Electronics Forum: fr4 pcb (Page 1 of 27)

pcb manufacturing

Electronics Forum | Wed Jan 13 04:27:00 EST 2016 | crystalpcb

Hi Here is our factory production capability: Shenze Electronic PCB Specification Layer Count 1 to 35 Layers Material Brand Shengyi,KB,GRACE,ISOLA,Rogers,Taconic,ARLLON,Bergquist Base Material FR-4(TG135,TG150,TG170,TG180),Halogen Free FR-4,Ceramic

pcb track liting problem

Electronics Forum | Sat Jul 26 11:17:31 EDT 2008 | manishc

i am facing problem of pcb track lifing at B.G.A. after reflow.we r using lead free paste and fr-4 grade pcb with peak temp.about 270 deg.

Repair of FR4 double-sided pcb

Electronics Forum | Fri Aug 23 09:25:53 EDT 2002 | Dave Milk

Thanks for your help, Dave.

Repair of FR4 double-sided pcb

Electronics Forum | Mon Aug 26 20:29:10 EDT 2002 | davef

Sure, the 'Cheese It' Defense is an analog of the 'BIG GULP of Dew' Defense.

Repair of FR4 double-sided pcb

Electronics Forum | Mon Aug 26 17:27:28 EDT 2002 | dragonslayr

first time I've heard of the Cheese Its defense to excuse any momentary lapse of reason. I think I'ma gonna order me a case of them nibbles right away. A guy can't be too careful now adays.

Repair of FR4 double-sided pcb

Electronics Forum | Fri Sep 06 13:45:02 EDT 2002 | Cris Campos

To Scrap or not to Scrap? We have the answer to your problem. Visit http://www.circuit-techs.com for more information regarding Printed Circuit Board Repair, Rework & Modification in accordance to IPC 7711 & 7721.

Repair of FR4 double-sided pcb

Electronics Forum | Thu Aug 22 07:48:30 EDT 2002 | Dave Milk

While separating individual pcbs from a panel, operators have caused delamination of the edge of the board, at the tabs that were cut. How can these boards be repaired? The delamination causes them to fail J-STD-001C 9.2.1.1.d. Also, what would yo

Repair of FR4 double-sided pcb

Electronics Forum | Thu Aug 29 13:54:54 EDT 2002 | MikeF

I prefer to eat my crunchy Cheetos while drinking a cold Southpaw Light, at home. My second choice is a Mountain Dew and Cheetos in the afternoon to get me through the rest of the day. All y'all have a good holiday weekend. Mike F

Floor life pcb assembly

Electronics Forum | Wed Apr 23 19:00:39 EDT 2008 | stevek

It depends on the laminate but a PWB is like any other MSL component. Some fab shops are only waranting standard FR4 laminates for 45-60 days when processed at lead free temperatures. The best thing I can say is to try some weight gain/loss experim

Soldering stranded wires to FR4 pcb

Electronics Forum | Fri Oct 16 07:24:09 EDT 1998 | Howard Eccles

With current soldering of stranded wires to pcb assy's the wire tends to be very brittle and can break with very little movement of the wire. We use a low residue cored wire. Anybody with advice or who has seen a similar problem/knows how to overcome

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