Electronics Forum: index (Page 7111 of 7888)

Conformal Coat

Electronics Forum | Thu May 26 09:54:49 EDT 2016 | swag

Not exactly SMT but something I recently did that might save you lots of time and money: Complex high $ assy that has 25+ conformal coat keep out areas - most different shapes. All locations are dimensioned on customers' print. We tried a one piec

Quad 4C nozzle changer

Electronics Forum | Wed Jun 01 11:02:57 EDT 2016 | claudea2

I have 3 used Quad 4Cs and the nozzle changer on one machine never worked. I decided to troubleshoot it this week. I repaired the changer by changing a defective optical sensor but I still get error 17 when I try a run-step nozzle 1, 2 or 3. Error 17

IC void

Electronics Forum | Thu Jun 02 22:40:13 EDT 2016 | slouis2014

Hi, yes have a few experiments initially i tried to increase the solder volume but component pin have insufficient solder. 1. The solder coverage do you calculate it by solder volume or solder area. 2. if i would achieve as you recommend 50-60 % woul

Wave Solder Bean Bags

Electronics Forum | Thu Jun 09 20:48:07 EDT 2016 | deanm

I'm assuming these are two leaded axial components. GPD Global makes fluid dispensing and component prep equipment. Component leads can be formed (or bent) in order to provide some resistance in the hole during insertion. This should prevent the comp

Wave Solder Bean Bags

Electronics Forum | Fri Jun 10 12:48:55 EDT 2016 | deanm

Kyle,thank you for steering me back on track. For relays and connectors I like Tom's suggestion provided you are allowed to add materials to your assemblies. An instant adhesive or perhaps a chip bonder (used in SMT) may work if the preheat is high e

Thermal relief question

Electronics Forum | Wed Jun 08 17:35:04 EDT 2016 | slthomas

We all know that whenever possible, we want thermal relief between the barrel/pad and the copper foil to make it easier to properly solder that through hole connector. My question is, assuming there is no connection from the barrel to a copper layer

Used auto printer; any to avoid?

Electronics Forum | Sat Jul 16 18:40:12 EDT 2016 | aemery

As an MPM guy and would choose.....MPM, surprise! Of the legacy models the UP2000 seems to be the favor among most of my clients. Newer models like the Accuflex's and Accela/Momentims are great, but as far as the old stuff the UP2K's are the favorit

high speed PCB frequency range

Electronics Forum | Sat Jun 11 07:58:17 EDT 2016 | davef

IPC-2252 - Design Guide for RF/Microwave Circuit Boards IPC-2251 - Design Guide for the Packaging of High Speed Electronic Circuits IPC-2141A - Design Guide for High-Speed Controlled Impedance Circuit Boards IPC design standards https://portal.ip

ENIG (thru hole ring turns black after wave soldering)

Electronics Forum | Tue Aug 02 15:02:50 EDT 2016 | davef

ASPIS (Advanced Surface Protection for Improved Reliability PCB Systems) The three year Aspis ‘Research for SMEs’ project has been conducted to address problems found with the nickel gold (ENIG) solderable finishes that are used by the electronics in

does anyone know about JUKI electric feeder and machinery feeder difference

Electronics Forum | Fri Jun 24 22:36:17 EDT 2016 | yokywong

now days, I face a problem for JUKI electric feeder and machinery feeder. i do not know about any of electric feeder. until now, we all use machinery feeder for CF081ER 7' real holder and 15' real holder,CF03HPR ,FF12FS,FF16FS,AF24FS-OP. but this tim


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