SMD-resistors: hōʻikeʻano, ka lepili

SMD (kaʻili ua kau ma na manao ') unuhi' ia English o ia hoʻi, "He mea luna ma luna o kaʻili kai." SMD-eiiiiiaiouʻumi manawa uuku ma ka nui a me ke kaupaonaʻana ma mua oʻike mau māhele, ma laila loaʻa i ka pa apŘ oi aku o ka piʻiʻana ma luna o ka paiia kaapuni papa na manao ona. Kēia manawa ka uilaʻoe? Ac? Weliweli iki mai, kekahi o na wahi - mea e emi ai ka pono Ana a me ke kaumaha o na manao ona. SMD-eiiiiiaiou - ma muli o kā lākou i nui, haʻahaʻa waiwai e lilo aku, high quality - loaa i ka nui a hoolaha aku, a ua increasingly ke kūapoʻana panina nā kumumea me ka uea hiki aku ai.

Ka Hawaii photo lalo hōʻike i ka SMD-resistors i kau ma luna o ka PCB. Oe ke ike ia, ma muli o ia ka mea uuku ka nui o na kumu mua loaʻa ke kiʻekiʻe hāʻawe nuʻa. I hookuu i hoʻokomo i ka 'ikamu i loko o ka puka i loko o ka papa, a ua soldered ka SMD-resistors i ka wahi ma luna o ka ili o ka pai huakai kaapuni papa Hoʻokaʻaʻike mau kuamoo i (Piglet), a hoi simplifies ka manao a me kaʻaha kanaka o ka Radio-mīkini uila no. Me ka hiki i ka mauna o ka IeIIeYOA o ka Radio eiiiiiaiou ua i hiki i ka paka i paiia kaapuni papa e ole waleʻeluaʻaoʻao, akā, i nunui-pona, nae ko waho ua like no me ke ahu iho kaka.

hua mai ia ma ka mea kēia hana ma ka hanalima? iecaianoaaiiuo soldering SMD-eiiiiiaiou: ka Track papa e hoʻokaʻaʻike solder noi kūikawā thermopaste (koko ua hui me ka solder pauka), ma hope a ka lopako mea he wahi i loko o ka makemake hehee wale me SMD-resistors. Details hoopili aku i ka solder kāpili ma luna ua laila waiho i loko o ka kūikawā e malama i ka umu kahi ka mea, ua enaena, a hiki i ka makemake ana wela ma i ka solder heheʻe i loko o ke kāpili ma luna evaporates koko. Pela na lāliʻi komo i loko o ka noho. Mahope, i ka PCB ua wehe 'ia mai ke kapuahi, a ho'ēmi.

No ka soldering SMD type eiiiiiaiou i loko o ka hale, e pono ai i ka kēia mau hana: tweezers, i ke kui, pliers, kiʻiona aniani 'ohe me ka mānoanoa kuikele, he soldering hao me ka maikai kōkua, wela ea soldering wahi. Of consumables pono solder, wai koko. He pono, o ka papa, e hoʻohana i ka soldering noaioee, akā, ina e hana ole, e hiki ke kiʻi ma me ka soldering hao. I ka soldering i ka papa kuhikuhiE mea - e pale aku overheating o eiiiiiaiou a me ka PCB. I na kumu mua i ole e hookala mai, a i ole apo la i ka hueloʻawa o ka soldering hao, ka mea e e kaomi ma luna o ka puka o ka papa.

SMD-resistors makana loa he ākea huahelu o ka palena iki Hawaiʻi mai kekahi a hiki i ke kanakolu Ohm megohm. Pae'ōnaehana ana wela o na resistors loli aʻe mai -550 ° C e + 1250 ° C. Power SMD-mea pale mū holapū ihoiho 1w. Ma ka hoʻoulu i ka mana hoonui i ka nohona ma Ana. No ka laʻana, resistors SMD mana 0,05 W mea Ana 0.6 * 0.3 * 0.23 mm o, a me ka mana o ke 1 W - 3.2 * 6.35 * 0.55 mm o.

Peni mau resistors hiki e ana o ekolu ano: huahelu ekolu-, huahelu-eha a me nā huapalapala ekolu.

- ka mua mau huahelu hōʻike i ka waiwai o ka mea pale mū holapū cia ma ohms, a me ka mea hope - i ka helu o nā 'Aʻohe hualoaʻa. No ka laʻana, omaka ma ka mea pale mū holapū 102 o 1000 ohms paha 1k.

- ka mua ekolu huahelu o ka mea pale mū holapū Hōʻike ka palena iki cia ma ohms, a me ka mea hope - i ka helu o nā 'Aʻohe hualoaʻa. No ka laʻana, omaka i ka mea pale mū holapū 5302 o 53 kohm.

- ka mua mau huapalapala hōʻike i ka mea pale mū holapū cia ma ohms palena iki dala, lawe mai i ka papaʻaina ma luna, a me ka hope ano Hōʻike he multiplier waiwai: S = 10-2; R = 10-1; B = 10; C = 102; D = 103; E = 104; F = 105. No ka laʻana, omaka i ka mea pale mū holapū 11C mea 12,7 kohm.