Cov Lus Zais Cia ntawm Flex PCB Stack-Up: Ib Leeg mus rau 4-Txheej Qauv Decoded (PI/PET Guide)
Nkag siab txog txoj cai Flex PCB pawg yog qhov tseem ceeb rau kev sib npaug ntawm kev ua tau zoo, tus nqi, thiab kev ntseeg siab. Phau ntawv qhia no qhia txog yuav ua li cas xaiv qhov zoo tshaj plaws cov qauv txheej, cov khoom siv, thiab cov cai tsim qauv rau cov voj voog hloov pauv tau thoob plaws hauv kev lag luam suav nrog tsheb, kev kho mob, cov khoom siv hluav taws xob, thiab cov khoom siv hnav tau.
I. Ib Txheej Flex PCB: Kev Ua Haujlwm Uas Muaj Qhov Thickness-Driven
| Hom | Cov khoom siv hauv qab | Qhov tuab | Qhov Zoo Tshaj Plaws | Cov Ntaub Ntawv Siv Zoo Tshaj Plaws | Kev Pheej Hmoo Tsis Muaj |
|---|---|---|---|---|---|
| Tus Qauv Ib Leeg | PI | 25μm | Tus nqi qis tshaj plaws | Cov Xov Tooj Ntawm Tes, Cov Ntsiav Tshuaj | Kua muag hauv cov khoov dynamic |
| Tuab heev | PI | 50μm | >2X Kev Tiv Thaiv Kev Tsim Kua Muag | Cov Khoom Siv Txuas Lag Luam | N/A (Ua kom ruaj khov dua) |
| Pob tshab | Tus tsiaj | 36μm | >85% Kev Kis Lub Teeb | LED Strips, Cov Zaub | Kev puas tsuaj ntawm UV |
Cov Lus Qhia Txog Tus Kws Ua Haujlwm: PET 36μm raug nqi tsawg dua ~ 30% piv rau PI tab sis nws poob qis dua 105 ° C. Ib txwm xyuas cov lus qhia txog kev ua kom sov ua ntej xaiv.
II. Ob Txheej Flex PCB: Kev Sib Npaug ntawm Cov Xov Hlau & Kev Ruaj Khoov
| Hom | Txoj Cai Tsim Qauv Tseem Ceeb | Cov Lus Qhia Txog Tooj Liab |
|---|---|---|
| Txheem 2L | Coverlay xaiv tau rau cov ntawv thov static | ED Tooj Liab (Kev Ntsuas Tus Nqi) |
| Tuab heev 2L | Yuav tsum muaj kev npog rau kev tswj hwm impedance | RA Tooj Liab (≥100K flex) |
| Pob tshab 2L | Tsis txhob siv cov ntaub nplaum uas muaj cov tshuaj nplaum; siv cov nplaum pob tshab | Tooj Liab Uas Tau Muab Kauv Los Ntawm Cov Hlau |
Kev Kawm Txog Cov Ntaub NtawvIb lub cuab yeej hnav tau OEM txo qhov sib txawv ntawm impedance los ntawm 62% siv cov qauv PI 50μm + coverlay.
III. 4-Txheej thiab Ntau-Txheej Flex PCBs
1. Kev Txhawb Nqa Tooj Liab
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·Cov Txheej Sab Hauv: 1/3oz (18μm), 0.5oz (35μm), 1oz (70μm)
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·Cov Txheej Sab NraudIb yam li saum toj no, nrog rau kev xaiv ENIG lossis Immersion Tin tiav
2. Cov Qauv Lamination
| Hom pawg | Lub Cim ID | Coverlay siv tau? | Cov Qauv Siv Ib Txwm Muaj |
|---|---|---|---|
| Txheem 4L | – | Tsis yog | Cov qauv tsim uas tsis kim heev rau cov neeg siv khoom |
| Kev Ntseeg Siab 4L | R | Yog | Tsheb thiab kho mob-qib |
Tseem ceebRau 1oz tooj liab sab hauv, kev npog yog qhov yuav tsum tau ua kom tau raws li cov qauv IPC-2223. Yog tsis suav nrog nws feem ntau ua rau delamination.
3. Kev Cai Stack-Ups
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·Cov Kev Teeb tsa Txhawb Nqa: 6-txheej rigid-flex, PI/PET hybrid stacks
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·Yam Tsawg Kawg Nkaus Khoov Radius: 6 × tag nrho cov tuab ntawm lub rooj tsavxwm (piv txwv li, 0.3 hli rau 4L tsim)
IV. Kev Xaiv Khoom Siv: Cov Qauv Kev Ua Haujlwm ntawm Hom Lag Luam
| Khoom siv | Hom Lag Luam Zoo Tshaj Plaws | Qhov Zoo Tshaj Plaws | Tus nqi ib m² | Kev Txwv Kub |
|---|---|---|---|---|
| PI 25μm | DuPont Pyralux | Kev ntseeg tau zoo raws li tus qauv kub | $18 | 200°C |
| PI 50μm | Tamida | CTE tsis sib xws qis | $24 | 240°C |
| Tus tsiaj 36μm | Mitsubishi | UV tsis kam, txuag nqi | $11 | 105°C |
Cov txiaj ntsig ntawm kev xeemTaimide PI 50μm muaj sia nyob 200,000 lub voj voog flex, ntau dua li qhov nruab nrab ntawm kev lag luam ntawm 50,000 lub voj voog.
V. Tsis txhob ua yuam kev kim heev: Cov Cai Tsim Qauv Tseem Ceeb
1. Cov Ntawv Thov Kev Khoov Dynamic
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·Yuav tsum muajRA Tooj Liab + PI ≥25μm; tsis txhob muaj cov cheeb tsam tawv dhau ntawm cov cheeb tsam dynamic
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·Tsis txhobED Tooj Liab nyob rau hauv thaj chaw flex - yooj yim tawg hauv qab 5,000 lub voj voog
2. Cov Qauv Tsim Zaus Siab
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·Siv Rogers RO3000 series nrog FCCL uas tsis muaj nplaum
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·Tswj Kev kam rau siab ntawm Dk tsis pub dhau ±0.05 @10GHz rau kev ntseeg siab ntawm RF
3. Kev Ntseeg Tau ntawm Tsheb & Kev Kho Mob Qib Siab
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Siv tus lej "R" rau stack-up ID Ua raws li IPC Chav Kawm 3
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Xyuas kom meej CTE ntawm cov khaubncaws sab nraud povtseg kom tiv thaiv kev ua tsis tiav ntawm kev ntxhov siab thermal
Vim Li Cas Phau Ntawv Qhia No Thiaj Li Zoo Dua Cov Ntawv Qhia Txog Cov Ntaub Ntawv Dav Dav
Peb qhov kev tshuaj xyuas ntawm 172 pawg tsim khoom Flex PCB tsis ua tiav pom tias 68% ntawm cov teeb meem los ntawm:
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1. Siv cov txheej tooj liab sab hauv 1oz yam tsis muaj kev npog (delamination)
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2. Siv cov khoom siv PET hauv thaj chaw kub (kev puas tsuaj rov ua dua)
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3. Siv ED tooj liab hauv thaj chaw dynamic (kev ua tsis tiav thaum ntxov)
Ntawm Kev Xyiv Fab Nplua Nuj Tag Nrho, peb mus dhau cov qauv nrog:
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·Cov Ntaub Ntawv DNA ntawm Cov Khoom Siv: 50,000+ lub voj voog ntawm cov ntaub ntawv sim ntawm PI/PET kev sib xyaw ua ke
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·Kev Muab Khoom Siv AIKwv yees cov kev pheej hmoo ntawm lub sijhawm ua khoom rau Taiflex, DuPont, thiab lwm yam
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·Tus Neeg Tshuaj Xyuas Stack-Up: Qhia txog cov txheej tsis sib xws ua ntej siv cov cuab yeej lossis kev tsim khoom
Tshawb Nrhiav Ntau Ntxiv Txog Flex PCB Tsim & Tsim Khoom
- ·Kev Pabcuam Tsim Khoom thiab Sib Dhos Flex PCB - Kev piav qhia txog cov txheej txheem tsim khoom thiab cov peev xwm.
- ·Phau Ntawv Qhia Tsim PCB Flex - Cov kev coj ua zoo tshaj plaws rau kev teeb tsa, kev sib sau ua ke, thiab kev tswj hwm impedance.
- ·Tus nqi PCB Flex & Cov yam ntxwv ntawm kev hais nqe - Nkag siab txog cov yam ntxwv ntawm tus nqi thiab yuav ua li cas kom koj cov peev nyiaj zoo tshaj plaws.
- ·Kev Xaiv Khoom Siv PCB Flex - Kev nkag siab txog LCP, PI, cov hom nplaum, thiab cov ntawv ci tooj liab.
- ·Flex PCB vs Rigid-Flex: Yuav Xaiv Qhov Twg? - Kev sib piv txog kev siv tshuab thiab tus nqi rau kev txiav txim siab zoo dua.
🌐 Cov Kev Pabcuam thiab Cov Qauv Kev Lag Luam Uas Ntseeg Tau
- ·Cov Qauv IEEE rau Kev Tsim PCB Ceev - Siv rau kev ncaj ncees ntawm lub teeb liab thiab cov lus qhia impedance.
- ·IPC-6013 Tus Qauv rau Cov Voj Voog Uas Yooj Yim - Kev tsim nyog thiab kev lees txais cov qauv rau cov flex circuits.
- ·Kev Tshawb Fawb Txog Kev Lag Luam Prismark - Kev kwv yees thiab kev nkag siab txog kev lag luam hluav taws xob uas hloov pauv tau.
