma terminal pads ndi chinthu chotsutsa, zomwe zimapangitsa kuti pakhale kukana kolakwika. Zotsatira zake, ntchito yonse ya chipangizo chamagetsi ikhoza kukhudzidwa molakwika.

Kuti muchepetse zolakwika zomwe zimayambitsidwa ndi kuwotcherera ming'alu, njira zingapo zodzitetezera zitha kuchitidwa. Choyamba, kukonza magawo opangira kuwotcherera kuti agwirizane ndi zofunikira za chip resistor kumathandiza kuchepetsa chiwopsezo chosweka. Kuonjezera apo, njira zamakono zojambulira monga kuwunika kwa X-ray zimatha kuzindikira ming'alu isanawononge kwambiri. Kuyang'anira kuwongolera kwaubwino kuyenera kuchitidwa pafupipafupi kuti azindikire ndikutaya zopinga za chip zomwe zimakhudzidwa ndi ming'alu ya solder.

3. Vulcanization ya resistors:

Vulcanization ndi vuto lina lomwe limakumana ndi ma solder a chip resistors. Imatanthawuza njira yomwe zida zodzitetezera zimasinthidwa ndi mankhwala chifukwa cha kutentha kwanthawi yayitali komwe kumapangidwa panthawi yowotcherera. Sulfidation ingayambitse kutsika kwa kukana, kupangitsa kuti chotsutsacho chisakhale choyenera kugwiritsidwa ntchito kapena kuchititsa kuti dera lizigwira ntchito molakwika.

Pofuna kupewa sulfidation, ndikofunikira kukhathamiritsa magawo a soldering monga kutentha ndi nthawi yake kuti asapitirire malire omwe akulimbikitsidwa a chip resistors. Kuphatikiza apo, kugwiritsa ntchito radiator kapena makina oziziritsa kungathandize kuthetsa kutentha kwakukulu panthawi yowotcherera ndikuchepetsa kuthekera kwa vulcanization.

4. Zowonongeka chifukwa chakuchulukirachulukira:

Vuto lina lodziwika bwino lomwe lingabwere panthawi ya soldering ya chip resistors ndi kuwonongeka komwe kumachitika chifukwa chodzaza. Ma chip resistors amatha kuonongeka kapena kulephera kwathunthu akakumana ndi mafunde apamwamba omwe amapitilira kuchuluka kwawo. Kuwonongeka koyambitsidwa ndi kulemetsa kumatha kuwoneka ngati kusintha kwa mtengo wokana, kupsinjika kwamphamvu, kapena kuwonongeka kwakuthupi.

Kupewa kuwonongeka chifukwa chakuchulukirachulukira, ma chip resistors amayenera kusankhidwa mosamala ndi mphamvu yoyenerera kuti athe kuthana ndi zomwe zikuyembekezeredwa. Kumvetsetsa zofunikira zamagetsi pakugwiritsa ntchito kwanu ndikuwerengera zolondola kungathandize kupewa kudzaza ma chip resistors panthawi ya soldering.

Pomaliza:

Soldering chip resistors imafuna kuganizira mozama zinthu zosiyanasiyana kuti zitsimikizire kugwira ntchito moyenera komanso moyo wautali. Pothana ndi zomwe zakambidwa mubulogu iyi, zomwe ndi kuwonongeka komwe kumachitika chifukwa cha ma surges, zolakwika zokakamira zomwe zimayambitsidwa ndi ming'alu ya solder, resistor sulfuration, ndi kuwonongeka komwe kumachitika chifukwa chakuchulukirachulukira, opanga ndi okonda zamagetsi amatha kuwongolera kudalirika ndi magwiridwe antchito a zida zawo zamagetsi. Njira zodzitetezera monga kugwiritsa ntchito zida zodzitchinjiriza, ukadaulo wozindikira ming'alu, kukhathamiritsa magawo a soldering, ndi kusankha zopinga zomwe zili ndi mphamvu zoyenera zitha kuchepetsa kwambiri kuyambika kwa mavutowa, potero kuwongolera magwiridwe antchito a zida zamagetsi pogwiritsa ntchito chip resistors.