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Author Topic: in house PCB fab? tulad ng sa raon na quality. anu mga kelangan kong materials?  (Read 1412 times)

Offline updated

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anu ano mga dalubhasa kelangan kong alamin sa  pagsimula ng ganito, ayaw na kasi magpagawa sa PCB fab. sariling gawa na lang daw.

eto mga naisip ko.
1, fr4 na copper clad, gaano ka kapal?
2, etching tank? palagay ko sa kuripot ng amo ko ako din gagawa.
3, silkscreen? meron na dito kaso yung kimiko anu?
4, ano yung pintura na ginagamit nila na kulay berde at ano din yung sa sa ibabaw.

ano pa ba ang kelangan ko?

sa mga dalubhasa diyan. kelangan ko ang inyong patnubay.
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Offline rdpzycho

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naku baka mas mahal 'yan sis, lalo na kung 'di ganung kalaki ang quantity. Solder Mask ang tawag doon sa kulay berde, hindi siya ordinary paint. sini-silkscreen din 'yun.

depende sa application sis kung gaanong kakapal. with typical applications, ok na 'yung 0.5oz to 1oz.

tapos kung gagawing presensitized, merong tutorial si sis Martin. ok 'yun for large quantity, pero kung small quantities, mas mura pa ring bumili ng prepared presensitized boards.

kung double sided, kailangan ng plating sa through hole, eto ang medyo mahirap gawin. though pwede namang gawing doble ang butas tapos papasukan ng wire. AFAIR, meron ding tests si tita Nanotech on through hole plating.

'yung etching tanks, kailangan lang nakatayo 'yung mga boards. pwedeng gumamit nung pump sa aquarium para umikot 'yung FeCl. or simplest, lagyan lang ng maraming motor vibrators para lang gumalaw 'yung etchant.
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Offline Born2BeWired

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@ Outdated

Mukhang sakit ng ulo ang hanap mo ah? ;D
Electronics <- Once you got a taste of it, you will never get enough.

Insanity <- Doing the same thing, expecting different results.

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Offline updated

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sis, mas pro gagawin. target nila 1000 pcs daw muna. pasaway kasi yung consultant n chinese. binigyan ng idea boss ko. hehe. negosyante lang kasi. gagawa ako inveter eh. sariling gawa daw lahat. siguro hnd ko nalang lalagyan ng solder mask. ok lang daw kahit panget yung loob kasi hnd nmn daw nakikita. sobrang pagtitipid kasi. kaso SOIC yung mcu. panget ng kakalabasan pag walang solder mask.

na explain ko na din sa amo ko na kung in house single side lang magagawa. nasabi ko na din yung process kaso mas lalung pinilit na dito nlng daw lahat gawin.

siguro nga gawin ko dito tulad ng etching machine ko sa bahay, nakuha ko kay martin yung idea.

regarding sa silkscreen at sa equipment related dun meron na kami kasi EL yung product nmn
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pesteng consultant kasi. OK na ako sa pcb fab!!. insultant tlg. basta ipapasa ko sa mga taga silkscreen yung trabaho. hehe

hnd marunong mag english. parang mga ibong mga tao dito pag tinatawag siya. salamat sa google translate nakakausap ko kahit papanu.
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Offline Born2BeWired

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Marahil makakamura ka sa material, pero itaga mo ito sa bato, expect at least 50% ng output mo dadaan sa repair. Mas mahal lalabas ito in the long run. Ako na lang kunin mong insultant ;D
Electronics <- Once you got a taste of it, you will never get enough.

Insanity <- Doing the same thing, expecting different results.

"The more I learn, the more I am humbled."

Offline Kaizer03

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pesteng consultant kasi. OK na ako sa pcb fab!!. insultant tlg. basta ipapasa ko sa mga taga silkscreen yung trabaho. hehe

hnd marunong mag english. parang mga ibong mga tao dito pag tinatawag siya. salamat sa google translate nakakausap ko kahit papanu.

gaano karaming PCB ba need mo? magcosting ka muna sis,

iba pa rin yung nakaless sa work and time kesa nakatipid sa budget pero more on work and time naman ang ipapalit mo
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Offline Born2BeWired

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Wait, di ba si Boss Martin tumatanggap nyan?
Electronics <- Once you got a taste of it, you will never get enough.

Insanity <- Doing the same thing, expecting different results.

"The more I learn, the more I am humbled."

Offline updated

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mga sis, hnd ako makakapag costing kasi ayaw sakin sabihin yung cost ng pcb fab. chinese din yung kausap, ang problem ayaw sabihin sakin kung anu ang napag usapan. kinocontrol kasi nila lahat ng imformation especially sa price at sa mga suppliers. sabi nila sila daw bahala sa price. at ang lage nila sinasabi sa china nga ganun bakit tau hnd natin pede gawin.

sagot ko nmn pede kaso handa ka ba sa mga gagawin. e mukang game nmn
"DO YOUR ORDINARY DUTIES EXTRAORDINARILY WELL."

Offline updated

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regrding sa quantity, depende sa mga orders ng client. sa estimate daw nila ay mga 1000pcs daw muna.

hnd ko na siguro problema ito. ipapasa ko sa mga taga silk screen. ibigay ko nlng yung specs at sila na bahala. yung sa pag etch at pag butas nlng yung problem ko.
"DO YOUR ORDINARY DUTIES EXTRAORDINARILY WELL."

Offline Kaizer03

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^

pafab mo na lang... chinese naman din pala.. :D masmura sa kanila yan :D kesa maglolocally inhouse fab ka.. instead yung time mo eh ginagamit mo to focus with your design works eh nasa PCB fabs ka, or nag-aayos ng mga pumalpak na results..


regrding sa quantity, depende sa mga orders ng client. sa estimate daw nila ay mga 1000pcs daw muna.

hnd ko na siguro problema ito. ipapasa ko sa mga taga silk screen. ibigay ko nlng yung specs at sila na bahala. yung sa pag etch at pag butas nlng yung problem ko.

gaano kalaki yung board? double sided ba? gaano karami yung via, at ano ang minimim track size ng PCB as well as yung clearance?
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Offline rdpzycho

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Kaya nung mga Chinese kasi naghihiraman sila ng makina. Hindi na manual labor. Ang 15x15cm board, double sided, nasa 1.5usd per piece lang.
‎"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
- Rene Descartes

"For every difficult problem there is always a simple answer and most of them are wrong."
- Clayton Paul

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Wait, di ba si Boss Martin tumatanggap nyan?

ayaw ng boss ko na ipagawa. sariling sikap daw ;D

mga master. ayun n nga. alam na nila yung costing pero eto pa din pinili nila. kaya mukang mag aadjust nlng ako sa gagawin ko. kakapalan ko nlng traces. mas gusto ko tlg pcb fab. kasi wala na akong iisipin pa, kung ayaw nya tlg. wala din nmn ako magagawa. hayaan ko nlng. makikita din nila yung result pag nag mass pro na,

at palage nmn pala tambay yung 3 tao nya. sila na bahala. pati siguro pag bubutas ipapasa ko na din.  ;D ;D
"DO YOUR ORDINARY DUTIES EXTRAORDINARILY WELL."

Offline updated

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single side lang gagawin ko. simple lang nmn yung circuit,
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Offline Born2BeWired

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I sincerely hope I will be wrong, but you need to prepare yourself. ;D

Majority of electronics assembly quality problem can be directly linked to the quality of the PCB. The fact that you have no prior experience in PCB fab will be by itself an enormous odd to beat. Being the designer, magiging problem mo yan, he he. This will haunt you, not only during production, hangga sa kamay na nang customer yan.

Welcome to the temple of the Doomed. Of course I could be wrong ;D
Electronics <- Once you got a taste of it, you will never get enough.

Insanity <- Doing the same thing, expecting different results.

"The more I learn, the more I am humbled."

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I sincerely hope I will be wrong, but you need to prepare yourself. ;D

Majority of electronics assembly quality problem can be directly linked to the quality of the PCB. The fact that you have no prior experience in PCB fab will be by itself an enormous odd to beat. Being the designer, magiging problem mo yan, he he. This will haunt you, not only during production, hangga sa kamay na nang customer yan.

Welcome to the temple of the Doomed. Of course I could be wrong ;D

salamat sa advice. so the only thing i can do for now is to prepare proper document for it, so that i wont be the one to blame. its their choice not mine. kapag may error report nlng.

I still hope na maging ok lahat. kapag hindi tlg then its time for a change. ;D for now this will be a good experience
"DO YOUR ORDINARY DUTIES EXTRAORDINARILY WELL."

Offline rdpzycho

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lalo na kung silkscreen nga at hindi naman for PCB work talaga 'yung ginagawa dati, pwedeng magkaroon ng ga-hibla ng buhok na jumps, and for a Power Inverter, kaboom, kapag biglang nagkaroon ng contact. ;D
‎"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
- Rene Descartes

"For every difficult problem there is always a simple answer and most of them are wrong."
- Clayton Paul

Offline NanotecH

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for beginners, mahirap nga yan dahil parang mangangapa ka pa. pero in the long run, matututo ka naman.

kung sa akin yan, gagawin ko dahil tama ka, sila naman ang nagpropose nyan hindi ikaw mismo.

ang kailangan mong malaman ay saan mo idi-dispose ang chemicals.

medyo magastos yan pero kung handa silang bumili ng mga gamit at materials, why not...

kung mechanical etching mas ok dahil mababawasan ang chemical waste mo.

medyo mahal lang pero para professional ang dating ng mga pcb/traces mo puede kang gumamit ng dry-film photoresist at soldermask dahil ganyan ang ginagamit ng ibang pcb prototyping companies.

kung double-sided ang gagamitin mo, gumamit ka ng conductive electroplating ink.
kung iisipin mo medyo mahirap ang holewall activation (double-sided pcb) pero with the right equipment/materials/knowledge magagawa at mape-perfect mo yan.

check mo dito: http://www.thinktink.com/stack/volumes/volvi/pcbproto.htm
dahil dyan bumibili ng materials ang isang company ng power supply dito sa pinas.  meron ding info dyan sa pagset-up ng PCB shop.

check mo rin dito yung portable pcb rapid prototyping machine nila: http://www.lpkf.com/
220V/10A input = 220V/30A output...Fact or Fiction?  Myth or Reality?
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Offline Kaizer03

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for beginners, mahirap nga yan dahil parang mangangapa ka pa. pero in the long run, matututo ka naman.

kung sa akin yan, gagawin ko dahil tama ka, sila naman ang nagpropose nyan hindi ikaw mismo.

ang kailangan mong malaman ay saan mo idi-dispose ang chemicals.

medyo magastos yan pero kung handa silang bumili ng mga gamit at materials, why not...

kung mechanical etching mas ok dahil mababawasan ang chemical waste mo.

medyo mahal lang pero para professional ang dating ng mga pcb/traces mo puede kang gumamit ng dry-film photoresist at soldermask dahil ganyan ang ginagamit ng ibang pcb prototyping companies.

kung double-sided ang gagamitin mo, gumamit ka ng conductive electroplating ink.
kung iisipin mo medyo mahirap ang holewall activation (double-sided pcb) pero with the right equipment/materials/knowledge magagawa at mape-perfect mo yan.

check mo dito: http://www.thinktink.com/stack/volumes/volvi/pcbproto.htm
dahil dyan bumibili ng materials ang isang company ng power supply dito sa pinas.  meron ding info dyan sa pagset-up ng PCB shop.

check mo rin dito yung portable pcb rapid prototyping machine nila: http://www.lpkf.com/

ayos, point for you..

ano twag dun sa DIY soldermask material sis?

may mapagkukunan ako ng murang dry-film photoresist(or sadyang mura lagn talaga ito?) wala pa nga lang budget kasi may minimum amount yung pag-order ng items :D
Lend a hand for those who are in need!=)

Stop Hijacking!=) More Technical Posts!=)
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thanks sa mga advice. Discuss ko muna sa kanila, wag lang sana makialam yung insultant ;D

mag focus nlng muna ako sa single side. kapag kinailangan na saka nlng ung sa double side. 1 step at a time nlng. natanung ko nga pala si employer sabi nya kahit walang soldermask. kahit siguro varnish lang papatusin nun. basta makamura! ;D ;D ;D
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