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pcb Electronics Forums search results
6054 results found for pcb in 5s.
Showing matching items 1 - 50
- 98%
Double-sided boards - 4/14/07 -
- ... We can supply 1-36 layers High Precision print circuit board, Include: Rigid-flex PCB(14layers), High Frequency PCB; Impedance control PCB ; HDI PCB(10layers),Mobile Telephone PCB, Aluminum(cuprum)-backed PCB; BGA Board, Thick Au Products; Thick Copper Products; Backboard; High TG (170C) PCB ; Blind and Buried via PCB ; Free halogen PCB ; FPC Boards ...Etc. Our products having certifications of ISO9000, UL, QS9000, ROHS. It's the first tenet to supply the high quality Product. Thanks & Best ...
- 97%
PCB bake - 1/17/02 -
- PCB bake Hi, Can anyone help explain the benefits/disadvantages of bareboard pcb baking, as part of the pre-heat conditioning, before the bareboard pcb use in SMT production run? The pcb board is 200mm x 240mm panelized pcb board, and has 28 smaller pcb boards inside the entire panelized pcb. pcb thickness is 0.6mm, and has gold plated pads, typical pad footprint size is for 0402 SMD. we currently bake the bareboard pcb at 90deg-C for 1h, as this was previously set by a ...
- 96%
Re: DFM / DFT information - 7/13/00 -
- ... screen legend 11 company logo in foil 12 copyright notice on PCB 13 date code on PCB 14 PCB part number 15 assembly part number on PCB 16 all polarized components point same way 17 components >=0 2" from edge of PCB 18 ground planes where possible 19 test pad or test via on every net to allow in circuit test 20 test pads 200 mils from edge of board 21 mounting holes electrically isolated or not 22 mounting holes with or without islands 23 proper mounting hole clearance for hardware 24 all ...
- 95%
Fuji cp6 re-reading fiducials - 7/12/05 -
- ... CP6 propers, there are values: PCB Check Position X, & PCB Check Position Y. These are the servo counts that the X/Y table moves to when checking if a PCB exists on the table. Your sensor does not detect a PCB, probably because when checking, either a component is on the PCB, or, at this position, the sensor maybe above a routed out section of the PCB (either condition causing it not to detect the PCB). Change these proper values so that the sensor detects the PCB at some other X/Y position ...
- 95%
Boards getting - 8/12/05 -
- ... long period of time (depends also of how your pcb:s are made)? Second: The pcb supplier does not ship the pcb:s in a proper sealed MBB (Moisture Barrier Bag) with a moisture sensitive indicator card in it (they never do, and We All Should Complain About This), just like the way you recieve your MS-level sensitive components. I had to admit, that is very seldom that we recivie pcb:s in that type of bags. We had some success in baking pcb:s prior to assembly & reflow, beacause of board warp. But ...
- 94%
Help with a CSM 84 V - 4/15/07 -
- ... a CSM 84 V Check Running Menu Run Mode 2 = Normal (Pass) Mount = Exec (Skip) Data In > PCB > Origin > O* > Skip = No Data In > PCB > Mount > M* > Skip = No Data In > System > Parameter > Position > Waiting Pnt Check that the waiting point is not set at such a co-ordinate that the PCB sensor is seeing the gantry. The pcb sensor also has a sensitivity adjustment - it may be turned up too high. I think your pcb sensor will be DI24 on the DI/DO page. Cable number should be N24. Put your hand over ...
- 94%
Is baking PCB necessary before solder process? - 7/28/99 -
- Is baking PCB necessary before solder process? Currently, we are baking any PCB before process on SMT, the 'reason' is to dry any possible humidity that could be inner the PCB, it does not matter if the PCB is multilayer or not. We bake PCB's at 107C for 4 hrs and the board must be process into next 8 hours, if not, the PCB needs to be reconditioned again. Evenmore, nobody can tell me if this conditioning is a requirement or not, we just baked as a 'good practice'. Could someone tell me if there ...
- 94%
how to measure an assembly cost of a board - 8/12/08 -
- ... PCB onto the reflow oven is a direct cost, how about the reflow process time of the PCB while travelling inside the reflow, is that an overhead cost? another angle: say I have auto pcb bd loader, paste printer, p&p machine. my operator loads the pcb's onto the autoloader, this is direct labor cost. But the PCB automatically travels onto the paste printer and being printed then to p&p machine for population, are these considered overhead cost in the calculation? then my operator inspects each PCB ...
- 94%
fiducial mark - 3/2/04 -
- ... add that some most all machines have global correction. Most placements are an off sets from pcb 0,0 usually the lower left corner of the board. When the machine locates the fiduitals and these fids are not exactly where the data indicates they are it will make adjustments called global correction. This is to compensate for pcb srinkage or slightly shifted patterns that sometimes occure on panalized pcb's. Some machines allow for global correction to be turned off. Shifting of parts will be in ...
- 94%
Optimal Speed for Universal Chip Shooters - 6/11/03 -
- ... vacuum chamber to positive pressure at the correct time. 19. PCB Vibration- Parts may vibrate off board during population or transfer of board. 20. PCB Warpage- Verify board is within warpage spec. 21. PCB Support- Verify correct support pins are used in accordance to board thickness. 22. PCB Height Setting- Verify placement program operation data for correct PCB thickness and placement offset 23. PCB Width- Verify PCB width to rail width setting, Verify board is not trapezoid. Verify board is ...
- 94%
Uneven thermal load in PCB design. - 12/8/02 -
- Uneven thermal load in PCB design. Hi, We have been manufacturing a PCB, however it's been quite tricky to profile, as the edges of the PCB are reflowing before the center of the PCB. I have looked at the design, and there is a small power plane for 2.5 Volt in the center of the PCB. I assume this is taking longer to heat up compared to the edges of the PCB where this copper layer had not been extended out to. It's now running through the process ok, however because its our own product we can ...
- 94%
About the PCB gold finger contamination. - 9/19/02 -
- About the PCB gold finger contamination. Thank you ur reply Dave. Let me explain our COB workflow: 1. unpack PCB (FR4,LPI,HASL)(the thickness of gold and nickel we can't be find)(No SMT before) 2. clean the pcb by rubber 3. blow the pcb by di-ionic gun 4. attach die by adhesive gel 5. cure the adhesive gel at oven (100 C ,30 min) 6. bonding (wire bonding,bonder ASM AB509 ,Al wire 1 um) At step 6 we discover the pads and the wire cannot be connect. At this moment we suspect the PCB vendor give us ...
- 93%
PanaPro DSM - 9/11/07 -
- PanaPro DSM Went we buy our Panasonic line we have the DSM, I never use it because we do mix several PCB on the same set-up and want to produce top a bottom on one PCB before switching on another one, DSM don't work that way He will optimize all the PCB so we will built bottom of PCB XXXX then Botttom of PCB YYYY then he will switch back to the top of PCB XXX ...
- 93%
made in china - 12/7/06 -
- pcb factory, flex pcb, FPC,pcb , pcba ,mcpcb, made in china www.xfpcb.com XUFEI TECHNOLOGIES CO.,LTD is the professional manufacturer of flex pcb, Mcpcb and pcb. Our factory was established in Guangzhou in 1998 and then moved to Gaoming Sanzhou Zone in 2002 with the expanding of production. Our factory covers 9000 square meters and the well designed pcb factory covers 4000 square meters. Our principle is to improve without an end and pursue zero defects. We regard customers as God and quality as ...
- 93%
made in china - 11/26/06 -
- pcb factory, flex pcb, FPC,pcb , pcba ,mcpcb, made in china www.xfpcb.com XUFEI TECHNOLOGIES CO.,LTD is the professional manufacturer of flex pcb, Mcpcb and pcb. Our factory was established in Guangzhou in 1998 and then moved to Gaoming Sanzhou Zone in 2002 with the expanding of production. Our factory covers 9000 square meters and the well designed pcb factory covers 4000 square meters. Our principle is to improve without an end and pursue zero defects. We regard customers as God and quality as ...
- 93%
made in china - 10/20/06 -
- pcb,pcba,china pcb factory,flex pcb,mcpcb,made in china www.xfpcb.com XUFEI TECHNOLOGIES CO.,LTD is the professional manufacturer of flex pcb, Mcpcb and pcb. Our factory was established in Guangzhou in 1998 and then moved to Gaoming Sanzhou Zone in 2002 with the expanding of production. Our factory covers 9000 square meters and the well designed pcb factory covers 4000 square meters. Our principle is to improve without an end and pursue zero defects. We regard customers as God and quality as ...
- 93%
made in china - 10/17/06 -
- pcb factory, flex pcb, pcb , pcba ,mcpcb, made in china www.xfpcb.com XUFEI TECHNOLOGIES CO.,LTD is the professional manufacturer of flex pcb, Mcpcb and pcb. Our factory was established in Guangzhou in 1998 and then moved to Gaoming Sanzhou Zone in 2002 with the expanding of production. Our factory covers 9000 square meters and the well designed pcb factory covers 4000 square meters. Our principle is to improve without an end and pursue zero defects. We regard customers as God and quality as ...
- 93%
made in china - 10/17/06 -
- pcb,pcba,china pcb factory,flex pcb,mcpcb,made in china www.xfpcb.com XUFEI TECHNOLOGIES CO.,LTD is the professional manufacturer of flex pcb, Mcpcb and pcb. Our factory was established in Guangzhou in 1998 and then moved to Gaoming Sanzhou Zone in 2002 with the expanding of production. Our factory covers 9000 square meters and the well designed pcb factory covers 4000 square meters. Our principle is to improve without an end and pursue zero defects. We regard customers as God and quality as ...
- 93%
made in china - 10/17/06 -
- pcb factory, flex pcb, pcb , pcba ,mcpcb, made in china www.xfpcb.com XUFEI TECHNOLOGIES CO.,LTD is the professional manufacturer of flex pcb, Mcpcb and pcb. Our factory was established in Guangzhou in 1998 and then moved to Gaoming Sanzhou Zone in 2002 with the expanding of production. Our factory covers 9000 square meters and the well designed pcb factory covers 4000 square meters. Our principle is to improve without an end and pursue zero defects. We regard customers as God and quality as ...
- 93%
made in china - 10/17/06 -
- pcb,pcba,china pcb factory,flex pcb,mcpcb,made in china www.xfpcb.com XUFEI TECHNOLOGIES CO.,LTD is the professional manufacturer of flex pcb, Mcpcb and pcb. Our factory was established in Guangzhou in 1998 and then moved to Gaoming Sanzhou Zone in 2002 with the expanding of production. Our factory covers 9000 square meters and the well designed pcb factory covers 4000 square meters. Our principle is to improve without an end and pursue zero defects. We regard customers as God and quality as ...
- 93%
made in china - 10/17/06 -
- pcb factory, flex pcb, pcb , pcba ,mcpcb, made in china www.xfpcb.com XUFEI TECHNOLOGIES CO.,LTD is the professional manufacturer of flex pcb, Mcpcb and pcb. Our factory was established in Guangzhou in 1998 and then moved to Gaoming Sanzhou Zone in 2002 with the expanding of production. Our factory covers 9000 square meters and the well designed pcb factory covers 4000 square meters. Our principle is to improve without an end and pursue zero defects. We regard customers as God and quality as ...
- 93%
made in china - 10/17/06 -
- pcb factory, flex pcb, pcb , pcba ,mcpcb, made in china www.xfpcb.com XUFEI TECHNOLOGIES CO.,LTD is the professional manufacturer of flex pcb, Mcpcb and pcb. Our factory was established in Guangzhou in 1998 and then moved to Gaoming Sanzhou Zone in 2002 with the expanding of production. Our factory covers 9000 square meters and the well designed pcb factory covers 4000 square meters. Our principle is to improve without an end and pursue zero defects. We regard customers as God and quality as ...
- 93%
made in china - 10/17/06 -
- pcb factory, flex pcb, pcb , pcba ,mcpcb, made in china www.xfpcb.com XUFEI TECHNOLOGIES CO.,LTD is the professional manufacturer of flex pcb, Mcpcb and pcb. Our factory was established in Guangzhou in 1998 and then moved to Gaoming Sanzhou Zone in 2002 with the expanding of production. Our factory covers 9000 square meters and the well designed pcb factory covers 4000 square meters. Our principle is to improve without an end and pursue zero defects. We regard customers as God and quality as ...
- 93%
made in china - 10/17/06 -
- pcb,pcba,china pcb factory,flex pcb,mcpcb,made in china www.xfpcb.com XUFEI TECHNOLOGIES CO.,LTD is the professional manufacturer of flex pcb, Mcpcb and pcb. Our factory was established in Guangzhou in 1998 and then moved to Gaoming Sanzhou Zone in 2002 with the expanding of production. Our factory covers 9000 square meters and the well designed pcb factory covers 4000 square meters. Our principle is to improve without an end and pursue zero defects. We regard customers as God and quality as ...
- 93%
SMEMA conveyor - 10/30/05 -
- ... just under the nexts conveyour belt, so that the pcb will be "somewhat pulled" into the next conveyour. That is for pliable board tranfer especially with large fine pitch QFP:s. The gap between the conveyours should be as little as possible and this is just a "finger tip" senstivenes. Use your common sense. The easiest way to achieve the alignment; is to use 2 pcb:s (I assume that you have good square pcb:s and the biggest avaiable) Put one pcb on the previuous/machine conveyour and pull it ...
- 93%
LGA36 6.5 x 3.5 mm - 4/12/07 -
- ... Thanks DaveF. Our Chinese PCB vendor (for this particular customer of ours) do have a huge problem to do a proper PCB production quality. Not only do they Not tell us if there is something wrong (hard to produce or whatever) with our Customer PCB gerber-files; they actually do adjustmenst on these board files on their own, whithout asking us!!!! They will never be used again! Our next (second) protype run will take place within the next week. With the very same PCB:s from the same batch as ...
- 93%
need help with Philips CSM84 - 3/29/07 -
- ... absolute zero to where you want your datum point for the pcb to be. I like the lower left hand corner so the data is always positive. However, if your machine runs left to right you may want to teach the lower right hand corner at the m-stop. This way your X data will always be negative. If you don't use the m-stop position as your datum point, then, depending on the length of your pcb, your Origin 0 data will be different from pcb to pcb. If you never move the m-stop physically then it will ...
- 93%
Low Cost High quality pcb prototype and Assembly manufacturer(CH - 5/22/06 -
- Low Cost High quality pcb prototype and Assembly manufacturer(CH Low Cost High quality pcb prototype and Assembly manufacturer(CHINA) +silk+mask price is same. if you send pcb file to us,we will reply quote as soon! we can assembly for your company!! if any question, please send mail us!!!!!! Sell high quality HDI PCB (CHINA) we supply quick pcb. we supply color board, Mail: njpcb@vip.163.com or sales ...
- 93%
pcb physical handling - 5/4/05 -
- pcb physical handling Handling a PCB 1. Check your ESD slippers and ESD Strap first before entering the SMT production line 2. A PCB manufactred over 90 days must be stored first on the baking Oven before Production 3. Temperature on the Baking oven must be 125plus and minus 5 degree C 4. If a PCB is in the Baking Oven The Minimum hours for it to be stored there is 2 and the Maximum is 4. 5. The PCB must be reflowed in 48 hours upon opening the Bag Otherwise The PCB must be stored again in the ...
- 93%
PCB Manufacturer (SMT Technology) should read this - 6/14/04 -
- ... as long as JVM 1.4 or above is installed. - PCB Creator A tool that will aid you in creating a chip placement scheme, note we are not interested in your pcb specifics except for chip placement, so you will not be sending us your confidential pcb designs - Optimizator Client A client application that will aid you in creating a machine scheme, that is its dimensions, speed, feeder attachments and more, also you will be able to position the pcb on the machine. Once problem have been defined you ...
- 93%
PCB Prototypes - 5/6/99 -
- PCB Prototypes Dear Sirs, I need to buy some tools for PCB prtotypes manufacturing can you tell me the best place & the best price from where I can order : > 1. PCB boards coated with photoresist both Single & Double sided baords especially the double one with dimensions of 1 m square or 1/2 m square with a life guarntee not less than 3 years. > 2. Photoresist spray bottles of 200ml or more. > 3. Solder & DeSolder tools a complete kit that can be used for both SMD & Through Hole comp, with ...
- 93%
PCB Prototypes - 5/6/99 -
- PCB Prototypes I need to buy some tools for PCB prtotypes manufacturing can you tell me the best place & the best price from where I can order : > 1. PCB boards coated with photoresist both Single & Double sided baords especially the double one with dimensions of 1 m square or 1/2 m square with a life guarntee not less than 3 years. > 2. Photoresist spray bottles of 200ml or more. > 3. Solder & DeSolder tools a complete kit that can be used for >both SMD & Through Hole comp,with antistatic ...
- 92%
PCBA delam after reflow - 8/27/04 -
- ... encounter few cases PCB was delam after reflow, and the supplier was refuse that this is a PCB manufacturing defect as the fallout is low within one lot. the cost for this scrap is high after PCBA level, my query here are 1) is there any way to determine or confirm the incoming bare PCB is good before reflow? 2) i know baking before use is good, but the long cycle time is not allow me to do that, can i reflow the PCB using normal profile before printing? if the bare pcb having problem , it will ...
- 92%
Volume of paste deposited with respect to board thickness - 6/1/04 -
- ... you would have a print gap of 0 i.e. on contact printing where the PCB is in full contact with the stencil. Your 0.25mm variation in PCB thickness would introduce a print gap of 0.25 at it's highest so you would potentially get that as additional height. In reality you probably wont, as your squeegee moves across the stencil you will press it against the PCB and shear it while the stencil is still against the PCB so again your basically on contact. What you will definately get is a feathered ...
- 92%
Micro Leadless Frame - solder wetting control - 5/8/02 -
- ... we find there are 5 different varient pads dimensions measured, and PCB pad layout is irregular. E.7) we have calculated the expected deposited paste volume for each individual PCB pad, and had the stencil fab house scan each pad to get accurate dimensions. a new stencil is fab according to the scan data of the actual PCB pads. E.8) irregular PCB pad layout is found NOT matching the actual LCC component pads layout. some PCB pads is not covering enough land width to accomodate the intended ...
- 92%
HASL PCB non-wetting - 3/16/98 -
- ... problem of the PCB supplier, I would need some help to answer the following questions: 1. Does anybody encounter similar problem before? 2. How to identify the cause of it? 3. How to fix it on the raw PCB? 4. Have you heard about the term Organic Acid Tin & how does it formed? 5. What is the optimum thickness for HASL on the SMT pads for reflow soldering & wave soldering? All opinions and comments are welcome. (N.B. a small batch of the non-wetting PCB was sent to another PCB supplier to do HASL ...
- 92%
Screen Printing with a Pallet. - 7/12/01 -
- Screen Printing with a Pallet. A) Questions: 1) What sort of pallet materials used? 2) what PCB thickness & LxW size? 3) what stencil type & thickness used? 4) what profile type used (peak deg-C)? 5) any peak Deg-C contraints for the components SMT onto the PCB? B) We use pallet support, for 0.8mm PCB placement onto pallet, screen print paste with pallet support, auto-send to SMT p&p process (with pallet support), and reflow using pallet support.... (reflow was RTS profile with peak 215 deg-C) C ...
- 92%
Solder balls on solder side!! - 2/28/01 -
- ... a water based flux? Are the solder balls mainly around or near non-plated holes or near the edges of the PCB? If so the preheat must be set so the water content of the flux is fully evaporated before the board hits the solder wave. If water remains on the PCB then as the PCB hits the wave the water instantly vapourizes, causing pressure between the wave and the underside of the PCB. Where there are gaps such as non-plated holes etc. then this pressure is rapidly released, causing the molten ...
- 92%
Help! 2-layered Thru-Hole PCB Solder Mask/Soldering Problem - 9/29/99 -
- Help! 2-layered Thru-Hole PCB Solder Mask/Soldering Problem Hi everyone, Greetings! I?ve got a 2-layered through-hole PCB?s having the following problems: Solder Mask peels after wave soldering at random locations and only at the bootom side of the PCB Insufficient Solder and some solder never make it to the top-side of the pcb?s. Poor Wetting Blow-hole Some Joints have voids No Solder These problems happen only to one of our pcb vendor and the rests are okay. The solder mask type is Liquid ...
- 91%
Solder Mask Bubbling On PCB from Supported Via Holes - 7/14/08 -
- Solder Mask Bubbling On PCB from Supported Via Holes I have a board with the above problem from our PCB supplier. After they applied the solder mask and run the PCB's to HASL process, the solder mask bubbled on one side of the PCB making the solder mask thickness higher and PCB looking awkward. They said they are pushing in solder mask inside the holes during my conversation with them...what is that "pushing in solder mask inside the via" process? is this common way of applying solder mask onto ...
- 91%
PCB type for BGA - 8/7/06 -
- PCB type for BGA Dear Sir, To design PCB with 0.8mm pitch BGAs, is ENIG PCB is better than Tlectro-plating PCB? Why? Than, what is the most effective way to determine the connection between BGA and PCB is good and strong enough ...
- 91%
electrical check PCB - 1/13/06 -
- electrical check PCB Hi, I would like to ask you how you test the PCB (electrical test) of first PCB before starting production.? What kind of equipment you are using? and method to confirm that components on PCB are correct (value, orientation, describtion, polarization) against the BOM and drawing of the PCB.? We rae right now using multimeter to check all resistor, capacitor, inductor and description from the components and than comper with BOM. But we found that this is very faulty. It ...
- 91%
PCB intake speed on a Soltec oven - 12/13/05 -
- PCB intake speed on a Soltec oven Hi, We have a problem sometimes where our soltec oven will accept another PCB too soon after it's taken the last one, so the PCB will collide with the last PCB that just enter the oven, and knock half the components off one of the boards, and destroy it. Does anyone know how to set a Soltec oven to pause the in-feed conveyer until the previous PCB has progressed into the oven a safe distance. Or I thought you could do some kind of SMEMA delay between the ...
- 91%
Stencil thickness - 6/9/05 -
- ... as a carrier material. Cut lip/pocket for PCB so it is 0.05" thinner than thickness of PCB. Allow 0.010" gap on all sides of PCB. Machine lip to width between 0.050" and 0.100" to support under perimeter sides of PCB (check for interference with edge parts to determine this). Cut center material completely out as a 0.8 mm thick, small board will support itself (printer is most trouble here). Remember - BGA's will actually pop off of a PCB if the carrier is too tight - so 0.010" gap is a must! An ...
- 91%
MV2C PCB Camera -- Need replacement - 6/6/05 -
- MV2C PCB Camera -- Need replacement Hello there, We have a Panasonic MVIIC with a bad PCB camera. The amp is fine, we tested that by swapping it with the small and large parts camera. When the machine is shut down for a while and we bring it back up, it takes hours for the PCB camera to begin to function. So, that's a bad thing. What's worse is that Panasonic does not stock the camera, and they have told me that the only thing we can do is send it in for repair, which will take 3 months or ...
- 91%
Bare PCB reflow - 9/6/04 -
- Bare PCB reflow hi, we are running high mixed low volume here, and i encounter many pcb delam after reflow issue. here some doubt need ur advise: 1. actually, what is max temperature and duration can a bare PCB reflow without any quality problem? if i allow bare PCB go thru. reflow oven 2x time, what is the side effect will i face? 2. Normal baking for pcb is 125C for 24 hrs, if i would like to reduce the time, what is the max. temp can i go and what is the duration? 3. any website or article ...
- 91%
Lead Free ... - 8/30/04 -
- ... 2006 we will need to produce Lead free PCB and for now it's hard to get answer to my questions. I'm from Canada and the PCB vendors we actually have are not ready to produce Lead Free PCB ( HASL Lead Free ). For sure OSP (Entek) is not good for me. I produce 400 000 PCB per year so the price is very important but the PCB product must be easy to handle. I participate to a lot of seminar and I receive document from AIM, Kester, Motorola, Loctite and a few PCB vendors in canada. A lot of ...
- 91%
screen printer - vision - 4/27/04 -
- ... Pete C Few question. If i have fine pitch PCB for example 0.5 or 0.4 mm, it is difficult to adjust manualy without vision (for the first PCB) and accurantly solder land on PCB with stencil -> reduction apertures in stencil and question how find center?. I thought that vision start playing important role at the beginning for the first PCB, help set precisely printing process. You gave tip to work without Mylar. Ok but again how you set stencil and PCB? using magnifying glass?? to catch aperture ...
- 91%
Is there some general file format for chip placement on pcb - 11/7/03 -
- Is there some general file format for chip placement on pcb Hello, I am writing a software that deals with chip placement on PCB and I would like to know if there is some standart way to describe what are the coordinates of the chips on the pcb, I know that Gerber file contains all the drill holes and tracks, however I am more concerned with HOW do manufacturers program their machinery to place chips onto PCB. I would be very grateful if someone could briefly exaplin how do most manufacturers ...
- 91%
PCB Bake - 3/5/03 -
- PCB Bake Currently, my company's applies a PCB bake (5 hours @ 125C) for all SMT PCB's prior to surface mount assembly. Many of us believe this is a non-value added activity, and have concluded it can be eliminated. With today's PCB process controls coupled with dry packing or vacuum sealing the PCB's when shipped, the bake could be eliminated. Doe anyone out there have information in the form of engineering white papers, articles, etc. that will provide adequate data to support the hypothesis ...
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