Electronics Forum: bga's (Page 527 of 546)

super fine pitch paste & dispensing questions

Electronics Forum | Mon Aug 16 13:38:35 EDT 2010 | rl

i would like to request some advice on manually dispensing paste for super fine pitch components. first some background. i am a small design house and specialize in sub-miniature prototypes for avionics. so far, i have mostly used stainless steel st

Changing Ni/Au finish to HASL lead free

Electronics Forum | Wed Dec 22 01:39:06 EST 2010 | boardhouse

Hi Johan, As a Asian board supplier - I would not recommend using Lead free hasl on any product that has BGA, you would be just looking for issues, flatness being the main. I agree with one of the other replies - Your purchasing dept. should not be

Looking to start/buy/lease a small SMT shop

Electronics Forum | Tue Apr 05 16:20:49 EDT 2011 | cvoyles

I work with a small EMS shop that has extremely good capability because I created it for an R&D Lab for the U.S. Army. We have at times discussed leasing the equipment/facility to other companies who prefer that to farming out their work to an EMS.

De-Bug software for Test

Electronics Forum | Sat Oct 22 22:10:09 EDT 2011 | unisoft

Hi maybe this will help Rich larue rlarue@unisoft-cim.com ProntoGERBER-CONNECTION ( http://www.unisoft-cim.com/gerber_connection.htm ) imports raw Gerber data and allows the user to add intelligent information to the shapes on the display and c

Underscreen cleaning cycles

Electronics Forum | Thu May 17 09:01:01 EDT 2012 | scottp

I'm not sure why anyone would pay extra for FG (fine grain) stencils. I've run studies comparing traditional YAG laser, fiber laser, and E-form stencils with regular stainless, FG, and nickel foils. YAG is the worse and should only be used for pret

Entry-Level PnP + BGA?

Electronics Forum | Sat May 05 00:44:55 EDT 2012 | isd_jwendell

I currently use an Essemtec CSM7100V (I've used it for about 5 years), which will place 0.5mm pitch and 0402s. I bought this after selling a Manncorp machine (used it for about 3 years). Service from Essemtec (manufacturer) is MUCH different than Man

MSL Component - Popcorn Temp.

Electronics Forum | Wed Jul 04 09:58:50 EDT 2012 | daxman

Assuming that you have a saturated moisture-sensitive component: At what temperature would popcorning or internal component damage occur? I would guess that it would be at a temperature where water would boil, around 100 degrees? However, the JEDEC J

Reflow oven reliability?

Electronics Forum | Mon Sep 10 08:40:21 EDT 2012 | donkudner

After selecting a few ovens based on the mfr's specifications, I plan to send them a thermal "slug" to run in their ovens (a 1/4" thick, high temp fiberglass slab with imbedded thermocouples). Since we are replacing ovens with fixed speed blowers wit

X-Ray, inspection voltage, voltage blooming

Electronics Forum | Wed Feb 05 08:51:13 EST 2014 | emeto

What I think it does is to calibrate the camera. You have your tube on the bottom and your camera on the top. For my machine(Dage) I have to put the board I am going to examine inside and select a point on the board surface. THen I just click on this

Is NO CLEAN any better for High Speed PCB's?

Electronics Forum | Thu Nov 20 17:30:55 EST 2014 | gregcr

Hi All, I have a customer with a very dense design (24 layers, 0201's lots of micro-BGA and lead-less), and they run extreme data rates. Every once and a while they will have a unit that has some speed fall off and they attribute that to the possib


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