Electronics Forum: 3.2.1 (Page 1 of 1)

Lead Free Usage

Electronics Forum | Mon Dec 11 08:55:21 EST 2006 | jdengler

See http://leadfree.ipc.org/RoHS_3-2-1.asp Jerry

Topaz X Head Optimization

Electronics Forum | Thu Mar 15 21:57:41 EDT 2012 | daniel26

On your mount data it has to go 8,7,6,5,4,3,2,1 once it goes to a higher number then the previous it has place and start over try that out

Why 50 mils in 0805 package instead of 40 mils.

Electronics Forum | Fri Oct 03 09:00:18 EDT 2003 | davef

EIA standard packages have a variety of L/W proportions. EIA||Dimension mm (LXW)||Proportion (L/W) 0201||0.6X0.3||2 0202||0.5X0.5||1 0303||0.8X0.8||1 0402||1.0X0.5||2 0504||1.25X1.0||1.25 ||1.4X1.4||1 0603||1.6X0.8||2 0805||2.0X1.25||1.6 1111||2.8X2

Fuji CP 642 Communication Cables with Flexa

Electronics Forum | Tue Jul 02 10:57:29 EDT 2019 | BigFuji642

Are the pinouts for the cable mirrored (like normal Male to Female DB pinouts)? Like the Male pins when looking straight at them are 1 2 3 4 5 and the female when looking straight at it is 5 4 3 2 1 Or is it that they are not mirrored and both ar

Pcb immersion tin thickness

Electronics Forum | Wed Aug 09 08:06:07 EDT 2006 | davef

See "IPC-4554 Specification for Immersion Tin Plating for Printed Circuit Boards" 3.2.1 Immersion Tin Thickness. The most common reason for solderability issues with the white tin surface coating during multiple thermal excursions is a thin white ti

Vacuum Bags

Electronics Forum | Wed May 16 13:06:33 EDT 2007 | stepheniii

3.3.2.1 Moisture Barrier Bag (MBB) The moisture barrier bag shall meet MIL-PRF-81705, TYPE I requirements for flexibility, ESD protection, mechanical strength, and puncture resistance. The bags shall be heat sealable. The Water Vapor Transmission Rat

Moisture free storage units.

Electronics Forum | Mon Jun 16 17:13:24 EDT 2003 | fmonette

John, Maybe you know this already but I just wanted to highlight a few facts about dry cabinets. My experience is that many engineers are not well aware of the industry guidelines and sometimes will buy a dry cabinet without understanding the key f

SMT Solder paste and wave flux evaluation

Electronics Forum | Fri Jan 28 12:18:32 EST 2005 | Chunks

Your best bet is to do a decision making matrix. Each company has so many different criteria�s it's hard to pick out which one might be important to yours. Simply pick out your top 5 paste manufactures. Next decide what your "Eliminators" are - th

Foam fluxer maintenance, storage and cleaning

Electronics Forum | Sun Nov 08 15:27:25 EST 2015 | davef

Thinner: Flux thinner, NOT paint thinner We kept a spare stone in thinner in inventory. We cut PVC pipe to size, cap in one end, screw thread on the other, stone inside, filled with flux thinner and covered with a screw cap. I don't remember who we

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