Electronics Forum | Tue Dec 02 08:51:31 EST 2003 | Daniel Werkhoven
Dear Frank, could it be that your component legs are coated with a leadfree finish? This can have an inpact on soldering when your temp.peak in only 220�C and the melting point of pure Tin is 237�C. Best regards, Daniel
Electronics Forum | Sat Apr 05 21:51:42 EDT 2014 | garym4569
The 237*C is under the inductor with aTAL of 48s. I worked on the profiles this morning an got the max temp up a few degrees and the TAL to 62s. I will check the body temp of the Elec caps. The rest of the board has a max temp of 247. Thanks Gm
Electronics Forum | Mon Apr 07 13:12:02 EDT 2014 | cyber_wolf
Gary, We are missing something here. I see no evidence of reflow at all. If you have a thermo couple under the inductor, 237 deg with a TAL of 48 seconds should work all day long.(even though it may be on lower end of process window) SAC melts at 21
Electronics Forum | Mon Aug 14 04:00:25 EDT 2017 | sankarseptember
We check the TDK data sheet reflow profile condition. We check the PCB surface temperature the max temperature is 237.Anyhow We will confirm it by check temperature on TDK point
Electronics Forum | Thu Dec 21 19:24:25 EST 2000 | Alejandro Rodriguez Gallegos
Hi Sorry my poor english We have some problems with some componentes 0402 we recived by the manucterer oxide in the tape reells exactly in the bottom side to the reel I think the root cause is the oxide in the tapes rells What do you think? And ot
Electronics Forum | Tue Dec 26 11:26:00 EST 2000 | acahill
If you have a known problem with the parts, then Reject them back to the Vendor. It appears that you have a solderability issue. As for Tombstoning on 0402 chips, this could trace back to the stencil design and/or machine placement. Define Tombstoni
Electronics Forum | Wed Oct 30 09:28:50 EST 2002 | gregp
How about your designator actually contains size info in a code. For example, SO14-237-050-090. That is "package type" - "width" (over leads) - "lead pitch" - "thickness". The problem with this is a great deal of thought has to be put in before comm
Electronics Forum | Mon Feb 11 17:21:40 EST 2008 | larryd
What causes BGA voids over 25%? Have recommended profile for solder paste, hit 237C for 5 seconds and still get a void on 2% of specific BGA in various locations. BGA is FG676, 1mm pitch, on ImAg using lead free paste OM338 on a 6 layer FR4 PCB.
Electronics Forum | Wed Jun 02 11:58:20 EDT 2010 | palsingh
TDK RX-11 giving Absolute Encoder Backup Error (237-100) at start up. The machine resets pressing the button but gives X and Y axis hardware error while doing zero position. The X and Y axis does not even jog manually. I followed the manual instructi
Electronics Forum | Tue Mar 06 08:03:42 EST 2018 | wolverine55
Thanks Don, I will pass this info on to the Maintenance department at the plant where this machine is located. I did see an exec stored in the machine's host computer while it was there, it was under a UIC filename of BC237A. They have new 3.6 volt
.gif)
