Taw qhia: Lub luag haujlwm tseem ceeb ntawm cov khoom siv lead ua
Cov txheej txheem txhuas yog "cov pob txha hlau" ntawm cov pob semiconductor - nws txhawb nqa thiab ruaj ntseg cov nti, txuas cov khoom siv hluav taws xob sab hauv mus rau cov xaim hluav taws xob sab nraud, thiab dissipates ntau tshaj 70% ntawm cov nti hluav taws xob. Raws li kev sib xyaw ua ke hloov mus rau qhov loj dua, muaj zog dua qhov ntom ntom, thiab cov pob nyias nyias, xaiv txoj cai txhuas txhuas hlau tau dhau los ua qhov kev txiav txim siab tseem ceeb uas cuam tshuam ncaj qha rau kev ua haujlwm ntawm cov chips, kev ntseeg siab, thiab tus nqi.
Copper-raws li alloys ua tus thawj coj cov khoom lag luam, suav txog ntau dua 90% ntawm tag nrho cov khoom siv lead ua. Phau ntawv qhia no muab kev sib piv ntawm tsib feem ntau siv lead ua tooj liab alloys -C19200, C19400, C70250, C18150, thiabC70350 - los pab cov kws tsim khoom ntim khoom, cov kws tshaj lij kev yuav khoom, thiab cov neeg tsim khoom siv hluav taws xob ua kom paub txog kev txiav txim siab xaiv cov khoom.
Peb tiam ntawm Lead Frame Copper Alloys
Cov evolution ntawm txhuas thav duab tooj liab alloys qhia txog kev lag luam semiconductor qhov kev xav tau ntau dua, muaj zog dua, thiab thermal stability zoo dua.
Thawj Tiam: Cu-Fe-P Alloys (C19200,C19400)
Cu-Fe-P alloys yog cov khoom siv lead ua ntau tshaj plaws, suav txog kwv yees li 80% ntawm tooj liab-raws li cov khoom siv lead ua. Cov alloys no ua tiav lawv cov khoom los ntawm cov khoom siv ntxiv dag zog ua ke nrog nag lossis daus ntawm Fe₂P, Fe₃P, thiab theem Fe theem.
C19200 muaj kwv yees li 0.1% hlau thiab 0.03% phosphorus. Nws muaj qhov tshwj xeeb tshaj plaws ntawm cov hluav taws xob hluav taws xob ntawm kwv yees li 90% IACS, tab sis nws lub zog yog qhov qis (hardness tsuas yog HV 120-140). Vim nws lub zog qis dua, C19200 feem ntau txwv rau cov khoom siv hluav taws xob sib cais.
C19400(feem ntau hu ua TAMAC194 los ntawm Mitsubishi Materials) muaj 2.1-2.6% hlau, 0.015-0.15% phosphorus, thiab 0.05-0.20% zinc. Los ntawm kev nce cov ntsiab lus hlau los ntawm 0.1% mus rau 2.3%, C19400 ua tiav lub zog siab dua (HV 140-150) tab sis ntawm tus nqi qis hluav taws xob conductivity (60-65% IACS). Txij li thaum nws txoj kev loj hlob los ntawm Olin Corporation nyob rau xyoo 1970, C19400 tseem yog cov khoom siv lead ua ntau tshaj plaws nyob rau hauv kev ua lag luam. Nws yog dav siv nyob rau hauv ob qho tib si discrete pab kiag li lawm thiab general-purpose IC lead thav duab.
Thib Ob Tiam: Cu-Ni-Si Alloys (C70250, C70350)
Cu-Ni-Si alloys sawv cev rau tiam thib ob ntawm cov khoom siv lead ua, tsim kom tau raws li qhov yuav tsum tau muaj zog dua ntawm kev sib xyaw ua ke. Cov alloys ua tiav lawv cov khoom los ntawm nag lossis daus hardening ntawm Ni₂Si theem dispersion thaum lub sij hawm kev laus.
C70250 (tseem hu ua C7025 lossis CuNi3SiMg) feem ntau muaj 2.2-4.2% npib tsib xee, 0.25-1.2% silicon, thiab 0.05-0.30% magnesium. Nws muaj qhov sib npaug zoo ntawm lub zog (lub zog tensile 650-860 MPa) thiab hluav taws xob conductivity (40-50% IACS). C7025 yog cov khoom siv zoo tshaj plaws rau cov nplais loj thiab loj heev IC txhuas thav ntawv. Nws tau dhau los ua qhov kev xaiv tseem ceeb rau AI chips, high-density ICs, thiab cov ntawv thov uas yuav tsum tau ua kom zoo-pitch stamping (tsawg dua lossis sib npaug rau 0.2mm suab).
C70350 yog Cu-Ni-Co-Si alloy sawv cev rau "kev ua haujlwm qab nthab" ntawm cov khoom siv lead ua. Nws muaj lub zog siab tshaj plaws ntawm tag nrho cov txhuas txhuas alloys (780-980 MPa) thaum tuav 45-55% IACS conductivity. Nrog ultra-lub zog siab tshaj 850 MPa thiab conductivity siab dua 45% IACS, C70350 tau dhau los ua qhov kev tshawb fawb hotspot rau tiam tom ntej ntawm etched lead ncej strips. Nws yog qhov zoo tagnrho rau cov pob khoom ultra-nyias (tsawg dua lossis sib npaug li 0.1 hli), qhov xwm txheej kub ntxhov siab, thiab kev siv AI / aerospace.
Thib peb tiam: Cu-Cr-Zr Alloys (C18150)
Cu-Cr-Zr alloys sawv cev rau tiam thib peb ntawm cov khoom siv lead ua, muab kev sib xyaw zoo tshaj plaws ntawm ultra- siab conductivity thiab lub zog zoo.
C18150 (Cu-Cr-Zr) yog nag lossis daus- tooj liab tawv-chromium-zirconium alloy. Nws ua tiav hluav taws xob conductivity ntawm Ntau dua lossis sib npaug rau 80% IACS thaum xa lub zog tensile ntawm 540-640 MPa. C18150 muab lub zog piv rau lossis tshaj C7025 thaum tuav cov conductivity ntawm par nrog Cu-Fe-P alloys. Nws kuj muab kev hnav zoo heev, weldability, thiab txias / kub formability, ua rau nws muaj zog tus neeg sib tw rau yav tom ntej cov hlau lead daim ntaub ntawv, tshwj xeeb tshaj yog nyob rau hauv siab -tam sim no, siab -thermal-stress scenarios xws li AI kev cob qhia chips thiab fais fab modules.
Comprehensive Performance Comparison Table
| Alloy | Qhov system | Conductivity (% IACS) | Tensile zog (MPa) | Hardness (HV) | Softening Temp. | Lub zog tseem ceeb | Cov ntawv thov tseem ceeb |
|---|---|---|---|---|---|---|---|
| C19200 | Cu-Fe-P | Ntau dua lossis sib npaug li 85 | 320-400 | 120-140 | ~ 470 degree | Ultra{0}}cov conductivity siab, tsis tshua muaj cua sov tsim | Cov khoom siv tsis sib xws, siab - zaus hloov pauv, lub zog tswj chips |
| C19400 | Cu-Fe-P | ~60 | 415-485 | 130-150 | ~ 470 degree | Tus nqi zoo tshaj -kev ua tau zoo, ntim siab | General -Lub hom phiaj ICs, nco chips (DRAM), cov khoom siv hluav taws xob |
| C70250 | Cu-Ni-Si | 40-50 | 650-860 | 180-240 | >500 degree | Lub zog-kev sib npaug, kev ntxhov siab | AI chips, loj- nplai ICs, smartphone processors, 5G li |
| C18150 | Cu-Cr-Zr | Ntau dua lossis sib npaug li 80 | 540-640 | 110-145 | Ntau dua lossis sib npaug li 550 degree | High conductivity + zoo zog, hnav tsis kam | Siab - daim ntawv thov tam sim no, AI kev cob qhia chips, IGBT lub zog modules |
| C70350 | Cu-Ni-Co-Si | 45-55 | 780-980 | 200-250 | >500 degree | Lub zog siab tshaj, tiv thaiv -warpage | Ultra- tej pob khoom nyias, thermal stress, aerospace |
Peb Lub Ntsiab Tseem Ceeb rau Kev Xaiv Lead-Frame Copper Alloy
Tsis muaj alloy zoo meej, tsuas yog haum alloyStrength vs conductivity yog classic engineering compromise. Kev xaiv zaum kawg yuav raug txiav txim siab los ntawm kev siv lub zog nti, ntim cov thickness thiab lub sijhawm ua haujlwm kub.
Lub zog tensile tsis yog qhov ntsuas ntsuas nkaus xwbKev ntxhov siab-kev ua haujlwm tsis zoo thiab kub-kub softening kuj ncaj qha txiav txim siab txog kev cia siab rau lub sijhawm ntev.C70250thiabC70350qhia pom tseeb qhov zoo dua Cu-Fe-P series ntawm kev ntxhov siab-so kev ua haujlwm.
Xav txog kev tsim khoom & cov khoom lag luam kev muaj tiagDhau li ntawm cov kev qhia, koj yuav tsum tau soj ntsuam stamping / etching manufacturability, domestic localization muaj, batch sib xws thiab tag nrho cov nqi yuav khoom, tsis tsuas yog raw cov ntaub ntawv tus nqi.
Cov ntsiab lus tseem ceeb piav qhia
IACS (International Annealed Copper Standard)- Tus qauv ntsuas rau hluav taws xob conductivity, nrog annealed ntshiab tooj liab txhais tau tias 100% IACS.
Tensile zog- Qhov siab tshaj plaws ntawm cov khoom siv tuaj yeem tiv taus ua ntej tawg (MPa). High-kawg AI chips feem ntau xav tau ntau dua lossis sib npaug li 800 MPa, thaum qis - rau - cov chips nruab nrab muaj peev xwm ua haujlwm nrog 400-600 MPa.
Kev nyuaj siab Relaxation Resistance- Muaj peev xwm tswj tau elastic quab yuam nyob rau hauv qhov kub thiab txias.C70250thiabC70350 ua tau zoo tshaj C19400 nyob rau hauv no hais txog, ua rau lawv txhim khu kev qha rau ntev -lub sij hawm tiv tauj siab nyob rau hauv connectors thiab terminals.
Softening Kub- Qhov kub ntawm cov khoom pib poob nws lub zog vim yog cov teebmeem annealing. C18150 muaj qhov siab tshaj plaws softening kub (Ntau tshaj los yog sib npaug rau 550 degree), ua rau nws zoo tagnrho rau siab - kub soldering thiab reflow txheej txheem.
Ntoo txiav txim siab ceev
Lub zog> 500W?
Yog → Muab qhov tseem ceeb siab -kub softening kuj →C70250 / C70350
Tsis yog → Mus rau kauj ruam 2
Pob thickness <0.1mm?
Yog → Prioritize anti-warpage →C70350 / C70250
Tsis yog → Mus rau kauj ruam 3
Lub teeb liab zaus> 10GHz LOSSIS tsim hluav taws kub hnyav?
Yog → Prioritize siab conductivity →C19200 / C18150
Tsis muaj →C19400(tus nqi zoo tshaj -kev ua tau zoo)
Tswv yim xaiv Framework los ntawm Chip-level Parameters
Match alloy qib ncaj qha los ntawm koj lub zog nti dissipation, pob thickness thiab teeb liab zaus
| Chip-level Feature | Pom zoo Alloy | Yog vim li cas |
|---|---|---|
| Lub zog tsawg dua lossis sib npaug ntawm 200 W, pob tuab Ntau dua lossis sib npaug li 0.12 hli, qib neeg siv khoom | C19400 | Zoo tus nqi-kev ua tau zoo, txaus txhua yam muaj zog rau kev tsim khoom loj |
| Lub hwj chim nyob ib ncig ntawm 500 W, cov pa ntim | C70250 | Balanced zog thiab conductivity, zoo anti-so khoom |
| Fais fab ncig 1000 W, siab xav tau cua sov dissipation | C18150 | Ntau dua los yog sib npaug rau 80% IACS conductivity, zoo heev los tiv thaiv-siab kub softening |
| Power >800 W + ultra-thin pob Tsawg dua lossis sib npaug li 0.1 hli | C70350 | Lub zog siab tshaj plaws, muaj peev xwm tiv thaiv kev ua tsov rog zoo heev |
| High-frequency switching, high-tam sim no, kub-sensitive ntaus ntawv | C19200 | Ntau dua los yog sib npaug rau 85% IACS, tsawg thermal tiam |
Kev lag luam Trend rau Next-generation Lead-Frame Materials
Tsav los ntawm peb lub tswv yim: nce nti zog noj (1000 W +), ntau dua teeb liab zaus (448G), thiab ultra-thin ntim (tsawg dua los yog sib npaug rau 0.03 hli), txhuas-thav duab tooj liab alloy evolves raws path:C19400 (qib tus nqi siv tau zoo)→ C70250 (qib siab-siab zog) → C18150 (qib siab conductivity) / C70350 (qib ultra-high-strength).
Cov kev cai tshiab tsom rau UCIe 3.0, 448G tooj liab cable daim ntawv thov, 0.03 hli ultra-nyias strip thiab ntau dua-kev ua tau zoo nag lossis daus-tsim tooj liab alloys. Tuam Tshoj cov tuam txhab tsim khoom lag luam tau ua kom tsis tu ncua ntawm C19400, C70250, C18150 thiab C70350 los hloov cov ntaub ntawv txawv teb chaws rau cov chaw ntim khoom semiconductor.
Cov ntsiab lus
| Alloy | Zoo tshaj rau | Kev txwv tseem ceeb |
|---|---|---|
| C19200 | High- zaus, siab-tam sim no, tshav kub-sensitive applications | Tsawg zog |
| C19400 | Tus nqi -sensitive, dav dav- lub hom phiaj ICs thiab nco chips | Tsawg zog rau cov nodes siab heev |
| C70250 | AI chips, siab -qhov ceev ICs, nplua -pitch pob | Tsawg conductivity tshaj Cu-Fe-P alloys |
| C18150 | Siab-tam sim no, siab-thermal- kev nyuaj siab, fais fab modules | Cov khoom siv tsawg, tus nqi siab dua |
| C70350 | Ultra- tej pob khoom nyias, kev ua tau zoo heev | Tus nqi siab tshaj, muaj tsawg |
Cov kab hauv qab:Xaiv cov hlau uas zoo tshaj plaws rau koj lub nti lub zog noj, pob tuab, ua haujlwm kub, thiab cov hom phiaj nqi. Thaum tsis ntseeg, pib nrog tsob ntoo txiav txim siab saum toj no - thiab sab laj nrog peb pab neeg ua haujlwm kom paub meej txog kev txhawb nqa.
FAQ
Q1: Vim li cas peb tsis tuaj yeem siv cov tooj liab ntshiab rau cov hlau lead?
A: Ntshiab tooj liab muab cov conductivity siab heev tab sis tsis tshua muaj zog tensile. Nws yog ib qho yooj yim rau deform thaum lub sij hawm high-speed stamping thiab thermal cycling. Copper alloys ntxiv cov ntsiab lus alloying kom paub lub zog-conductivity tshuav nyiaj li cas rau kev ntim khoom.
Q2: Dab tsi yog qhov kev ntxhov siab-txo qis thiab vim li cas nws tseem ceeb?
A: Kev ntxhov siab-txias piav qhia txog cov khoom muaj peev xwm ua kom muaj kev ntxhov siab rau cov neeg kho tshuab nyob rau hauv lub sij hawm ntev ua haujlwm kub. Kev ntxhov siab-so tsis zoo yuav ua rau cov hlau lead-thooj tsis ua haujlwm. C70250 / C70350 outperform C19400 significantly ntawm qhov taw qhia no.
q3: uaC19400 hloov C18150?
A: Nyob rau hauv ib txwm-kub tus neeg siv-qib scenarios yam tsis muaj kev kub ntxhov siab, C19400 tuaj yeem hloov C18150 kom txo tus nqi khoom. Rau kev ua haujlwm tsis tu ncua kub siab tshaj 200 degree, C18150 (Cu-Cr-Zr) tseem nyiam.
Q4: Dab tsi yog qhov txawv ntawm C19200 thiabC19400?
A: Ob leeg yog Cu-Fe-P series. C19200 muaj ntau dua conductivity (Ntau dua lossis sib npaug li 85% IACS) tab sis qis zog, tsom rau cov khoom siv hluav taws xob tam sim no. C19400 ua lag luam ib nrab conductivity rau cov neeg kho tshuab zog siab dua rau cov hom phiaj IC txhuas-thav duab.
Q5: Cov tooj liab twg yog qhov zoo tshaj plaws rau cov neeg siv khoom-qib qis-zog txhuas thav duab?
A: C19400 (Cu‑Fe-P) yog qhov kev xaiv zoo tshaj plaws. Nws muaj lub zog sib npaug, kev ua haujlwm zoo stamping thiab kev ua tau zoo ntawm tus nqi rau cov neeg siv khoom IC thiab cov khoom siv sib cais ntawm cov hlau lead-thav duab hauv qab Tsawg dua lossis sib npaug ntawm 200 W nti zog.
Q6: Dab tsi alloy kuv yuav tsum xaiv rau high-power AI nti txhuas thav ntawv?
A: Rau nruab nrab-siab zog AI chips (~ 500 W), xaiv C70250. Rau lub zog siab dua 800 W nrog cov ntim ultra-nyias, C70350 tau pom zoo rau nws lub zog ultra-siab thiab ua haujlwm tiv thaiv kev ua tsov rog.
Q7: Dab tsi yog qhov txawv nruab nrab ntawm C19400 thiab C70250?
A: C19400 muaj cov khoom siv hluav taws xob ntau dua thiab tus nqi qis dua rau cov neeg siv khoom loj. C70250 muab lub zog tensile ntau dua thiab zoo dua kev ntxhov siab-txo kev ua haujlwm rau kev ntseeg siab, siab zog semiconductor ntim.
Q8: C18150 vs C19400: Thaum twg kuv yuav tsum xaiv C18150?
A: Xaiv C18150 (Cu‑Cr‑Zr) yog tias koj xav tau ntau dua lossis sib npaug li 80% IACS kev ua haujlwm siab thiab zoo heev kub-kub softening kuj rau high-tam sim no inference chips. C19400 ua haujlwm rau cov xwm txheej kub ib txwm kom txuag tau nqi.
Q9: Thaum twg siv C19200 txhuas-thav duab tooj liab alloy?
A: C19200 haum rau high-frequency switching thiab high-tam sim no hwj chim tswj chips. Nws qhov loj dua los yog sib npaug rau 85% IACS cov khoom siv hluav taws xob siab pab txo qis kev tsim hluav taws xob, txawm tias nws lub zog siv hluav taws xob qis dua.
Q10: Puas yog ntim cov thickness cuam tshuam rau kev xaiv cov hlau lead-thooj hlau?
A: Yog. Ultra-nyias ntim (tsawg dua los yog sib npaug li 0.1 hli) yuav tsum muaj zog dua alloys xws li C70250 los yog C70350 los tiv thaiv cov hlau lead-thav duab warpage thaum lub sij hawm ntim txheej txheem.
Q11: Puas tuaj yeem ua cov khoom lag luam hauv Suav teb tuaj yeem hloov pauv cov khoom siv?
A: Yog. Cov tuam txhab hauv zos tau ua tiav cov khoom lag luam ruaj khov rau C19400 thiab C70250. C18150 thiab C70350 tab tom txhim kho los ntawm me me-batch sim-ntau lawm rau cov neeg siv khoom pov thawj.
Q12: Puas yog lub zog tensile tsuas yog qhov tseem ceeb rau kev xaiv cov khoom siv lead ua?
A: Tsis yog. Kev ntxhov siab-txo tsis kam, kub-kub softening tsis kam, conductivity, stamping yield thiab tag nrho cov nqi yuav khoom kuj cuam tshuam rau lub sij hawm ntev kev ntseeg siab ntawm cov cuab yeej thiab cov khoom loj.
