SMTnet.com Electronics Manufacturing Forum http://www.smtnet.com/Forums/ Printed circuit board assembly, surface mount technology and electronics manufacturing forum discussions from SMTnet.com. Wed, 22 Feb 2017 15:30:10 GMT How much it costs to building a PCB factory? http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19417 Hi If I want to build this board :( <a class=roll href="http://wiki.friendlyarm.com/wiki/ima...-Schematic.pdf" target="_blank">http://wiki.friendlyarm.com/wiki/ima...-Schematic.pdf </a>) in large number, I like to know: 1-What should be the minimum level(number) of production? 2-How much it costs to buy the PCB product line for that purpose(Multi layer board) and assemble it(Peak and Place machines)? 3-How many square meters space do I need at least? 4- May you list what machines do I need? I know it's very big question but hope you help me as much as you can! Very thank you in advanced! Wed, 22 Feb 2017 10:18:47 GMT Conformal coat material dispensed through epoxy needle? http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19399 We're looking to add conformal coating to some of our pcb's which range from 2x2" to around 6x6". I would like to use a coating material that is not nasty smelling requiring ventilation or filtration if possible. Are there conformal materials that are easily dispensed from a needle on an epoxy dispenser instead of a sprayer? What other options might we have? Wed, 22 Feb 2017 09:17:08 GMT Cleaning PCB After Soldering - How? http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19430 Which is the best way to clean the PCB after soldering? Is it good enough with IPA (isopropyl) or with the Flux Remover spray? However, we use a lead free solder wire (3,5% flux inside the core) and after the soldering its a visible wet and surface gets clean but it leaves sticky on it. But same things occurs when cleaning with IPA.The PCB material is FR 4. I hope we get a productive discussion on this and will get the best solution? Wed, 22 Feb 2017 03:29:09 GMT Starting new soldering process http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19449 We're about to setup our own soldering process... I have some experience from the contract manuf industry. Types of solder processes: - tip soldering robot for low volume - Japan UNIX LASER soldering machine for high volume Questions: 1) Examples of fluxes that can be used for either of the 2 processes - currently looking at: Sparkle Flux SR-12 to be used with an AIM Sn100C solder 2) Looking for ocnsistent flux dispensing solutions; currently using the infamous flux bottles 3) Automated cleaning solutions post-soldering with multiple non-washable, unsealed components on PCBA; currently manually cleaning with a brush & wipes Currently looking at YesTech AOI and manual inspection methods for our IPC Class-3 products. Any tips on process development? FYI, the PCBs in question are about 10"x4". Thanks! Tue, 21 Feb 2017 17:11:24 GMT Solder splash from component terminal http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19434 Hi fellow professionals, Wondering whether anyone has experience with solder splashing from component terminal. Have identified the source using the component without printing solder paste on PCB. Wondering the root-cause of the solder splashing from the component terminals. High temperature of the component solder itself. Tue, 21 Feb 2017 16:39:03 GMT Juki ke-750 not of origin http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19448 Hello friends, I'm having a problem with a juki ke-750 when I connect it, I do not know the origin of it, but try to show it at the beginning, but then right away, it's the process that may be somebody please. Tue, 21 Feb 2017 06:49:41 GMT PCB Design Question - Hard gold or ENIG for keypad button contacts http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19442 I'm a PCB designer working on a board that has a rubber keypad with control buttons mounted to it. The PCB contains the corresponding contact patterns for the buttons - a typical interlocking finger pattern. In the past when I've encountered this scenario I've specified hard gold over nickel plating for the button contacts. However, the engineers I'm working with are considering using the standard ENIG finish to save some cost. The application in question is an industrial control that will see what I would consider moderate usage of the buttons over a 10-20 year projected lifespan. I'm thinking that max button presses would be in the 10,000 to 20,000 range over the product's lifespan with the average probably being much lower than that. These devices are typically mounted indoors and not subject to extremely harsh environmental conditions but could possibly experience temperature fluctuations between 0F and 100F over their lifespan. Does anyone have any opinions on this? Is ENIG sufficient for this type of application? Tue, 21 Feb 2017 03:20:57 GMT MPM Ultraprint 3000 HiE weird I/O board problem? http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19446 Hi guys. I'm dealing with 3 MPM Ultraprint 3000 machines in our plant that were showing different issues. I managed to solve most of them but one is killing me and I can't seem to solve it. It's a 3000 HiE model... Basically, the machine seems to be operating fine but frequently goes crazy and and activates a bunch of outputs and inputs which are visible on IOMB2 board. It usually lights up all 8 LEDs on P6A, P6C, P10A and P10C. Sometimes all LEDs on P6B light up as well. I emphasize that not only that LEDs light up, but the signal on these outputs is activated as well which makes a mess of the machine. Only other thing I've noticed on the machine that seems to be out of ordinary is that it frequently cancels interlock bypass, than I bypass it again and it is again canceled after a short period of time. Any ideas? Tnx Mon, 20 Feb 2017 15:28:15 GMT Regarding BGA Pad Lifting http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=18610 I have pad lift issue during the rework on Motorola box DSR600 which has the fault of No log and No boot. Pad lifting pattern is on four corners. I have checked the temeprature difference between the corners which is sam as center. I have attached the profile picture and pad lifted pictures. If any body has any idea or sugestion, please let me know. Mon, 20 Feb 2017 08:33:57 GMT Siplace X2 inkspot http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19225 Hello, im using Siplace X2, i have problem im using inkspot. My inkspot is color black. When manually inspected to the machine it can detect correctly, but when i run it in auto, still the machine mount the component in a pcb that has a inkspot. Need your expert advise esp. to all the siplace programmer outder. Mon, 20 Feb 2017 04:57:51 GMT Damaged laser in Juki KE-2000 http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19445 Hello I am want to replace damaged laser in Juki KE-2000 . Could anyone give me passwords for Service Engineer level for full calibration. Thanks for advance. My email address is <a class=roll href="mailto:sacd@interia.eu">sacd@interia.eu </a> Sun, 19 Feb 2017 11:03:52 GMT Juki Service Engineer password KE2000 http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19444 Sun, 19 Feb 2017 10:52:01 GMT CSM84VIII http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19443 Hi, i need file user.fdr, user.mch, user.vis to CSM84 VIII? anyone have these files? Fri, 17 Feb 2017 10:55:21 GMT Electrovert oven zone http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19441 Was wondering if anybody has experience a zone that will not get up to temperature. I changed the Solid state relay, made sure the thermocouple is working. The only thing I can think of is the bottom heater panel has a corroded/broken wire which is a pain to get out. Any thoughts would be greatly appreciated. Thanks Fri, 17 Feb 2017 07:18:52 GMT Reflow for the first time http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19432 Today I tried to reflow a PCB for the first time. It did not went well. Can anybody tell me what did I do wrong? Thu, 16 Feb 2017 14:45:49 GMT Folungwin http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19440 Folungwin and those that sell their kit like to make a big deal out of the fact they have an very large installation base, especially in China. On paper their Reflow Oven are very highly specced and unlike some of the other Chinese reflow ovens I haven't spotted vast numbers of them being sold under various other names or as no-name devices by distributors. Who out there has experience with these ovens, failures, service spares etc? I would love to hear how they perform in the real world, especially if you have more than one. Thu, 16 Feb 2017 07:14:29 GMT Reflow Profiling for Duel Line oven http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19402 What is the method of Reflow profiling for a duel line reflow?? I am planning to have a duel line Reflow oven for cell phone production. As 2 types of PCB ( Top + Bottom) will enter machine at the same time and both will have different numbers of mounting point that is why I need to know the method of Reflow profiling for such process. Thu, 16 Feb 2017 02:03:36 GMT Oil for BTU Pyramax 98 oiler http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19439 Hello. Just called btu and they recommend BIRAL BIO-30. Couldn't find any distributor in Canada. Do you know any equivalent? Thanks Wed, 15 Feb 2017 14:25:34 GMT MY19 factory/setup manuals http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19438 Wed, 15 Feb 2017 14:05:43 GMT Nitrogen gassing ring http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19425 Hello to all, I am using ersa versaflow 3 selective soldering machine, i am having problems with nitrogen gas ring contamination. How can i clean this rings,what do you use? Ultrasonic bath maybe? Wed, 15 Feb 2017 08:14:59 GMT Dry solder http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19335 Hi, We are doing pin in paste reflow process in one our product ( but paste printed on bottom side of the board and top side will be assembled through hole component)in which faced cold solder issue in THT capacitor location after reflow. The solder paste is melted and getting up to primary side of the PCB(at component side)but not soldering with component lead and PCB pad. The above said problem is occurs randomly like as one shift in a day or one day in a week. We tried with different analysis but issue not resolved and the analysis is below as, 1.Component lead tinning before manual assembly into the PCB. 2.Alternat component part used. 3.Stencil aperture opening increased to increase paste volume. We suspect the pin to hole ratio in respective component location and details is, component lead dia - 0.45mm and PCB hole dia - 0.7mm and the variants is 0.25mm. So kindly help to provide the standard value of pin to hole ratio to check the above mentioned value. And also any one kindly provide the solution to arrest this issue. Note: The PCB having solder pad at secondary side only, there is no pad on primary side. Wed, 15 Feb 2017 01:49:34 GMT warp and twist http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19437 I have been asked a very good question but have not been able to find a good answer. IPC for both PCB and PCBA refer to the X & Y dimensions to measure warp and twist but how would you determine the warp and twist for a round PCB or PCBA? Tue, 14 Feb 2017 22:20:10 GMT Solder bath temperature http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19373 i have an issue with solder bath temperature. there is a big difference in temperature of alloy in the middle of the bath and at the ends(about 35C). i took down heating elements for inspection and they look fine. its just that most of the heat is created at middle of bath and while there is working temperature at middle, solder alloy hasnt melted yet at ends. this becomes even bigger problem when pump is started, leading to mixing of different temperatures alloys and shutting down pump. model is EBSO SPA 400. heaters are declared as 400V 1400W. i have just bought it from FixTrade and it was supposed to be in working condition, but as is now we are far away from starting production with this machine. Tue, 14 Feb 2017 01:00:47 GMT warp and twist http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19436 Mon, 13 Feb 2017 22:58:29 GMT What is the role of IPC training in PCB Manufacturing and Repair? http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19433 IPC standards are used by the electronics manufacturing industry. IPC different courses are available like IPC-A-600 Acceptability of Printed Boards IPC-A-610 Acceptability of Electronic Assemblies IPC-6011 Generic Performance Specification for Printed Boards etc which are used worldwide for original equipment manufacturers and EMS companies. Mon, 13 Feb 2017 08:32:41 GMT