PCB fa’alavelave masani

1. White, revealing the texture of the glass cloth

faʻafitauli mafuaʻaga:

1. The resin fluidity is too high;

2. The pre-pressure is too high;

3. O le taimi o le faʻaopoopoina o le mamafa maualuga e le saʻo;

4. O le resini o loʻo i totonu o le laupepa faʻapipiʻi e maualalo, o le taimi gel e umi, ma e tele le suavai;

fofo:

1. Fa’aitiitia le vevela po’o le mamafa;

2. Reduce pre-pressure;

3. Mataʻituina ma le faʻaeteete le tafe o le resin i le taimi o lamination, pe a uma le suiga o le mamafa ma le maualuga o le vevela, fetuunai le taimi amata o le faʻaogaina o le mamafa maualuga;

4. Adjust the pre-pressure\temperature and the start time of high pressure;

Lua, fa’afu, fa’afu

faʻafitauli mafuaʻaga:

1. E maualalo le mamafa muamua;

2. O le vevela e maualuga tele ma o le va i le va o le mamafa muamua ma le mamafa atoa e umi tele;

3. O le viscosity malosi o le resin e maualuga, ma o le taimi e faaopoopo ai le mamafa atoa ua tuai;

4. The volatile content is too high;

5. E le mama le mea fa’apipi’i;

6. Poor mobility or insufficient pre-stress;

7. E maualalo le vevela o le laupapa.

fofo:

1. Faʻateleina le mamafa muamua;

2. Fa’alili i lalo, fa’ateleina le fa’aosoina pe fa’apu’upu’u le ta’amilosaga muamua;

3. The time-activity relationship curve should be compared to make the pressure, temperature and fluidity coordinate with each other;

4. Reduce the pre-compression cycle and reduce the temperature rise rate, or reduce the volatile content;

5. Faʻamalosia le malosi o le gaioiga o togafitiga faʻamamā.

6. Increase the pre-pressure or replace the bonding sheet.

7. Siaki le faʻavevela afi ma fetuunai le vevela o le stamper vevela

3. E iai lua, resini ma maanuminumi i luga o le laupapa

faʻafitauli mafuaʻaga:

1. Le lelei o le faʻaogaina o le LAY-UP, vai stains i luga o le mata o le ipu uʻamea e leʻi soloina mago, ma mafua ai ona maanuminumi le pepa apamemea;

2. O le pito i luga o le laupapa e leiloa le mamafa pe a oomi le laupapa, lea e mafua ai le tele o le resini gau, leai se kelu i lalo o le pepa apamemea, ma maanuminumi i luga o le pepa apamemea;

fofo:

1. Faʻamama ma le faʻaeteete le ipu uʻamea ma faʻalelei le pito i luga o le pepa apamemea;

2. Faʻalogo lelei i le faʻaogaina o le pito i luga ma lalo o papatusi ma papatusi pe a faʻatulagaina papatusi, faʻaitiitia le faʻaogaina o le mamafa, faʻaoga le maualalo o le RF% ata tifaga, faʻapuupuu le taimi tafe resin ma faʻavave le vevela vevela;

Fourth, the inner layer graphics shift

faʻafitauli mafuaʻaga:

1. O le totonugalemu apamemea apamemea e maualalo le pa’u malosi po o le le lelei o le vevela tetee po o laina lautele e manifinifi tele;

2. The pre-pressure is too high; the dynamic viscosity of the resin is small;

3. E le tutusa le mamanu lolomi;

fofo:

1. Su’i i le laupapa fa’alava-lava-i totonu maualuga;

2. Faʻaitiitia le faʻamalo muamua pe sui le laupepa faʻapipiʻi;

3. Adjust the template;

Five, uneven thickness, inner layer slippage

faʻafitauli mafuaʻaga:

1. The total thickness of the forming plate of the same window is different;

2. The accumulated thickness deviation of the printed board in the forming board is large; the parallelism of the hot-pressing template is poor, the laminated board can move freely, and the entire stack is off the center of the hot-pressing template;

fofo:

1. Fetuuna’i i le mafiafia atoa tutusa;

2. Fetuuna’i le mafiafia, filifili apamemea faaofuina laminate ma se eseʻese mafiafia laʻititi; fetuunai le tutusa o le laupapa ata tifaga vevela, faʻatapulaʻa le saʻolotoga o le tele-tali mo le laupapa laminated, ma taumafai e tuʻu le laminate i le ogatotonu o le mamanu vevela;

Ono, va’ava’a fa’atasi

faʻafitauli mafuaʻaga:

1. Le faʻalauteleina o le vevela o mea faʻapipiʻi totonu ma le tafe resini o le laupepa faʻapipiʻi;

2. Heat shrinkage during lamination;

3. O le faʻalauteleina o le vevela o le mea laminate ma le faʻataʻitaʻiga e matua ese lava.

fofo:

1. Pulea uiga o le pepa faʻapipiʻi;

2. O le ipu ua uma ona togafitia i le vevela;

3. Fa’aoga le pito i totonu o le laupapa fa’aofuina apamemea ma le pepa fa’apipi’i ma le mautu lelei.

Seven, plate curvature, plate warpage

faʻafitauli mafuaʻaga:

1. Asymmetric fausaga;

2. Le lava le taamilosaga faamalolo;

3. The cutting direction of the bonding sheet or the inner copper clad laminate is inconsistent;

4. O le tele-layer board e faʻaaoga ai papatusi poʻo pepa faʻapipiʻi mai tagata gaosi oloa eseese.

5. O le laupapa multilayer e le lelei ona taulimaina pe a maeʻa le faʻamalolo ma le tuʻuina atu o le mamafa

fofo:

1. Strive for symmetrical wiring design density and symmetrical placement of bonding sheets in lamination;

2. Faʻamaonia le taamilosaga faʻamalolo;

3. Taumafai mo le fa’atonuga o le tipi.

4. O le a aoga le faʻaogaina o mea e gaosia e le kamupani lava e tasi i se faʻapipiʻi tuʻufaʻatasia

5. The multilayer board is heated to above Tg under pressure, and then kept under pressure and cooled to below room temperature

Valu, stratification, stratification vevela

faʻafitauli mafuaʻaga:

1. High humidity or volatile content in the inner layer;

2. High volatile content in the adhesive sheet;

3. Pollution of the inner surface; pollution of foreign substances;

4. The surface of the oxide layer is alkaline; there are chlorite residues on the surface;

5. O le oxidation e le masani, ma o le tioata o le oxide e umi tele; o le mua’i togafiti e le’i lava le vaega o luga.

6. Insufficient passivation

fofo:

1. Before lamination, bake the inner layer to remove moisture;

2. Faʻaleleia le siosiomaga teuina. E tatau ona fa’aaogaina le pepa fa’apipi’i i totonu ole 15 minute pe a uma ona aveese mai le si’osi’omaga fa’agogo;

3. Faʻaleleia le gaioiga ma aloese mai le paʻi i le vaega aoga o le faʻaogaina o luga;

4. Faʻamalosia le faʻamamaina pe a uma le faʻamaʻi faʻamaʻi; mataʻituina le tau o le PH o le vai faʻamamaina;

5. Faʻapuupuu le taimi faʻamaʻi, fetuunai le faʻaogaina o le faʻamaʻi faʻamaʻi poʻo le faʻaogaina o le vevela, faʻateleina le micro-etching, ma faʻaleleia le tulaga o luga.

6. Mulimuli i le faagasologa o manaoga