Kusanthula Zifukwa Zomwe Kuwala kwa Umboni wa Kuphulika kwa LED Sikuyatsa

Chigawo chilichonse cha chinthu chimakhudza moyo wake, kotero ndikofunikira kuti mbali zonse za zowunikira zikhale zapamwamba kwambiri kuti mupewe zovuta zosiyanasiyana. Makasitomala ambiri omwe nthawi zambiri amagwiritsa ntchito zowunikira zowunikira mwina adakumana ndi izi: kuwala kwa LED kosaphulika kosayatsa. Nchiyani chingayambitse izi? Tiyeni tifufuze limodzi lero!

Electrostatic Discharge (ESD):

Chip cha LED chikhoza kuwonongeka chifukwa cha kutulutsa kwa electrostatic, kupangitsa kuti mphambano ya PN ikhale yosagwira ntchito ndikuwonjezera kutayikira kwapano, kwenikweni kusandulika kukhala resistor. Kupewa kuwonongeka kwa ESD kuzinthu zamagetsi ndi ntchito yofunika kwambiri pamakampani opanga zamagetsi. Nkhani iliyonse pamlingo uliwonse ikhoza kuvulaza Kuwala kosaphulika kwa LED, kumabweretsa kutsika kwa magwiridwe antchito.

Kutha kwa Silver Wire:

Kulumikizana kwa waya wasiliva wamkati mu nyali ya LED kumatha kusweka, kuchititsa kusowa kwa magetsi komanso kuchititsa kuwala kwakufa. Nkhaniyi ingakhudzenso ma LED ena’ ntchito yachibadwa, makamaka chifukwa ma LED amagwira ntchito pamagetsi otsika (1.8V—2.2V yofiira, yellow, ma LED a lalanje; 2.8-3.2V ya buluu, wobiriwira, ma LED oyera) ndipo nthawi zambiri zimalumikizidwa motsatizana kapena zofananira kuti zigwirizane ndi ma voltages osiyanasiyana ogwirira ntchito. Ngati LED imodzi mumzere wozungulira ili ndi kulumikizana kotseguka mkati, mndandanda wonse sudzawunikira, kupangitsa izi kukhala zovuta kwambiri kuposa zina.

Leakage Current:

Kuchulukirachulukira kwapano kumatha kupangitsa kuti mphambano ya PN ilephereke, kuletsa kuwala kwa LED kuti zisaunikire. Nthawi zambiri, nkhaniyi siyikhudza magwiridwe antchito a ma LED ena.

Cold Solder Joint:

Kuzizira kwa solder olowa kumachitika pamene mkanda wa LED, kapena chip, sichigulitsidwa bwino. Kuzindikira izi, Kutentha kwa LED kumabweretsa 200-300 ° C pogwiritsa ntchito chowunikira, kenako chotsani chotenthetsera ndikulumikiza batire ya batani la 3V ku LED mu polarity yoyenera. Ngati nyali ya LED imayatsa koma imachepa pomwe zotsogolera zikuzizira, izi zikusonyeza ozizira solder olowa. Kutentha kumapangitsa chitsulo kuti chiwonjezeke ndikulumikizana ndi mfundo yamkati ya solder, kupangitsa kuwala kwa LED. Monga kutentha amachepetsa ndi zitsulo mgwirizano, kugwirizana kwatha, ndipo LED imazimitsa. Njirayi imakhala yothandiza nthawi zonse pozindikira zolumikizira zozizira.