Package_outline_dimensions_and_layout
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Rev. 90
122 of 316
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Package Outline Dimensions
Suggested Pad Layout
© Diodes Incorporated
Package Outline Dimensions
U-DFN4040-8
U-DFN4040-8
Dim Min Max
Typ
A
0.57 0.63
0.60
A1
0
0.05
0.02
A3
-
-
0.15
b
0.20 0.30
0.25
D
3.95 4.05
4.00
D1 2.05 2.25
2.15
D2 0.90 1.10
1.00
E
3.95 4.05
4.00
E1 1.00 1.20
1.10
E2 2.50 2.70
2.60
e
-
-
0.80
L
0.35 0.45
0.40
Z
-
-
0.675
All Dimensions in mm
Suggested Pad Layout
U-DFN4040-8
Dimensions
Value
(in mm)
C
0.800
X
0.350
X1
1.150
X2
1.100
X3
2.250
X4
2.750
X5
3.650
Y
0.600
Y1
2.700
Y2
1.200
Y3
2.700
Y4
4.300
D
D2
E E2
A
A1
A3
(Pin #1 ID)
Seating Plane
Z
b
e
X1
1
X
C
Y
X5
X3
Y2
X3
Y2
Y1
X2
C-0.279
Y3 Y4
X4
X1
ALL DIMENSIONS ARE NOMINAL VALUES SHOWN IN MILLIMETERS
Note: The suggested land pattern dimensions have been provided for reference only, as actual pad layouts may vary depending on application. These numbers
may be modified based on user equipment capability or fabrication criteria. A more robust pattern may be desired for wave soldering and is calculated by adding
0.2 mm to the ‘Z’ dimension. For further information, please reference document IPC-7351A, Naming Convention for Standard SMT Land Patterns, and for
International grid details, please see document IEC, Publication 97.
Rev. 90
123 of 316
www.diodes.com
Package Outline Dimensions
Suggested Pad Layout
© Diodes Incorporated
Package Outline Dimensions
W-DFN5020-6
W-DFN5020-6
Dim
Min
Max
Typ
A
0.75
0.85
0.80
A1
0
0.05
0.02
A3
-
-
0.15
b
0.20