ACPM-7881-BLK datasheet(11/12 Pages) AVAGO

Part #	ACPM-7881-BLK

Description	No regulated voltages required

Download	12 Pages

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Manufacturer	AVAGO [AVAGO TECHNOLOGIES LIMITED]

Direct Link	http://www.avagotech.com

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11

PCB Design Guidelines

TherecommendedACPM-7881PCBlandpatternisshown

inFigure16.Thesubstrateiscoatedwithsoldermaskbe-

tweentheI/Oandconductivepaddletoprotectthegold

padsfromshortcircuitthatiscausedbysolderbleeding

/bridging.

Stencil Design Guidelines

Aproperlydesignedsolderscreenorstencilisrequiredto

ensureoptimumamountofsolderpasteisdepositedonto

thePCBpads.Therecommendedstencillayoutisshownin

Figure17.Thestencilhasasolderpastedepositionopening

thatisapproximately80%ofthePCBpad.Reducingthe

stencilopeningcanpotentiallygeneratemorevoids.On

theotherhand,stencilopeningslargerthan100%willlead

toexcessivesolderpastesmearorbridgingacrosstheI/O

padsorconductivepaddletoadjacentI/Opads.Consider-

ingthefactthatsolderpastethicknesswilldirectlyaffect

thequalityofthesolderjoint,agoodchoiceistouselaser

cutstencilcomposedof0.100mm(4mils)or0.127mm(5

mils)thickstainlesssteelwhichiscapableofproducing

therequiredfinestenciloutline.ThecombinedPCBand

stencillayoutisshowninFigure18.

Figure 16. PCB land pattern (dimensions in mm)

Figure 17. Stencil outline drawing (dimensions in mm)

Figure 18. Combined PCB and stencil layouts (dimensions in mm)

.1

0.

1.

0.

.1

1.

0.

Stencil

Opening

0.

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ACPM-7881-BLK Datasheet(PDF) 11 Page - AVAGO TECHNOLOGIES LIMITED

ACPM-7881-BLK Datasheet(HTML) 11 Page - AVAGO TECHNOLOGIES LIMITED

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