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59PR9875N bảng dữ liệu(PDF) 44 Page - International Rectifier

tên linh kiện 59PR9875N
Giải thích chi tiết về linh kiện  16A Highly Integrated SupIRBuck Single-Input Voltage, Synchronous Buck Regulator
PDF  49 Pages
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nhà sản xuất  IRF [International Rectifier]
Trang chủ  http://www.irf.com
Logo IRF - International Rectifier

59PR9875N bảng dữ liệu(HTML) 44 Page - International Rectifier

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IR3448
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© 2013 International Rectifier
August 01, 2013
SOLDER RESIST
IR recommends that the larger Power or Land
Area pads are Solder Mask Defined (SMD).
This allows the underlying Copper traces to be
as large as possible, which helps in terms of
current carrying capability and device cooling
capability.
When using SMD pads, the underlying copper
traces should be at least 0.05mm larger (on
each edge) than the Solder Mask window, in
order to accommodate any layer to layer
misalignment. (i.e. 0.1mm in X & Y).
However, for the smaller Signal type leads
around
the
edge
of
the
device,
IR
recommends that these are Non Solder Mask
Defined or Copper Defined.
When using NSMD pads, the Solder Resist
Window should be larger than the Copper Pad
by at least 0.025mm on each edge, (i.e.
0.05mm in X & Y), in order to accommodate
any layer to layer misalignment.
Ensure that the solder resist in-between the
smaller signal lead areas are at least 0.15mm
wide, due to the high x/y aspect ratio of the
solder mask strip.
SOLDER MASK DESIGN
PAD SIZES (DETAIL 1)
SOLDER MASK DESIGN
PAD SIZES (DETAIL 2)



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