wm8904 Wolfson Microelectronics plc, wm8904 Datasheet - Page 7

• Manufacturer Part Number: wm8904
• Description: Ultra Low Power Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

Pre-Production
PACKAGE DIMENSIONS
The 36-ball W-CSP package drawing is shown below.
w
NOTES:
1. PRIMARY DATUM -Z- AND SEATING PLANE ARE DEFINED BY THE SPHERICAL CROWNS OF THE SOLDER BALLS.
2. THIS DIMENSION INCLUDES STAND-OFF HEIGHT ‘A1’ AND BACKSIDE COATING.
3. A1 CORNER IS IDENTIFIED BY INK/LASER MARK ON TOP PACKAGE.
4. BILATERAL TOLERANCE ZONE IS APPLIED TO EACH SIDE OF THE PACKAGE BODY.
5. ‘e’ REPRESENTS THE BASIC SOLDER BALL GRID PITCH.
6. THIS DRAWING IS SUBJECT TO CHANGE WITHOUT NOTICE.
7. FOLLOWS JEDEC DESIGN GUIDE MO-211-C.
Symbols
2
B: 36 BALL W-CSP PACKAGE 2.641
G
DETAIL 2
D1
E1
A1
A2
f1
f2
D
E
e
g
h
A
A2
A
0.615
0.185
0.395
0.311
0.248
MIN
0.035
A
B
C
E
F
D
1
6
bbb
Z
2.641 BSC
2.000 BSC
2.515 BSC
2.000 BSC
0.400 BSC
0.258 BSC
Dimensions (mm)
Z
0.210
0.420
0.070
NOM
5
0.7
BOTTOM VIEW
A1
e
4
D1
3
0.785
0.235
0.445
0.105
X
MAX
2.515
2
DETAIL 2
1
X
DETAIL 1
0.7mm BODY, 0.40 mm BALL PITCH
NOTE
e
5
5
E1
4
2 X
2 X
A1
CORNER
0.10
0.10
Z
Z
Product Brief, Rev 3.0, February 2010
TOP VIEW
f1
6
D
h
f2
DM066.A
WM8904
E
7