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251.045 MHz
SAW Filter
SM3838-8 Case
8-Terminal Ceramic Surface-Mount Case
3.8 X 3.8 mm Nominal Footprint
Case Dimensions
Dimension
A
B
C
D
E
F
G
Min
3.6
3.6
0.95
0.60
0.90
0.50
2.39
mm
Nom
3.8
3.8
1.10
0.85
1.00
0.60
2.54
Max
4.0
4.0
1.25
1.00
1.10
0.70
2.69
Min
0.142
0.142
0.037
0.023
0.035
0.020
0.090
Inches
Nom
0.150
0.150
0.043
0.033
0.040
0.024
0.100
Max
0.157
0.157
0.049
0.039
0.043
0.028
0.110
0.066
H
1.35
1.5
1.65
0.053
0.059
0.065
(1.68)
Electrical Connections
Connection
Terminals
Port 1
Port 2
Differential Input
Differential Output
1, 2
5, 6
Single Ended Operation
Differential Operation
Dot Indicates Pin 1
Ground
Materials
All Others
Return is Ground
Return is Hot
0.055 TYP.
(1.40)
PCB Footprint
TOP VIEW
B
8
Solder Pad
Termination
Lid
Body
Pb Free
C
Au plating 30 - 60 uInches (76.2-152 uM) over 80-200
uInches (203-508 uM) Ni.
Fe-Ni-Co Alloy Electroless Nickel Plate (8-11% Phos-
phorus) 100-200 uInches Thick
Al 2 O 3 Ceramic
BOTTOM VIEW
E
8
1
7
H 7
1
A
2
3
6
5
6
5
2
3
G
4
D
4
F
RF Monolithics, Inc.
RFM Europe
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-8148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
Page 4 of 5
?1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
SF2079D-060607
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