Cov khoom
4 txheej pcb nrog kub ntiv tes hauv digital audio system
| Txheej | 4 txheej |
| Board thickness | 1.60MM IB |
| Khoom siv | Txa4 tg150 |
| Tooj thickness | 1 OZ (35 hli) |
| Nto tiav | ENIG Au Thickness 1um;Nws Thickness 3um |
| Min qhov (mm) | 0.203 hli |
| Min kab dav (mm) | 0.15 hli |
| Min Kab Qhov Chaw (mm) | 0.15 hli |
| Solder Mask | Ntsuab |
| Legend Xim | Dawb |
| Mechanical processing | V-scoring, CNC Milling (routing) |
| Ntim | Anti-static hnab |
| E-test | Flying probe los yog Fixture |
| Kev lees txais tus qauv | IPC-A-600H Chav Kawm 2 |
| Daim ntawv thov | Automotive electronics |
Khoom siv
Raws li ib tug neeg muag khoom ntawm ntau yam PCB technologies, ntim, txhuas lub sij hawm xaiv, peb muaj ib tug xaiv ntawm cov txheej txheem cov ntaub ntawv uas ib tug loj bandwidth ntawm ntau yam hom ntawm PCB yuav them thiab uas yeej ib txwm muaj nyob rau hauv tsev.
Cov kev xav tau rau lwm yam lossis rau cov ntaub ntawv tshwj xeeb kuj tuaj yeem ua tau raws li feem ntau, tab sis, nyob ntawm qhov xav tau tiag tiag, txog li 10 hnub ua haujlwm yuav xav tau kom tau txais cov khoom.
Hu rau peb thiab sib tham txog koj cov kev xav tau nrog ib qho ntawm peb pab neeg muag khoom lossis CAM.
Standard cov ntaub ntawv muaj nyob rau hauv Tshuag:
| Cheebtsam | Thickness | Ua siab ntev | Weave hom |
| Sab hauv txheej | 0,05mm ib | +/- 10% | 106 |
| Sab hauv txheej | 0.10 hli | +/- 10% | 2116 |
| Sab hauv txheej | 0, 13mm | +/- 10% | 1504 ib |
| Sab hauv txheej | 0,15mm 0 | +/- 10% | 1501 |
| Sab hauv txheej | 0.20 hli | +/- 10% | ib 7628 |
| Sab hauv txheej | 0,25mm 0 | +/- 10% | 2 x1504 |
| Sab hauv txheej | 0.30 hli | +/- 10% | 2 x1501 |
| Sab hauv txheej | 0.36mm ib | +/- 10% | 2 x7628 |
| Sab hauv txheej | 0 ,41mm | +/- 10% | 2 x7628 |
| Sab hauv txheej | 0 ,51mm | +/- 10% | 3 x 7628/2116 |
| Sab hauv txheej | 0 ,61mm | +/- 10% | 3 x7628 |
| Sab hauv txheej | 0.71mm ib | +/- 10% | 4 x7628 |
| Sab hauv txheej | 0, 80mm | +/- 10% | 4 x 7628/1080 |
| Sab hauv txheej | 1,0mm ib | +/- 10% | 5 x7628/2116 |
| Sab hauv txheej | 1,2mm ib | +/- 10% | 6 x7628/2116 |
| Sab hauv txheej | 1,55mm 3 | +/- 10% | 8 x7628 |
| Prepregs | 0.058 hli * | Nyob ntawm layout | 106 |
| Prepregs | 0.084 hli * | Nyob ntawm layout | 1080 |
| Prepregs | 0.112 hli * | Nyob ntawm layout | 2116 |
| Prepregs | 0.205 hli * | Nyob ntawm layout | ib 7628 |
Cu thickness rau cov khaubncaws sab nraud povtseg: Txheem - 18µm thiab 35 µm,
Raws li kev thov 70µm, 105µm thiab 140µm
Khoom siv: FR4
twg: kb.150 ° C, 170 ° C, 180 ° C
εr ntawm 1 MHz: ≤5,4 (tus qauv: 4,7) Ntau muaj nyob rau ntawm kev thov
stackup
Lub 4 txheej luam tawm Circuitboard stackup yog muaj 3 ntawm ib txheej thiab ib txheej hauv av ua nws 4 txheej hauv tag nrho.
Tag nrho cov khaubncaws sab nraud povtseg no yog siv rau kev routing ntawm cov teeb liab.
Lub frst ob sab hauv lavers yog dag hauv cov tub ntxhais thiab feem ntau siv los ua lub hwj chim panes los yog feem ntau hu ua routing of signals.
Tsuas yog hais txog 4-txheej PCB stackup yog muaj 2 ntawm singlea VCC thiab ib txheej hauv av.
Cov ntsiab lus tseem ceeb rau kev yuav khoom pcb
Feem ntau cov khw muag khoom siv hluav taws xob tau tsis meej pem txog tus nqi ntawm PCBs.Txawm tias qee cov neeg uas muaj ntau xyoo ntawm kev paub hauv PCB kev yuav khoom yuav tsis nkag siab txog qhov tseem ceeb.Qhov tseeb, tus nqi PCB yog tsim los ntawm cov hauv qab no:
Ua ntej, cov nqi sib txawv vim cov khoom sib txawv siv hauv PCB.
Noj cov khaubncaws sab nraud povtseg zoo tib yam pcb ua piv txwv, lub laminate txawv ntawm FR-4, CEM-3, thiab lwm yam nrog tuab ntawm 0.2mm txog 3.6mm.Lub thickness ntawm tooj liab txawv ntawm 0.5Oz mus rau 6Oz, tag nrho cov uas ua rau ib tug loj tus nqi sib txawv.Tus number case soldermask tus nqi kuj txawv ntawm cov khoom siv thermosetting number case thiab cov khoom siv xim ntsuab xim.
Qhov thib ob, cov nqi sib txawv vim muaj cov txheej txheem ntau lawm.
Cov txheej txheem ntau lawm ua rau cov nqi sib txawv.Xws li kub-plated board thiab tin-plated board, cov duab ntawm cov routing thiab xuas nrig ntaus, kev siv ntawm silk screen kab thiab qhuav zaj duab xis kab yuav tsim cov nqi sib txawv, uas ua rau muaj ntau haiv neeg.
