Electronics Forum: marking and rob (Page 1 of 18)

Motorola Optocoupler marking

Electronics Forum | Mon Jan 30 07:22:51 EST 2006 | Rob

Hi Nick, It's probably one of two devices - MOC8020 or MOC8021 depending on the CTR (Current transfer ratio). I have always used http://www.icmaster.com for older semiconductor datasheets. (Back in the old days we used to use the IC master data boo

Yamaha pick and place

Electronics Forum | Tue Apr 10 02:57:53 EDT 2018 | rob

Yes I would, most of our old Yamaha machines (before 2005) will do 30-35 microns @ 3 sigma with the fine camera option. Our Jukis with His res camera's will hit it too. You should be OK with most things after 1997 with the right camera choice (whic

does anyone know about JUKI electric feeder and machinery feeder difference

Electronics Forum | Mon Jul 25 03:39:25 EDT 2016 | rob

A 200% + increase in load time certainly erases > any thoughts of efficiency in my mind. We have tried the Visker Electric feeders out (Yamaha & Juki)and they are nice and smooth, with a faster recovery rate, also adjustable pitch. However, with

SMT LINE CHOICE

Electronics Forum | Wed Mar 21 14:12:38 EDT 2018 | rob

Yep, especially if they are the silicon domed type that mark easy. We gang pick LEDs on our Yamaha kit, getting 12 at a time per side, but we have the luxury and volume of having multiple reels of the same components.

Online Label printing & placement

Electronics Forum | Mon Sep 12 03:38:03 EDT 2016 | rob

Hi John, We picked up a used laser marker (Asys ALS03) last year for around 30K euros and it has done approx 2M codes (we use 6mm square QR) in the last year without fault - it reads them all back to confirm which is handy. We also use labels, and

JUKI vs UIC Pick N Place Machines

Electronics Forum | Fri Apr 06 02:17:15 EDT 2018 | rob

@ Sr.Tech, Most of our Chinese spares are Juki & Yamaha original & still bagged, just much cheaper. They wouldn't sell machines in China if all the spares and consumables were at European mark ups. Nozzle wise the Juki 750 & 760 copies are not 100%

BGA's, 0402's and HASL Boards

Electronics Forum | Wed Dec 22 12:36:36 EST 2004 | rlackey

Hi Mark, Look on the bright side, if you want to change from HASL you've got the lead free issue which will allow you to evaluate all other finishes, and find the best one for you. Dave, have you seen any unleaded HASL finishes & any issues arising

Touch-up and Inspection Process

Electronics Forum | Tue Mar 01 10:31:26 EST 2005 | Greg

QC --> Touch-up --> QC --> Assembly After SMT all PWB goes to QC, QC Inspects and marks all that needs rework then PWB's goes to Touch-up to fix what QC marked for rework. After that All reworked boards goes to QC for another verification and stampi

Touch-up and Inspection Process

Electronics Forum | Tue Mar 01 10:43:59 EST 2005 | Rob

Hi Greg, Is anyone logging the errors at QC/touch up stage so they can feed them straight back to SMT and fix them? (i.e. skipped components, poor paste coverage etc) Obviously the faster you spot an error the cheaper it will be for you. Cheers,

Flexi boards and uBGA

Electronics Forum | Thu Jul 06 12:06:12 EDT 2006 | pavel

Rob, do you have any tip on reliable supplier of "really flat" flexible pcb? We tried several but all with issues. Thank you. Pavel

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