Electronics Forum: flexjet and 4 (Page 13 of 40)

Heat guns and component damage

Electronics Forum | Tue Jan 31 15:15:13 EST 2006 | russ

Heat guns used improperly will definitely damage components. You must have a controlled heat gun that can be set to the max temp you want pb =215C max, Pbfree maybe 240C max. This heat gun must not be able to be adjusted or you must have total trus

Heat guns and component damage

Electronics Forum | Tue Jan 31 15:51:04 EST 2006 | russ

Relays huh? I can tell you from previous experience that relays are not a good heat gun candidate. Did you check how long this part can withstand the 240? I do not know what the 4 setting is on a liester but it is probably well in excess of the 24

Wave Cassettes and Heat convection

Electronics Forum | Tue Jan 16 07:07:17 EST 2007 | tk380514

Answers: The component does take solder, no problem We get a full barrel fill with an empty PCB but only on one of the holes, the other hole has so much copper around it. The flux reached the top of the PCB when I tested the empty PCB. The IPC-A-610

Leaded and Lead-Free Wave Parameters

Electronics Forum | Wed May 21 13:59:19 EDT 2008 | pjc

Here's what I've seen for no-clean flux applications: Leaded: Dwell Time is? 2 - 3 seconds Top side board temp max? If some small SMT parts reflow are we too hot? 110 to 120C top side board temp just before hitting the wave(s) Pot temp. 245C Lea

Block repeat and fiducial relation

Electronics Forum | Tue Aug 19 13:35:51 EDT 2008 | stefi

Hello, I need an advice regarding the next issue: in the case of Assembleon Topaz or Emerald SMT machines, is there necessary to teach first the block repeat coordinates and after that the PCB fiducial coordinates when you do not have these coordina

Block repeat and fiducial relation

Electronics Forum | Fri Aug 22 15:27:13 EDT 2008 | wayne123

this is the order that I use. 1. Teach pcb origin 2. Teach fiducial location 3. dial in vision on fid in mark info. 4. go into mount and verify that the primary image is on in x/y (after perfoming a teach trace condition) and then do any offsetts if

Solder Paste Storage and Control

Electronics Forum | Thu Oct 30 11:34:51 EDT 2008 | davem

Guys, So I recently started working for a small CM in Southern N.H. We currently use 2 Magic Chef Mini wine friges to store the solder paste (63/37, RoHS). I've been monitoring the room temp (and humidity) and the frige temps all this week. The pro

assembly cleanliness and ionic testing

Electronics Forum | Thu Feb 12 11:57:59 EST 2009 | jmiller

i have searched the forum for hours. read all the threads that deals with cleanliness and ionic testing. (http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=40295) (http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=22603) (http://www.

01005 components and reflow profiles

Electronics Forum | Mon Apr 09 19:50:33 EDT 2012 | action_101

Hello, We're building some boards with 01005's and the only issue we are running into is the solder is not reflowing. It's the damnest thing, we are having no issues with the printing process or placing the components, the two areas we thought we wo

paste Sn42/Bi58 and Lead Finish

Electronics Forum | Wed Nov 07 15:01:18 EST 2012 | nikyta

Thanks Dave , my question is about Spopov want to try "Lead Free" SnBi (but uses it on Leaded finishes), but is worry about its low melting point (at this point, no longer 138 degrees as he wrote, but rather in an unknown and unpredictable range bet


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