Electronics Forum: pins (Page 91 of 229)

Re: Temperature profile req's for Pin In Paste process

Electronics Forum | Fri Apr 10 10:04:44 EDT 1998 | justin medernach

| I would like to invite everyone to share/discuss | information/knowledge/experience they have with | the req's that are assumed to be valid for the | temperature/time relation in the process of reflow | soldering Pin In Paste, Intrusive Reflow or w

Re: Placing 160 Pin QFP on Fuji HP machine?

Electronics Forum | Wed Feb 25 23:19:41 EST 1998 | Steve Gregory

Eric, You've got a Fuji FHP? WOW! It still runs even! That was the first fine pitch machine I ever worked with, along with the FEP's and CP-2's. Unless Fuji has changed the machine software, I don't know what he may be talking about. They

Wave Soldering Thick PCB's

Electronics Forum | Mon Jan 28 19:58:58 EST 2002 | davef

Well, reflow certainly would increase your preheat, wouldn�t it? On the other hand, some PTH [and SMT] components cannot bear the heat of a reflow oven. Some boards will never see proper barrel fill, because of either: * Design of the board. * Sl

PURCHASE PRICE,SCREEN PRINTER

Electronics Forum | Wed May 15 17:49:44 EDT 2002 | slthomas

We have two E5's, and like them a lot. If money were easier to come by we'd buy one more. Tech. support is excellent, print quality is good (I only have semi-auto clamshell machine prints to compare them to, and it's no comparison). They don't offe

Polarity for SMT Devices

Electronics Forum | Tue May 28 09:08:52 EDT 2002 | pjc

Silkscreening is falling out of favor, as it should. SMT IC devices can have their "pin one" solder lands indicated by a round mark, like a fiducial or a "1" mark, both made from either the copper clad PWB material or silkscreened. I have seen some w

Coin Cell Battery

Electronics Forum | Wed Aug 14 21:13:30 EDT 2002 | davef

Insulating tab approach, like: * Go to page 5 of http://www.kalatel.com/lit-rack/install-man/kts_253_253-16_man.pdf * http://support.tandy.com/support_radios/doc64/64039.htm * Go to �Fixing�, Step 6 of http://www.sunvic.co.uk/TLX%20Digital%20Room%2

64 pin 10mm QFP w/ 0.5mm lead pitch & E3 Coating

Electronics Forum | Wed Aug 21 20:11:34 EDT 2002 | mitch

We are going to begin using a 64 pin 10mm QFP with 0.5mm lead pitch. I was recently asked if we need to purchase our PCB with E3 coating instead of tinned pads when using the .5 pitch. The concept being suggested is that the E3 coating will give us b

Solder printing issues

Electronics Forum | Fri Nov 08 05:08:28 EST 2002 | zolasteven

Can anyone advise on the following : 1. Insufficient pcboard support during printing We are printing on double sided pc boards (approx. 8 ins by 6 ins). There is a problem of high paste when we are printing the second side. The reason bsing the boa

Copper oxide

Electronics Forum | Thu Jul 31 11:33:51 EDT 2003 | yngwie

I faced problem over connecter's pin that were hot air soldered. This connector has 168 pins ( similar to the straddle connector ). The process is to apply the flux onto the connector's J-leads, and the hot air pencil were then ran thru' the leads to

Where to start with a new reflow oven

Electronics Forum | Fri Oct 17 16:55:30 EDT 2003 | russ

Okay, I'm here in Colorado and I used indium 92J and loved it. My test dept. hated it! It leaves a pretty large amount of residue that apparently increased the pin maintenance. The company I worked for actually switched from this paste to another b


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