Thick Film vs Thin Film Resistors: Liphapang & Likopo tsa PCB

Selelekela

Ho khetha pakeng tsa lifilimi tse teteaneng le lihanyetsi tse tšesaane tsa lifilimi ho emela e 'ngoe ea likhetho tsa bohlokoa ka ho fetisisa moralong oa PCB, e amang ka kotloloho ho nepahala ha potoloho, botsitso ba mocheso le litšenyehelo tsa tlhahiso. Baenjiniere ba bangata ba shebana feela le boleng ba khanyetso le boholo ba sephutheloana ha ba ntse ba shebile liphapang tsa mantlha tsa tlhahiso tse khethollang ts'ebetso ea nako e telele.

Lihanyetsi tse teteaneng tsa lifilimi li sebelisa li-conductive pastes tse hatisitsoeng ka skrineng, ha li-resistance tse tšesaane li sebelisa likarolo tsa tšepe tse kentsoeng ka vacuum. Phapang ena ea tlhahiso e baka likheo tse kholo tsa ho mamellana, mocheso o lekanang, le litšobotsi tsa lerata tse thibelang ho pheta-pheta ha moralo o theko e boima le ho se atlehe ha likaroloana.

Li-Resistors tsa Thick Film ke life?

Process difeme

Lihanyetsi tse teteaneng tsa lifilimi li sebelisa theknoloji ea khatiso ea skrineng ho beha pente ea conductive holim'a li-ceramic substrates, tse lateloang ke ho thunya ho matla ho 850 ° C. Setlolo se hanyetsanang se na le frit ea khalase, li-oxide tsa tšepe, le li-binders tsa organic tse etsang filimi e ka bang 10-25 micrometers ka mor'a ho sintering. Ts'ebetso ena e lumella tlhahiso e phahameng haholo e nang le matsete a fokolang a lisebelisoa ha a bapisoa le mefuta e meng ea lifilimi tse tšesaane.

Litšobotsi tsa Tshebetso

Li-resistor tse teteaneng tsa filimi tse tloaelehileng li fihlella mamello ea ±1% ho isa ho ±5% ka li-coefficient tsa mocheso tse tlohang ho ±100 ho isa ho ±200 ppm/°C. Sebopeho sa peista ea granular se hlahisa lerata le phahameng la Johnson ha le bapisoa le mefuta e menyenyane ea filimi. Boleng ba khanyetso bo tloha ho milliohms ho isa ho mashome a megohms, ka litekanyetso tsa matla li fihlang ho li-watts tse 'maloa ka har'a liphutheloana tse kholo.

Litšenyehelo le Boemo ba Kopo

Monyetla o ka sehloohong oa theknoloji ea lifilimi tse teteaneng o ho moruo oa tlhahiso. Ho hatisa skrineng ho hloka mehato e fokolang ea ts'ebetso ho feta ho kenya vacuum, ho fokotsa litšenyehelo tsa tlhahiso ka 60-80%. Leha ho le joalo, lera le letenya la peista le baka kabo ea hajoale e sa ts'oanang, e bakang lihlopha tse kholo tsa mamello le ho hoholeha ha mocheso ho fokotsang tšebeliso ea lipotoloho tse nepahetseng tsa tekanyo.

Li-Resistors tsa Thin Film ke life?

Process difeme

Tlhahiso ea resistor e tšesaane ea filimi e kenyelletsa ho qhala kapa ho fetola nichrome kapa tantalum nitride hore e be mouoane holim'a li-substrate tsa ceramic ka likamoreng tsa vacuum, ho etsa lifilimi tse botenya ba 0.01-0.1 micrometers. Ho kuta ka laser ho fetola boleng ba khanyetso ho latela litlhaloso tse nepahetseng ka ho tlosa thepa ka mekhoa e laoloang. Ts'ebetso ena ea ho tlosa e nolofalletsa ho nepahala ho ikhethang empa e hloka lisebelisoa tse khethehileng.

Litšobotsi tsa Tshebetso

Lihanyetsi tse tšesaane tsa lifilimi li fana ka mamello e tiileng joalo ka ± 0.01% ka li-coefficients tsa mocheso lipakeng tsa ± 5 le ± 50 ppm/°C. Lera le ts'oanang la tšepe le bonts'a lerata le fokolang le karabelo e ntle haholo ea maqhubu a phahameng ka lebaka la litlamorao tse tlase tsa parasitic. Maemo a ho hanyetsa a fumanehang hangata a tloha ho ohms ho ea ho megohms, leha ho ts'oaroa ha motlakase ho ntse ho lekanyelitsoe ha ho bapisoa le lifilimi tse teteaneng.

Nepahetse Melemo

Ho lumellana ha tekanyo ea athomo ea lifilimi tse kentsoeng ka vacuum ho hlalosa botsitso bo phahameng ka ho fetisisa filiming e teteaneng vs papiso ea filimi e tšesaane. Leha ho na le litšenyehelo tse phahameng tsa yuniti, likarolo tse tšesaane tsa filimi li fokotsa litlhoko tsa ho lekanya le ho hloleha ho amanang le ho hoholeha mekhoeng ea ho lekanya. Moeli oa bohlokoa o kenyelletsa ho felloa ke matla, kaha lifilimi tse tšesaane li sitoa ho sebetsana le khatello ea mocheso eo likarolo tse teteaneng tsa peista li mamellang.

Thick Film vs Thin Film Resistors: Key Performance Papiso

Tafole e bontša hore na ke hobane'ng ha khetho ea resistor ea filimi e teteaneng khahlanong le filimi e tšesaane e itšetlehile ka litlhoko tsa ts'ebeliso ho fapana le theko feela. Ho tsitsa ha mocheso ho ba bohlokoa haholo lits'ebetsong tsa likoloi le tsa indasteri moo maemo a tikoloho a fapanang ka 100°C kapa ho feta.

Liphello tsa Moralo oa PCB bakeng sa Thick Film vs Thin Film Resistors

Litsela tse nepahetseng tsa lipontšo

Lihanyetsi tsa lifilimi tse tšesaane li ipaka li le bohlokoa bakeng sa li-circuits tsa litšupiso tsa ADC, mekhahlelo ea tlhahiso ea DAC, le tlhophiso ea borokho ea Wheatstone moo ho nepahala ho amang ho nepahala ha tekanyo ka kotloloho. Lisebelisoa tsa bongaka le lisebelisoa tsa laboratori li itšetlehile feela ka theknoloji e tšesaane ea lifilimi hobane mamello ea ± 0.1% e boloka ho nepahala ha tekanyo ea hore mefuta e meng ea lifilimi e teteaneng e ke ke ea tšoana le ho fapana ha mocheso.

Lits'ebetso tse Senyang Mocheso

Litekanyetso tse tlase tsa TCR li thibela ho hoholeha ha khanyetso lipakeng tsa mocheso o sebetsang. Mohanyetsi oa filimi o mosesaane o nang le ± 25 ppm/°C o fetola feela 0.0025% ka tekanyo ea Celsius, ha filimi e teteaneng e ± 200 ppm/°C e fetoha 0.02% ka tekanyo. Libakeng tse tlas'a likoloi tse nang le ts'ebetso ea 125 ° C, phapang ena e fetolela ho bokella liphoso tsa 2.5% ho li-circuits tsa sensor conditioning.

Litlhoko tsa ho felloa ke matla

Lihanyetsi tse teteaneng tsa lifilimi li sebetsana le meroalo e phahameng ea matla ka har'a liphutheloana tse kopaneng, li etsa hore li tšoanele lits'ebetso tsena:

• Moeli oa hona joale oa mokhanni oa LED - Lera le thata la peista le mamella ts'ebetso e tsoelang pele ea mocheso o phahameng ntle le ho senyeha.
• Marang-rang a phepelo ea motlakase - Ts'ebetsong e bolokang litšenyehelo moo mamello ea ± 5% e finyellang litlhoko tsa taolo.
• Digital hula-up resistors - Ho nepahala ho lekaneng bakeng sa tlhaloso ea boemo ba logic ka tšebeliso e fokolang ea sebaka sa PCB.
• Bakhanni ba liheke tsa taolo ea makoloi - Ho tsitsisa ha mocheso tlas'a ho fetola li-transients tse nang le matla a phahameng a ho otla ha matla.

High-Frequency le RF Circuits

Kaho ea ho hanyetsa filimi e tšesaane e fokotsa ho kenella ha likokoana-hloko le bokhoni, ho boloka botšepehi ba matšoao ka holimo ho 100 MHz. Filimi ea tšepe e ts'oanang e boloka ts'ebetso e tsitsitseng, ha sebopeho se teteaneng sa granular se theha lintlha tse bonahatsang maqhubu a RF. Li-network tsa filthara, li-circuits tse bapisang li-impedans, le li-module tsa 5G li hloka likarolo tse tšesaane tsa filimi bakeng sa li-parameter tsa S le litšobotsi tsa ho lieha ha sehlopha.

Tlhahlobo ea Litšenyehelo le Tšepahala

Litšenyehelo tsa Karolo ea Pele

Bahanyetsi ba lifilimi tse teteaneng ba fokotsa litšenyehelo tsa BOM ka 70-85% ha li bapisoa le tse lekanang le lifilimi tse tšesaane, ho etsa chelete e ngata ea ho boloka lihlahisoa tse ngata tsa bareki. Sesebelisoa se tloaelehileng sa 0603 se thibelang lifilimi se bitsa $ 0.002-0.005, ha mefuta e fapaneng ea lifilimi e tšesaane e tloha ho $ 0.015-0.030. Leha ho le joalo, kabo e pharalletseng ea mamello e eketsa nako ea ho lekanya nakong ea tlhahlobo ea tlhahiso.

Litsenyehelo tsohle tsa ho ba le beng

Tlhahlobo ea nako e telele ea botsitso e bonts'a lihanyetsi tse tšesaane tsa lifilimi li boloka lintlha tsa lilemo tse 20+ tlas'a maemo a lekantsoeng, ha ts'ebetso ea filimi e teteaneng e theoha ka mokhoa o lekanyelitsoeng ka mor'a lilemo tse 10 libakeng tse thata. Likarolo tsa filimi tse tšesaane hangata li fana ka litšenyehelo tse felletseng tsa ho ba beng ba lisebelisoa tse nepahetseng ka ho tlosa mehato ea ho lekanya le ho fokotsa ho hloleha ho tloha ho hoholeha. Theko ea ho hanyetsa e emela ka tlase ho 0.5% ea litšenyehelo tse ngata tsa kopano ea PCB.

Mehlala ea Kopo

Likopo tsa lifilimi tse teteaneng

Lisebelisoa tsa elektroniki tsa bareki li phahamisa lihanyetsi tse matla tsa lifilimi taolong ea matla, li-pull-ups tsa digital logic, le boemo ba matšoao a kakaretso moo mamello ea ± 5% e lekaneng:

• Li-charger tsa li-smartphone le li-adapter tsa motlakase - Maikutlo a matla a theko e phahameng le li-circuits tsa hona joale tsa ho utloa.
• IoT sensor nodes - Boemo ba analog bo seng bo bohlokoa bo nang le mamello e atolositsoeng ea coefficient ea motlakase.
• lisebelisoa Home - Likopo tse akaretsang tse behang ts'epehi pele ho feta ho nepahala.
• Elektronike 'mele oa likoloi - Lits'oants'o tse bonolo le tse bonolo tse nang le litlhoko tsa ho nepahala tse itekanetseng.

Likopo tse Thin Film

Lisebelisoa tsa bongaka li hloka lihanyetsi tse tšesaane tsa lifilimi bakeng sa ho lekola ho nepahala ha mokuli le ho nepahala ha tlhahlobo. Sistimi ea sepakapaka e totobatsa likarolo tse tšesaane tsa filimi ho boloka tekano ka mocheso o feteletseng ho tloha ho -55°C ho ea ho +125°C le ho sisinyeha ho fihla ho 20g. Lisebelisoa tsa liteko le litekanyo, mehloli e nepahetseng ea hona joale, le li-module tsa RF li itšetlehile ka botsitso ba filimi e tšesaane bakeng sa litekanyo tse ka lateloang le ho latela melao.

Tataiso ea Khetho ea Boenjiniere bakeng sa Thick Film vs Thin Film Resistors

Nako ea ho Khetha Thin Film Resistors

• Lipotoloho tse itšetlehileng ka ho nepahala - Sebelisa filimi e tšesaane ha ho nepahala ha potoloho ho ama ts'ebetso ea sehlahisoa ka kotloloho, botsitso ba calibration, kapa ho latela ts'ireletso.
• Meetso e baballang mocheso - TCR e tlase e thibela ho hoholeha ha nako ea selemo kapa ea ts'ebetso e ka fetang litekanyetso tsa liphoso ha nako e ntse e ea.
• Lisebelisoa tse phahameng tsa maqhubu kapa tsa RF - Kaho ea filimi e tšesaane e fokotsa inductance / capacitance ea parasitic mme e thusa ho boloka ts'ebetso e laoloang ka hare ho ± 1 Ω.
• Lihlahisoa tsa nako e telele - Bakeng sa lisebelisoa tse shebaneng le lilemo tse 10+ tsa ts'epahalo ea tšimo, filimi e tšesaane e fokotsa haholo mefokolo e amanang le ho hoholeha le likotsi tsa waranti.

Nako ea ho Khetha Thick Film Resistors

• Lipotoloho tsa dijithale tsa sepheo se akaretsang - E loketse moo nako, ho beha mabaka le matšoao li sa hlokeng ho nepahala.
• Kabo ea matla le litsela tsa mojaro - Bahanyetsi ba lifilimi tse teteaneng ba kopana le litlhoko tsa ts'ebetso ha ± 5% mamello e amoheleha.
• Lihlahisoa tse phahameng tsa bareki - Khetho e theko e tlaase ha lipapiso tsa potoloho li netefatsa ts'ebetso e lekaneng ka stacking e mpe ka ho fetisisa ea mamello.
• Litsela tsa potoloho tse sa hlokahaleng - E loketse libaka tse nang le marang-rang a meralo e mengata le litlhoko tse tlase tse nepahetseng.

Mehato e Bohlokoa ea netefatso Pele ho Khetho ea ho Qetela

• Netefatsa TCR ea 'nete - Lekola ho hoholeha ha mocheso o felletseng oa ts'ebetso ho fapana le ho itšetleha ka lipehelo tsa lebitso.
• Sheba mamello khahlano le tekanyetso ea liphoso kaofela - Netefatsa hore stacking ea mamello ea cumulative e lumellana le litlhoko tsa sistimi.
• Lekola litšobotsi tsa lerata - E bohlokoa bakeng sa analog, sensor, le litselana tsa matšoao a tlase.
• Qoba liqeto tsa liphutheloana feela - Boitšoaro ba motlakase bo fapana haholo pakeng tsa filimi e teteaneng le e tšesaane esita le ka har'a sebaka se tšoanang (mohlala, 0402, 0603, 0805).

Papiso e nang le taeo ea li-parameter tsena e tiisa hore baqapi ba khetha theknoloji e ka tšeptjoang le e theko e tlaase ea resistor bakeng sa mosebetsi o mong le o mong oa potoloho.

fihlela qeto e

Tšusumetso ea Ts'ebetso ea Thick Film vs Thin Film Resistors

Khetho pakeng tsa filimi e teteaneng le theknoloji e tšesaane ea ho hanyetsa filimi e etsa qeto ka ho toba hore na ts'ebetso ea potoloho e lula e tsitsitse ho pholletsa le lotho ea tlhahiso, mocheso o sebetsang le tšebeliso ea nako e telele ea tšimo. Bahanyetsi ba lifilimi ba teteaneng ba fana ka ts'ebetso e lekaneng bakeng sa lits'ebetso tse akaretsang ka litšenyehelo tse fokolang, ha li-resistive tse tšesaane tsa lifilimi li fana ka ho nepahala le botsitso bo hlokahalang mekhoeng ea ho lekanya, ea bongaka le ea sefofane.

Liphapang tse ka sehloohong tsa tlhahiso li etsa hore ho be le monyetla o moholo oa ho mamella le TCR-hole ho feta seo matšeliso a boemo ba potoloho a ka se khonang.

Lintlha tsa Bohlokoa Baenjiniere ba Lokela ho Lekola

Baenjiniere ba lokela ho lekola likarolo tse tharo tsa bohlokoa ha ba khetha theknoloji ea ho hanyetsa:

• Ho nepahala ho hlokahalang ho pholletsa le mocheso
• Ho kheloha ho amohelehang nakong eohle ea bophelo ba sehlahisoa se lebeletsoeng
• Kakaretso ea litšenyehelo ho kenyeletsa ho lekanya, lihlahisoa, le kotsi ea ho hlōleha ha tšimo

Ho Qoba Likotsi Tse Tloaelehileng Tsa ho Khetha

Ho khetha lihanyetsi tse teteaneng tsa lifilimi bakeng sa lipotoloho tse nepahetseng ho eketsa litšenyehelo tse iphetang tsa ho lekanya le ho hlahisa likotsi tsa ts'epo ea nako e telele. Ka lehlakoreng le leng, ho hlalosa likarolo tse tšesaane tsa filimi lipotolohong moo mamello ea ± 5% e lekaneng e fella ka tšebeliso e sa hlokahaleng ntle le phaello e utloahalang ea ts'ebetso.

Ho Highleap Electronics, sehlopha sa rona sa boenjiniere se fana ka tataiso ea theknoloji ea resistor le tlhahlobo ea DFM ho ntlafatsa ts'ebetso le litšenyehelo tsa tlhahiso likopanong tsa hau tsa PCB.