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. Thu, 17 Apr 2014 03:49:57 GMT PoP parts http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17460 Hello all, does any body place PoP parts? We are running them through a regular process(paste place reflow) and we don't have good rates on these. Mostly we observe opens at the sides of the part. We are thinking to purchase a flux feeder, but I wanted to see what are your opinions. Regards, Emil Wed, 16 Apr 2014 19:17:11 GMT Fuji CP642 Hardware NG issue http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17454 So we had a ringblow pump blow up in our CP642. We replaced it and now we are getting hardware NG errors very intermittently.(2-4 times during and 8 hour shift) I see that the x-motor fan, cam motor fan,and oil cooler are all in this circuit. When it starts coming up with the error I see the light flickering on M1-CR1E-H relay which tells me it is loosing 24V. The relay has been replaced and we still have the issue. There is a timer in the circuit (M1TR3X) which is labeled Ready/NG. If we increase the timer the errors seem to become much less frequent but I want to fix the underlying issue. Has anyone ever come across this before ? Wed, 16 Apr 2014 16:58:00 GMT Depanelizer for scoring groove PCBs http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17448 I need support to find out a good compact depanelling equipment that can be setup in a work cell as part of the final assy process for PCBs with scoring groove. If someone has experience with something similar any suggestion of guidance will be helpful. Wed, 16 Apr 2014 12:50:56 GMT Samsung SM421/F Optimized Feeder List http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17459 I would like to output optimized feeder list in a text format for my inventory clerk to sort the components in the same order and the feeders. Wed, 16 Apr 2014 06:23:37 GMT Combining two similar footprints - absolute no, or might work - tips to improve odds? http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17463 I've got a small smt board I've already got working prototypes of, which uses a tactile switch. I've got another much less expensive tact switch of similar size that I had avoided due to a difference in actuators I originally had no way around. Now I think I've got a way around that issue, and would like to design the board so it could be used with either switch if possible. Both switches have four leads. There is overlap between the manufacturer-recommended pad layout for one switch and the manufacturer-recommended layout for the other switch, but it isn't exact. (One has the leads slightly further apart and a bit differently sized.) Also, one manufacturer recommends rectangular pads, the other recommends a squat T shaped pad. I've attached an image that shows the two separate footprints, and also shows them overlaid. I've designed a number of prototype boards in the past, but am new to design for automated SMT production. So I thought I'd get some advice here about the advisability / likelihood of success of combining the two footprints. My thought was to make a composite pad the shape of the two pads overlaid, but have separate stencils, applying solder paste only for the particular switch being used in that run. We are likely to be having them assembled in runs of 1k-2k boards. The boards are double sided with SMT components on both side. The switch and a couple of 8-pin SOICs are the largest components. This is for a consumer application in a very benign environment, so I'm not too worried about part of the pad (corresponding to the switch not being used) being exposed without soldermask. Thoughts? Tue, 15 Apr 2014 16:07:18 GMT Cleaning old built up flux residues from reflow oven http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17461 Have an older reflow oven which I need to clean up collected flux residues from the chain, mesh, intake/exhaust areas, slides etc heavy brown dust, likely water soluble residues, lots of polymerized brown resin as well. Tue, 15 Apr 2014 15:49:57 GMT IONX CLEANING http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17464 Tue, 15 Apr 2014 09:00:48 GMT EMC Spirit II stencil cleaner http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17462 Does anyone have an EMC Spirit II stencil cleaner and could provide insight on it? We were thinking of purchasing a used one. Thanks! Mon, 14 Apr 2014 12:17:42 GMT Samsung CP45FV Neo http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17402 Hello. Does anyone know how to add a different package to the Part Group on the Samsung CP45FV neo software? See picture. For example if we wanted a heading for Inductors, how do we add that? Thanks Fri, 11 Apr 2014 11:41:31 GMT Jot J501-21 router http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17453 Hi, I have been tasked with getting a Jot router back working, but have none of the accompanying documentation. When machine is powered up the user interface monitor does not turn on, although it does have some power going to it because I can see the screen brighten slightly and faint lines across the screen. The computer seems to power up no problem (although I can't tell for sure because there is no monitor) and the handheld is functioning. If anybody could point me in the direction of the machines documentation or suggest what I could do this would be much appreciated. Kind Regards, Eoghan Thu, 10 Apr 2014 04:52:18 GMT aaaaaaaaaaaaaa http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17458 Thu, 10 Apr 2014 03:49:30 GMT Jot Router Software http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17457 Thu, 10 Apr 2014 03:47:56 GMT aaaaaaaa http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17456 Thu, 10 Apr 2014 03:46:43 GMT aaaaaaaa http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17455 Thu, 10 Apr 2014 03:46:11 GMT Incomplete reflow http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17451 We are in the process of launching a new product and found reflow solder issue with one of the inductors. I have set oven profile to paste specifications. I just finished profiling with thermocouple under problem component. All other components exhibit proper wetting. This is a lead free process using a AIM NC257-2 SAC305 paste. BTU Pyramax98 7 zone oven. Profile detail under component in question: max temp=237*C, TAL=56sec Thanks in advance, GM Tue, 08 Apr 2014 08:04:57 GMT Jot J501-21 router http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17452 Tue, 08 Apr 2014 03:39:17 GMT Electrolytic Capacitor http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17450 What is the inspection procedure How to test leakage current Is 100% checking is required at IGI inspection What is the shelf life of the capacitor How much period shelf life is recommended for these capacitors How to check the ripple current of these component in this application What is the procedure to calculate the expected life of these capacitor What all the precautions to be taken for handling, storage & mounting these capacitors Pls explain each & every parameter of the capacitor How to select a capacitor for filtering purpose What is the meaning of vent & why the ven twill not be same for all the parts Is electrolytic leakage is a sign of end of life. Why electrolyte leaks? Pls forward any case studies if u have on ele cap failures so that we can trouble shoot the future problems effectively. Pls clarify the above problems for better understanding of this capacitor functionality. So that we can use this in suitable locations only. Regards, Jyothi E Mon, 07 Apr 2014 13:52:32 GMT Mirtec Aoi Programming (double sided pcb) MV-2HTL 1.3 megapixel camera software rev 4 http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17444 Hello there everyone! Our company just bought an AOI Inspection Machine, and that is the Mirtec MV-2HTL 1.3 megapixel, software rev 4. I am trying to create a program that runs the top side first and then asks to run the bottom side consecutively. I have no problem running or creating a program for the top side. Fri, 04 Apr 2014 21:16:56 GMT Nordson Dage XD7600NT vs Nikon XTV160 http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17449 Hi All, I am looking at new X-ray systems and have shortlisted the Nordson Dage XD7600NT (Ruby) and the Nikon XTV160 (Revolution). I would greatly appreciate it if somebody can highlight the pros and cons of each? My concerns are software usability (easy programming and runs), maintenance and low cost of ownership. Thanks in advance! -Sid U. Thu, 03 Apr 2014 17:50:53 GMT Fuji CP3 R FENCE Problem http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17447 Thank you for all help. Finally I got this old machine ran. Now sometimes, I get this error " R FENCE " . I checked the center photoelectric beam at the rear of the machine was good. Sometime I 'm so lucky turn it on and it work. now the problem occurs at all time. I change the first I/O board. till the same. would any one has experience about this problem. please thanks Thu, 03 Apr 2014 12:36:30 GMT Humidity control system http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17446 We are trying to setup a closed loop humidity control system that will maintain the RH at about 45% on our 24,000 Sq ft factory. Can we just these systems spray city water or does it have to be DI or treated water? Thanks! Wed, 02 Apr 2014 09:45:25 GMT Looking for a new pick & place machine http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17439 We are going to buy a new pick & place machine and we have an offer for a Siplace SX1 and we want to know your opinion about this machine or siplace in general. thanks Mon, 31 Mar 2014 14:52:02 GMT SIPLACE SX1 vs FUJI AIMEX II http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17443 We have to buy a Pick&Place machine. We do small series and prototipes, 2-3 changes/day, so we need a flexible machine, that permits quick changes. We are looking at SIPLACE SX1 and FUJI AIMEX II. Could you give us your opinion? Thanks Sun, 30 Mar 2014 02:01:46 GMT Underfilled BGA Removal http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17440 My company is researching the use of re-workable underfill for use on our avionics boards. We are currently testing Hysol UF3810. The Rework machine we use has a vacuum based removal system witch isn't strong enough to overcome the underfill. We have looked at twisting the parts but on some of the chips there is not enough room to do this. Can anyone suggest any other methods for removal? Fri, 28 Mar 2014 16:27:43 GMT aligning mecchanical alignment station on CSM84 http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=17434 I have a 3 head CSM84 without vision. I have set up head 3 without chuck jaws to use with the mechanical alignment station. When I got the machine all the M.A. offsets were zero. Over time, I have gotten them closer, but I really don't understand the procedure for properly setting these offsets. It gets complicated, as the head offset interacts with the M.A. offsets in a very confusing way. I've now got it within about .2 mm or so, but I think it could still be closer if I knew what I was doing. It is easy to get it to work for one rotation of the placed component, but to get it to align well at all 4 rotations is driving me nuts. Does anybody still remember this machine? Mine is a PA130620, with the DC brush motors. Thanks, Jon Fri, 28 Mar 2014 00:13:29 GMT