Electronics Forum | Wed Mar 28 14:51:13 EDT 2007 | ck_the_flip
Real Chunks: I heard that Pete C=(5/9)*(Pete F-32)
Electronics Forum | Mon May 20 16:15:48 EDT 2019 | davef
Resources are: * IPC-7525A - Stencil Design Guidelines, 3.5.2 Step-Up Stencil This type stencil is useful when it is desirable to print thicker solder paste in a small portion of the stencil. An example would be a ceramic BGA where it is necessary t
Electronics Forum | Fri Sep 13 14:37:24 EDT 2002 | norvica
I have an Altai mains adapter. Input 240v ac Output 3,4.5,6,7.5,9,12 v dc 300mA MAX It has a polarity plug where you plug in the lead. I want to run a 3v Fuji film digital camera. Do i plug in the plug so the + goes to the - or the + goes to the +
Electronics Forum | Tue Feb 25 20:59:40 EST 2020 | luciano_zhang
we want to find the replacement of this part B57860S 7003 series https://p03.ickimg.com/datasheet/9f/08/6ec5/9f/2d97d88d13f7a49395fa5c693f14f05f.pdf does any one know if it have alternative ones?
Electronics Forum | Tue Dec 16 15:43:26 EST 2008 | fctassembly
Converting your machine from lead to lead-free can be performed in a few steps: 1)Ensure the solder bath is up to temperature 2)De-dross the solder bath 3)Remove pumps/ flow ducts; etc. clean very well- set aside 4)Purge leaded solder 5)Remove as muc
Electronics Forum | Thu May 31 21:45:48 EDT 2012 | davef
rsthompson ... if you're talking about bare boards IPC-5701, Users Guide for Cleanliness of Unpopulated PBC, Table 8 ||Bare board final surface finish Ions||Hot air solder level||OSP over copper||Gold over nickel Chloride||0.75 ug/cm^2||0.75 ug/cm^2
Electronics Forum | Wed Jul 25 23:35:18 EDT 2001 | mugen
my guys SOP : Round #1 1) take double-side tape, and peel it flat to the PCB. 2) process this PCB only through P&P SMT. 3) confirm the SMD placement Round #2 4) take thin plastic sheet and tape corners flat to the PCB. 5) solder paste print over t
Electronics Forum | Wed Jul 25 23:37:11 EDT 2001 | mugen
my guys SOP : Round #1 1) take double-side tape, and peel it flat to the PCB. 2) process this PCB only through P&P SMT. 3) confirm the SMD placement Round #2 4) take thin plastic sheet and tape corners flat to the PCB. 5) solder paste print over t
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
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