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E 5, 2017

Huakai kaapuni Ocean E hai mai oe i ka manawa / no ke aha la (ole) e hoʻohana Tantalum capacitors. Pros, Con, ka papa haʻawina

Image hopena no ka tantalum mea pihana hoʻohana

I ka / no ke aha la (ole) e hoʻohana Tantalum capacitors. Pros, Con, ka papa haʻawina

A mau pule aku nei au hana ma ka Altium SMPS manao holo ana mai FEDEVEL kula kēia, a ua haʻalele iki pāhana iaʻu me ka ninau unresolved. Somehow au la i ka manaʻo i loko o ka makahiki i hala iho nei mau i tantalum capacitors i ia e käpae ', aole loa maoli ka ike ole i ke kumu. Akā, e ho'āʻo i ka imi i ka 330uF, 6.3V mea pihana me ~ 4mOhm ESR a oe e loaʻa ia tantalum mea holo nōhie ka wale koho. No laila au makemake aku e hoʻomaka i ke kūkākūkā e pili ana i tantalum papale a me ka papa kuhikuhiE nīnau i:

- I ka wa a ke kumu e hoʻohana tantalum capacitors?
- No ke aha la pakele hoʻohana tantalum capacitors?
- ka papa haʻawina e tantalum capacitors me pros a me Con.

Au i kekahi poe ola, noiʻi mua aʻaneʻi ka hōʻuluʻulu manaʻo o ka mea aʻu i hulina loaʻa ai mamao

No ke aha la a me ka wā e hoʻohana tantalum capacitors?
Tantalum ua hoʻohana 'ia no ka ho okumu ana i ka poe liilii, pepa paia capacitors me' nui 'capacitance. Ke hoʻohālikelike i nā mea i ka'okesaside, ahu iho hiki e he lahilahi. No laila, no nā palapala noi kahi pcb liuliu, ua kaupalena '(e like lawe lima kaul) e ka mea, i ka i hele aku i ke' ano o ka mea pihana ka wā pālolo 'aʻole e oki ia hou.

I tantalum capacitors hiki ke hana ia me he uuku ESR. 'O kēia ke kumu ka mea i hoʻohana i ka hailonaʻana i loko o (kūloko) ua hō'ā mana lako me bulk mea pihana. Pālolo i ke ahiahi, ma lalo ESR, akā, ma ka mana lako regulators i paha eʻoi aku ka haʻahaʻa no ka loop kumupaʻa.

No ke aha pakele hoʻohana tantalum capacitors?
Mai ka mea aʻu e loaʻa kēia mau mea i ka kumu nui e pale aku tantalum capacitors i loko o kou mea i manao ai.

kālā:
Tantalum capacitors i kŘpa a pipiʻi, a hiki i ka wa a lako hou, a koi e 'O ke kaulike. 'Aʻole i lōʻihi aku nei kumukūʻai hele lani kiʻekiʻe no i ka shortage ma ka maka mea.

pono:
Aia nā hōʻike lehulehu o ka tantalum capacitors spontaneously combusting. Au i i heluhelu i loko o keia kekahi hou, akā, lawe au ia kekahi hālāwai lala ke elaborate ma keia.

pono:
Mai kekahi o ka mea nui tantalum na mea i eliia (columbite-tantalite / coltan) mines i ke aupuni 'o kue ana cii (e like aupuni Repubalika o Kongo) no laila kekahi hoʻopaʻapaʻa hiki ia tantalum mea he kaua mea pōhaku. I au i ka oiaio nae i ka mea nui i keia manawa helu i keia la, e like me ka mea, ua nui mines na wahi e ae ma ka honua pū.
Tantalum mea he kaumaha metala, a me ka meaʻawahia, aʻaʻole maoli nō hoʻi no ke kaiapuni. huli i kekahi pepa ma ka AVX i kūkākūkā 'uliuli' tantalum enehana nae au i hana ai.

Ka papa haʻawina e tantalum capacitors a me pros a me ka hooluolu mai?
Niobium papale
Kaawale mai ka i hoike ia au i ole i hiki ke huli pono keia mau ike nae, ke kaʻawale mai ia he mea nui Niobium mea e hoohehee ai i loaʻa i e e Niobium papale ho'ēmi. Ma ka 'ē aʻe lima Coltan ua i hoʻohana no ka hoʻouku Niobium no laila paha ka kaua UAOAaIOIUE ke pili' aneʻi pū?

(Pulu) Aluminum Electrolytic papale (Elco)
I Kekahi Mau haʻahaʻa-ESR Elcos hiki ke hoʻohana. Nui cia, nui ripple he pane lākiō, nui anakahi uila lākiō i i kekahi mau pomaikai. Au pono ae aku nae i ka au ike i ua ole au ike SMT Elcos i ou wahi lihi iki ma waho consumer kapa. Aole anei au i koʻu nalo i kekahi mea?

Pīlali (paa) Aluminum papale
Hoʻohana 'ia e like me ka in- a auaiaea holo alaʻokoʻa papale ma SMPSs. Nui Hawaiʻi wale nō i loaʻa i loko o ka poe liilii, anakahi uila lākiō i. Au i ike ma i ka nui o kēia mau pono e derated nae. Pono ia i hoʻoikaika i ka ina e ike hou aku e pili ana i keia ano o ka papale.

Monolytic pālolo papale
Nui anakahi uila lākiō i, uuku derating, a kiekie ae rippleʻikena lākiō i mea i waena o kona pomaikai like e tantalum papale. Mai ka ESR mea nui lower he uuku mawaho ia'ku i e pono ai no ka loop kumupaʻa ma SMPS manao.

kumu
Eia kekahi o ka 'Ikepili aʻu i loaʻa. Aia He He hailona ia e loaʻa, a me oe Kuahiwi O ua kanana oia ia e kiʻi i ka 'Ikepili' oe makemake kekahi. I komo i ka makahiki o ka hana hoʻopuka puke ka wā i loaʻa, mai ka makahiki kakaikahi i loko o kā mākou hana 'o ia hoʻi puu o ka loli.

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Koʻu manao ma ia mea he mea nō he ikaika stigma mai ka 1980 ka - 1990 o kahi e pau ole'āpana o ka ho'āʻo kapaʻo Rose i ka tantalum shorting mai i ka lako hou i hoino aku a loa, a me ka mea hope iki o ka ho'āʻo kapa aʻu i ho'āla hou aʻelaʻo ka luna o 30 emi ana malalo iho tantalum ka, kahi ka mea, ia ia no ka decoupling kahi loina kekahi kahi haʻahaʻa lawa ia pālolo hiki i ua hoʻohana. (Ua heʻikena kaupalena 'E kuapo-ano ana e haawi mai i ka io e alakai kae ina mea i kipaku nui nui o ka haawe ana, a ia paha kūpono i ke puhi kekahi ma hope o ka' ē aʻe.)

i loko o ia hihia, kokoke a pau o ia wahi auou caiaiai me ka electrolytic ma laua me ka pālolo, (kiʻekiʻe māmā ke kūpili) a me ka papu pālolo ma kona iho, a aole nae au i i hele a ho'āʻo i ka transient pane ana o ka papa, kona hauʻoli e hana .

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Tantalams ua nui. Ua hoʻohana mākou iā lākou i loko o mākou nā huahana no ma 30 makahiki, a hiki i ka lā ua, aole i ke kahua ole o kekahi ka lōʻihi hewa ole ia mau hana a hiki i ka pa alima ole. Ae, kona i koe ma stigma, mai nā lā mai o ka wa kahiko. I ka poʻe e accidental e hoʻouka ia ia ma ka hope i ka haʻahaʻa impedance wahi i puhi ai, e explode ka mea, me ka uuku ke ahi mea poepoe. La lakou nae e nui ka pila ihoiho. Au i kekahi aole ike kekahi liu wā papahana me ka pono. E na hana e pili ana i 6 ma kela mea hookahi i kekahi o ko mākou mau papa, a ua kuai mai 1500 e 3000 i ka makahiki o ia no ka hapanui o ka mea hope 30 makahiki. No ka mea o ka lilo nae ke kaupalena mākou hoʻohana 'ana o ia mau mea i ka palapala noi ma lalo o 35 volts a me 10 Bufa. Luna i kā lākou aʻe i ke kānāwai o ko lakou kiolaia hoike Hehe.

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Tantalums i holo nōhie hopeʻia e kali, e hele aku. Oxidizer + wahie. Oe Kuahiwi O Pono i ka pāʻana i ka uku o ka papa e kahe ana i loko o ia paha ka mea, e ignite. Nana e hoole ai kaʻa hoʻi ua kekahi e noi ana no ka pilikia. e puhi lakou pono ma ka papa a explode i loko o kou maka (nā hana no ia iaʻu, a laila ua i koʻu hewa). Ma waho i ua loaʻa i ka maka mea i loko o ka wahi kahi ano mea ia e malamaia.

Kēia manawa ka loaʻa maoli nō ka mea, aohe kumu e hoʻohana tantalum papale.

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All electrolytic capacitors mea i hoʻoponopono 'ho okumu i a me ka hoʻoponopono' hou dielectric papa.

Ka pilikia a me tantalums mea ina nui au i ka 'ae' ia e kahe ana ma ka hewa iki i loko o ka dielectric ka IIeEeAIEUIeXAIIUE paio hahana maoli nō ke i hou pōʻino i ka hana hou ana. Ka poino hiki i thermal uhu, a kokololio nalu p 'ole.

No ia kumu ka mea, mea naaupo, e hoʻohana tantalums ma haʻahaʻa impedance wahi i puhi ai i ke Kumu o ka hailonaʻana o ka papa, a akamai i ka kūpono kou underrate lākou anakahi uila ina oe e. Kekahi Manufacturers paipai aku pepa moʻo resistors e kaupalenaʻikena aʻo kā lākou haʻahaʻa ESRʻano pointless.

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Tantalum ua maoli wale hoʻohana 'ia kahi e pono aiʻoi loa liʻiliʻi, a me ke anakahi uila pane lākiō mea i kekahi mea i ole loa e e oi, a me kahi au loa pili i kekahi nana e hoole anakahi uila iā ia,ʻaʻohe mea pehea pokole. Oe e pono ai, e kali ka mana i loko o ia mau mea, akā, inā e derate anakahi uila lawa ka mea, i ke kiʻekiʻe loaʻikena nona iho.

Au auou caiaiai he 1000uF 16V electrolytic ma luna o koʻu PC mana lako hookahi me ka 10uF 25V pulu slug tantalum mokuna, e like me aʻu i pono ai i ka mea pihana a me keia i ka mea wale kekahi i ka lima. Hana ma hope pono no ka makahiki, a hiki nae i ka pono ma ka chap ua nui. ka ripple ua haʻahaʻa ma mua o ka mea a ka palapala mea pihana i. Kēia i loko o ka LC auaiaea Kānana ma ka 5V hoino aku, ma ka mua popped ia ka luna.

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