Full Site - : pad width to lead width (Page 21 of 23)

two-sided design guidelines

Electronics Forum | Fri Oct 18 09:50:02 EDT 2002 | russ

Steve, I am not aware of any standards so to speak. But IPC 782 and 770 have some useful info regarding mounting and pad geometries for wave etc... Since I do not know what type of components you will be wave soldering I will just give you some

Re: Aperture Reduction for QFP (fine pitch)

Electronics Forum | Wed Sep 22 22:23:55 EDT 1999 | SY

| | | | | My stencil thickness is 6 mil and we got qfp's with fine pitch. | | | | | how many percent should i reduce my stencil aperture using a 6 mil stencil for 0.5 mm pitch and 0.4 mm pitch ? | | | | | | | | | | thanks | | | | | | | | | We use 6

Paste in hole

Electronics Forum | Thu Sep 04 10:24:39 EDT 2003 | paulrm

The typical PIP process is incorporated into the surface mount process. This approach requires the following: The stencil will be designed so that the correct amount of solder paste can be printed onto the through-holes to form an acceptable joint

Foam fluxer maintenance, storage and cleaning

Electronics Forum | Mon Nov 09 09:44:22 EST 2015 | davef

Purpose. This describes setting-up a wave soldering system set-up for a new assembly design or checking a wave solder machine operation with a test board. Applicability. To be used for new design printed circuit assembles and during machine accept

solder paste

Electronics Forum | Wed Jul 27 09:58:05 EDT 2011 | davef

Pressure printing systems Conventional stencil printing techniques have fundamental limitations as regards paste handling: The volume of paste available for printing is limited, so frequent replenishment is necessary Paste is difficult to c

Re: DFM / DFT information

Electronics Forum | Thu Jul 13 22:20:38 EDT 2000 | Dave F

=10 mils larger than lead 3 silk screen legend text weight >=10 mils 4 pads >=15 mils larger than finished hole sizes 5 place through hole components on 50 mil grid 6 no silk screen legend text over vias (if vias not solder masked) or holes 7 so


pad width to lead width searches for Companies, Equipment, Machines, Suppliers & Information

SMTAI 2024 - SMTA International

World's Best Reflow Oven Customizable for Unique Applications
Electronics Equipment Consignment

High Resolution Fast Speed Industrial Cameras.
Selective soldering solutions with Jade soldering machine

High Throughput Reflow Oven


"Heller Korea"