Electronics Forum | Tue Jun 20 20:22:15 EDT 2000 | Dave F
Hi Jack: Welcome!!!! Yours sounds like an interesting project. In response to your questions: A1. Each traditional L8 run requires 8 runs. So, how did you select a L8? A2. In addition solder height and volume as characteristics, consider deposit
Electronics Forum | Mon Jun 19 14:53:28 EDT 2000 | Mike Demos
I'm looking for some design paramters for perforated tabs. These are the tabs that connect the circuit board to the break-away pannel material. I've never used these before, but I've seen some that have reportedly worked well. These tabs are ident
Electronics Forum | Mon Jun 19 21:37:14 EDT 2000 | Dave F
Mike: Look a the Hadco DFM manual ( http://www.hadco.com/ ) Yano if you�re lookin� for uniformly smooth (not silky smooth) board edges, have you considered scoring to separate your boards? Scoring has: * Minuses (straight lines only, stress on so
Electronics Forum | Tue Jun 20 20:31:12 EDT 2000 | Dave F
Chrys you're fine. On scoring: * Be sure spec material remaining, not what is removed. * Be sure that the v-grooves are perpendicular to each other, not off set. * Typ spec for for .062 thick boards FR-4 0.018-0.024 MC-3 0.030-0.040 * HADCO recomm
Electronics Forum | Mon Jun 19 02:46:34 EDT 2000 | Manohar Singh
We have Fuji IP3 Machine with SMD3 Vision system. We are in an attempt to place BGA on the PCB with IP-III. The BGA is a 256 Pin, the ball size on device is minimum-25 mils, maximum-35 mils, PCB pad size is 32 mils. We don't have any specific inspect
Electronics Forum | Mon Jun 19 21:38:58 EDT 2000 | Dave F
Mohammed: Huuumm, identifying components, sounds like a dangerous thing to do, if you�re in the assembly business. ;^) Try: � "Component Identification Desk Reference Manual", with an IPC ordering code of DRM-18. This book is not a standard, but
Electronics Forum | Sat Jun 17 08:57:13 EDT 2000 | Ashok Dhawan
Smtnetters One more question on ESD Control program. Does anyone ground there power equipments and how ? e.g., Pneumatic torque tools , electric screwdrivers, hand soldering stations, solder pots etc. I am not sure about pneumatic hand tools , howev
Electronics Forum | Sun Jun 18 13:15:57 EDT 2000 | Kevin Simpson
HI, We have placed with both Fuji Qp's and Universal Gsm's. We are running a small coil now on a Gsm with a sucessful rate.The Qp done well also, but the product is not ran on a Qp line, so no true production rate has been determined.I don't feel
Electronics Forum | Tue Jun 13 12:45:22 EDT 2000 | Peter Field
Help!!! We are using Fuji CP6 machines. The nozzles use those gloss yellow (sort of fluorescent) disks to provide contrast between the component and nozzle for centring. My operators keep damaging the disks causing the machines to need recalibratio
Electronics Forum | Wed Jun 14 12:43:52 EDT 2000 | Todd Murphy
Dave, you are right you would expect the soldermask to be higher than all SMT pads on the pcb if it is higher on the fine pitch components, but the other areas of the board do not concern me as much as the fine pitch areas. The pads on all the other
