PRELIMINARY
CM1637
Mechanical Details (cont’d)
UDFN-12 Mechanical Specifications
Dimensions for the CM1637 suplied in a 12-lead,
0.4mm pitch UDFN package are presented below.
Mechanical Package Diagrams
PACKAGE DIMENSIONS
D
Package
UDFN
12 11 10 9 8 7
✝
JEDEC
No.
MO-229C
Pin 1
Leads
12
Marking
Millimeters
Nom
Inches
Nom
Dim.
Min
0.45
0.00
Max
Min
Max
1 2 3 4 5 6
TOP VIEW
A
A1
A3
b
0.50
0.55 0.018 0.020 0.022
0.05 0.000 0.001 0.002
0.005 REF
0.02
0.127 REF
0.20
0.10
C
0.15
2.40
1.90
1.25
0.30
0.25 0.006 0.008 0.010
2.60 0.094 0.098 0.102
2.10 0.075 0.079 0.083
1.45 0.049 0.053 0.057
0.50 0.012 0.016 0.020
0.016 BSC
D
2.50
0.08
C
D2
E
2.00
1.35
A1
A3
SIDE VIEW
E2
e
0.40
A
b
0.40 BSC
12X
K
0.20
0.15
0.008
M
0.10
C A B
e
L
0.25
0.35 0.006 0.010 0.014
3000 pieces
E2
Pin 1
1
2
3
4
5
6
7
# per
tape and
reel
Locator
C0.1
GND PAD
Controlling dimension: millimeters
12 11 10
9
8
K
D2
✝
This package is compliant with JEDEC standard MO-229C with the
L
exception of the "D", "D2", "E", "E2", "K" and "L" dimensions as
called out in the table above.
BOTTOM VIEW
Recommend PCB Land Pattern
Dimensions for 12-Lead, 0.4mm pitch
UDFN package
0.40
0.30
1.40
Note: Dimensions in millimeters. Drawing not to scale.
© 2006 California Micro Devices Corp. All rights reserved.
09/20/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.cmd.com
15
CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
