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SL40307A-R19KHF Datasheet(PDF) 49 Page - International Rectifier

Part # SL40307A-R19KHF
Description  Single-Input Voltage, Synchronous Buck Regulator
PDF  53 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

SL40307A-R19KHF Datasheet(HTML) 49 Page - International Rectifier

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IR3846
49 www.irf.com
© 2013 International Rectifier
August 01, 2013
STENCIL DESIGN
 Stencils for PQFN can be used with thicknesses of 
0.100-0.250mm  (0.004-0.010").  Stencils  thinner 
than  0.100mm  are  unsuitable  because  they 
deposit  insufficient  solder  paste  to  make  good 
solder  joints  with  the  ground  pad;  high 
reductions  sometimes  create  similar  problems. 
Stencils  in  the  range  of  0.125mm-0.200mm 
(0.005-0.008"), with suitable reductions, give the 
best results.  
 Evaluations  have  shown  that  the  best  overall 
performance is achieved using the stencil design 
shown  in  following  figure.  This  design  is  for  a 
stencil  thickness  of  0.127mm  (0.005").  The 
reduction should be adjusted for stencils of other 
thicknesses.  
SOLDER PASTE STENCIL PAD SIZES



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