Electronics Forum: (2.1) (Page 1 of 12)

Cross Section Equipment

Electronics Forum | Wed Aug 18 21:04:45 EDT 2004 | davef

Sectioning equipment suppliers: Leco, Struers, Buehler General automatic and manual sectioning methods: IPC-TM-650 2.1.1 and 2.1.1.2

Is there a cross section standard test method...

Electronics Forum | Mon Mar 24 10:38:33 EDT 2008 | davef

No standard, but common practice is: IPC-TM-650 Test Methods Manual * Method 2.1.1, Microsectioning, Manual Method * Method 2.1.1.2, Microsectioning, Semi or Automatic Technique

Sample preparation

Electronics Forum | Tue Apr 12 20:46:50 EDT 2016 | davef

IPC-TM-650 Test Methods Manual, 2.1.1 Subject Microsectioning, Manual and Semi or Automatic Method [ https://www.ipc.org/TM/2-1-01F.pdf ]

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

SPC Plus 3.4.2.1

Electronics Forum | Thu Jan 10 09:44:49 EST 2008 | laplooi

Is there nobody who's working with SPC Plus, or maybe any other program?

GSM Discrete I/O Address List

Electronics Forum | Mon Jan 18 12:49:38 EST 2016 | ttheis

The machine is running UPS 3.2.2c on OS/2 2.1.

Jedec / IPC

Electronics Forum | Tue Sep 19 21:24:59 EDT 2006 | davef

JEDEC - http://en.wikipedia.org/wiki/JEDEC IPC - http://www.ipc.org/contentpage.asp?Pageid=2.1.0.1 You should use the design rule that produces the best results.

CCGA and overprinting?

Electronics Forum | Mon Oct 15 12:42:36 EDT 2001 | davef

I hate getting "roped" into math stuff, but here I go again ... Area of aperture = volume of paste / stencil thickness = {[5000 mil^3] / 5 mil} = 1000 mil^2 Side of the square aperture = Sqrt of the area = [1000 mil^2]^1/2 = 32 mil Diameter of ape

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

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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