Lisosa tsa ho hloleha ha patch power inductor| U FOLE

Ke mabaka afe a amang ho hlōleha ha matla ea patch? Kajeno, ke hlophisitse litaba tse ling tsa bohlokoa bakeng sa litšupiso tsa hau.

Lisosa tsa ho hloleha ho inductor

1. Khatello ea lik'hemik'hale e hlahisoang ke motsoako oa makenete ts'ebetsong ea machining e kholo ebile ha e e-s'o lokolloe.

2. Ho na le litšila mokokotlong oa khoheli kapa ntho e sa bonahaleng ea mantlha ea khoheli ka boeona ha e tšoane, e amang boemo ba matla a khoheli a mantlha mme e khelosa ho kenella ha matla a khoheli.

3. Ka lebaka la petso ea sintering ka mor'a ho sintering.

4. Ha mohala oa koporo o kopantsoe le lesela la koporo ka ho qoelisoa ka ho qoelisoa, coil e fafatsoa ka thini ea metsi, e qhibilihisang terata ea enamelled le ho baka potoloho e khutšoanyane.

5. Mohala oa koporo o mosesaane, e leng se etsang hore ho be le tjheseletso ea bohata le ho hloleha ha potoloho e bulehileng ha e kopantsoe le lesela la koporo.

Mokhoa oa ho cheselletsa

The inductance ea low frequency patch power inductor e eketseha ka tlase ho 20% ka mor'a hore reflow soldering.

Demagnetization e etsahala hobane mocheso oa "reflow soldering" o feta mocheso oa Curie oa lisebelisoa tse tlase tsa patch inductor. Kamora demagnetization ea patch inductor, permeability ea thepa ea patch inductor e khutlela holimo mme inductance ea eketseha. Lethathamo le akaretsang la taolo ke hore inductance e eketseha ka tlase ho 20% kamora hore patch inductor e hanane le mocheso oa welding.

Bothata boo ho hanyetsa ha solder ho ka bakang ke hore ka linako tse ling ts'ebetso ea potoloho kaofela e tšoaneleha ka li-welding tse nyenyane tsa batch (ha patch inductor e sa futhumale ka kakaretso, inductance e eketseha hanyenyane). Leha ho le joalo, ha ho na le palo e kholo ea li-chips, ho fumanoa hore ts'ebetso ea lipotoloho tse ling e senyeha. Sena se ka 'na sa bakoa ke keketseho ea inductance ea patch ka mor'a hore reflow soldering, e amang ts'ebetso ea potoloho. Libakeng tseo ho nepahala ha chip inductance ho hlokahalang ka thata (tse kang ho amohela le ho fetisa potoloho), ho lokela ho lebisoa tlhokomelo e eketsehileng ho hanyetsa ho tjheseletsa ha chip inductor.

Ha mocheso oa "reflow soldering" o fihla, silevera ea tšepe e kopana le thini ea tšepe ho etsa eutectic, kahoo thini e ke ke ea kenngoa ka ho toba pheletsong ea silevera ea patch inductor. Ho e-na le hoo, qetello ea silevera e qala ka ho kenngoa ka nickel ho etsa lesela le sireletsang, ebe le kenngoa ka tini.

1. Qetella oxidation:

Ha patch e angoa ke motlakase ke mocheso o phahameng, mongobo, lik'hemik'hale, likhase tsa oxidizing, kapa li bolokiloe nako e telele haholo, tšepe ea Sn e qetellong ea inductor ea patch e na le oxidized ho SnO2, 'me qetellong ea inductor ea patch e ba lefifi. Hobane SnO2 ha e thehe eutectic le Sn, Ag, Cu, joalo-joalo, solderability ea patch inductance ea fokotseha. Shelf bophelo ba lihlahisoa tsa patch inductor: halofo ea selemo. Haeba pheletso ea inductance ea patch e silafalitsoe, joalo ka lintho tse mafura, li-solvents, joalo-joalo, e tla baka ho fokotseha ha solderability.

2. Koko ea nickel e tšesaane haholo:

Haeba nickel plating, lesela la nickel le tšesaane haholo hore le ka bapala karolo ea ho itšehla thajana. Nakong ea reflow soldering, Sn e pheletsong ea inductor ea patch e sebetsa ka Ag ea eona pele, e amang ho qhibiliha ha Sn qetellong ea patch le pente ea solder holim'a patch, e bakang ketsahalo ea ho ja. silevera le ho fokotseha ha solderability ea patch inductor.

Mokhoa oa ho ahlola: qoelisa patch inductor ka har'a sekontiri se entsoeng ka ho qhibilihisoa ka metsotsoana e seng mekae ebe u e ntša. Haeba likoti li fumanoa qetellong, kapa esita le 'mele oa porcelain o pepesitsoe, ho ka ahloloa hore ho na le ketsahalo ea ho ja silevera.

3. Welding e fosahetseng:

Haeba sehlahisoa sa patch inductor se na le deformation e kobehang, ho tla ba le phello ea ho holisa nakong ea welding. Li-welding tse fosahetseng, li-welding tsa bohata, moralo o sa lokelang.

a. Lipheletso tse peli tsa pad li lokela ho etsoa ho qoba boholo bo fapaneng, ho seng joalo nako ea ho qhibiliha le matla a ho kolobisa lipheletsong tse peli li tla fapana.

b. Bolelele ba tjheseletsa bo ka holimo ho 0.3mm (ke hore, bolelele ba tsietsi ea pheletso ea tšepe ea patch inductor le pad).

c. Bolelele ba pad bo nyane kamoo ho ka khonehang, ka kakaretso ha bo fete 0.5mm.

d. Bophara ba pad ka boeona ha boa lokela ho ba bophara haholo, 'me bophara ba eona bo lekaneng ha boa lokela ho feta 0.25mm ha bo bapisoa le bophara ba MLCI.

Ha patch inductance e fetola angle θ ka lebaka la sekontiri se sa leka-lekaneng kapa ho thella ha solder paste. Ka lebaka la matla a ho kolobisa a hlahisoang nakong ea ho qhibiliha ha lesela la welding, maemo a ka holimo a mararo a ka 'na a thehoa, ao ho itokisa ho leng matla, empa ka linako tse ling ho hula ho na le ho feta, kapa ntlha e le' ngoe e huloa, 'me patch inductor ho huleloa holim'a lesela, kapa esita le ho hula. Oblique kapa e otlolohile (ntho ea sefika). Hajoale, mochini o behang o nang le θ angle offset pono ea pono o ka fokotsa ho hlaha ha mofuta ona oa ho hloleha.

Haeba tekanyo ea hona joale ea lifaha tsa "chip inductor" tse khethiloeng e le nyenyane, kapa haeba ho e-na le motlakase o moholo oa potoloho potolohong, hona joale ho tla chesa 'me chip inductor kapa lifaha tsa magnetic li tla hlōleha, ho fella ka potoloho e bulehileng. Tlosa patch inductor ho tloha boto ea potoloho bakeng sa tlhahlobo, patch inductor e hlōleha, 'me ka linako tse ling ho na le matšoao a ho khathala. Haeba ho felloa ke matla hona joale ho etsahala, palo ea lihlahisoa tse hlōlehileng e tla ba ngata, 'me lihlahisoa tse hlōlehileng ka har'a sehlopha se le seng li tla fihla ho feta 100%.

Ho pholile ka potlako le ho futhumatsa nakong ea reflow soldering ho baka khatello ea kelello ea ka hare ea patch inductor, e lebisang ho atolosoeng ha mefokolo ea karolo e nyenyane haholo ea patch inductor e nang le kotsi e patehileng ea potoloho e bulehileng, e fellang ka potoloho e bulehileng ea patch inductor. Tlosa patch inductor ho tloha boto ea potoloho ho hlahloba, patch inductor ha e sebetse. Haeba ho na le tjheseletsa e bulehileng, palo ya dihlahiswa tse hlolehileng hangata e nyane, mme dihlahiswa tse hlolehileng sehlopheng se le seng hangata di ka tlase ho 1000.

Matla a makenete

'Mele oa ceramic ha o matla ka ho lekaneng ebile o brittle ka lebaka la ho sintering hampe ha patch inductor kapa mabaka a mang, kapa' mele oa porcelain o senyeha ha sehlahisoa se angoa ke matla a ka ntle.

Matla a ho khomarela

Haeba sekhomaretsi sa lesela la silevera la pheletso ea patch e futsanehile, ha reflow soldering, inductor ea patch e bata ebile e chesa, khatello ea maikutlo e bakoang ke ho atoloha ha mocheso le ho fokotseha ha serame, 'me' mele oa porcelain o ameha ke matla a ka ntle. , hoa khoneha ho baka ho arohana le ho tšolloa ha qetello ea inductor le 'mele oa porcelain; kapa pad e kholo haholo, 'me ha reflow soldering, matla a ho kolobisa a bakoang ke ho qhibiliha ha pente le ho qetela ho arabela ho feta ho khomarela qetellong, ho fella ka tšenyo ea ho qetela.

Patch inductor e chesa ho feta tekano kapa e chesa e le tala, kapa ho na le mapetso a manyane ts'ebetsong ea tlhahiso. Ho pholile ka potlako le ho futhumatsa nakong ea reflow soldering ho baka khatello ka hare ho patch inductor, crystal crack, kapa micro-crack atolosoe, e bakang tšenyo ea makenete joalo-joalo.