RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
E-mail: info@rfm.com
Page 1 of 4
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
http://www.rfm.com
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
SF2008D-121604
Electrical Characteristics
Characteristic
Sym
Notes
Min
Typ
Max
Units
Nominal 1 dB Center Frequency
f
C
1
930.5
MHz
Passband
Insertion Loss across 928.5 to 932.5 MHz
IL
4.5
dB
Amplitude Variation over fc 2 MHz
1, 2
2.0
dB
P-P
Rejection
400 to 880 MHz
1, 2, 3
35
dB
884.8 to 890.2 MHZ
40
906.8 to 911.2 MHZ
30
980 to 1300 MHZ
35
Operating Temperature Range
T
A
1
-20
+70
C
Impedance at Fc
Input
50 - j57 ohm
Output
50 - j57 ohm
Case Style
SM3838-6 3.8 x 3.8 mm Nominal Footprint
Lid Symbolization (Y=year, WW=week, S=shift) dot=pin 1 indicator
455, YWWS
Standard Reel Quantity Reel Size 7 Inch
1000 Pieces/Reel
Reel Size 13 Inch
3000 Pieces/Reel
SM3838-6
RF Filter for Pager Applications
High Rejection Out of Band
Complies with Directive 2002/95/EC (RoHS)
Absolute Maximum Ratings
Rating
Value
Units
Maximum Incident Power in Passband
+0
dBm
Max. DC voltage between any 2 Terminals
30
VDC
Storage Temperature Range
-40 to +85
C
Suitable for lead-free soldering - Max. Soldering Profile
260C for 30 s
930.5 MHz
SAW Filter
SF2008D
Connection
Terminals
Port 1
2
Port 2
5
Case Ground
All others
Electrical Connections
Notes:
1.
Unless noted otherwise, all specifications apply over the operating
temperature range with filter soldered to the specified demonstration
board with impedance matching to 50
and measured with 50
net-
work analyzer.
2.
Unless noted otherwise, all frequency specifications are referenced to
the nominal center frequency, fc.
3.
Rejection is measured as attenuation below the minimum IL point in
the passband. Rejection in final user application is dependent on
PCB layout and external impedance matching design. See Applica-
tion Note No. 42 for details.
4.
"LRIP" or "L" after the part number indicates "low rate initial produc-
tion" and "ENG" or "E" indicates "engineering prototypes."
5.
The design, manufacturing process, and specifications of this filter
are subject to change.
6.
Either Port 1 or Port 2 may be used for either input or output in the
design. However, impedances and impedance matching may vary
between Port 1 and Port 2, so that the filter must always be installed
in one direction per the circuit design.
7.
US and international patents may apply.
8.
RFM, stylized RFM logo, and RF Monolithics, Inc. are registered
trademarks of RF Monolithics, Inc.
9.
Copyright 1999, RF Monolithics Inc.
10. Electrostatic Sensitive Device. Observe precautions for handling.
Pb
930.5 MHz SAW Filter
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
E-mail: info@rfm.com
Page 4 of 4
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
http://www.rfm.com
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
SF2008D-121604
6-Terminal Ceramic Surface-Mount Case
3.8 X 3.8 mm Nominal Footprint
Case Dimensions
Dimension
mm
Inches
Min
Nom
Max
Min
Nom
Max
A
3.60
3.80
4.0
0.14
0.15
0.16
B
3.60
3.80
4.0
0.14
0.15
0.16
C
1.30
1.50
1.70
0.05
0.06
0.067
D
0.95
1.10
1.25
0.037
0.043
0.05
E
2.39
2.54
2.69
0.090
0.10
0.110
G
0.90
1.0
1.10
0.035
0.04
0.043
H
1.90
2.0
2.10
0.75
0.08
0.83
I
0.50
0.6
0.70
0.020
0.024
0.028
J
1.70
1.8
1.90
0.067
0.07
0.075
SM3838-6 Case
TOP VIEW BOTTOM VIEW
0.055 TYP.
(1.40)
0.036
(0.91)
0.029 TYP.
(0.74)
0.066
(1.68)
0.050 TYP.
(1.27)
0.176 REF.
(4.47)
0.129 REF.
(3.28)
PCB Footprint
1
2
3
6
5
4
1
2
3
6
5
4
A
B
C
D
J
E
G
H
I
Materials
Solder Pad
Termination
Au plating 30 - 60 inches (76.2-152 m) over 80-200
inches (203-508 m) Ni.
Lid
Fe-Ni-Co Alloy Electroless Nickel Plate (8-11% Phos-
phorus) 100-200 inches Thick
Body
Al
2
O
3
Ceramic
Pb Free
Electrical Connections
Connection
Terminals
Port 1
Single Ended Input
2
Port 2
Single Ended Output
5
Ground
All others
Single Ended Operation Only
Dot indicates Pin 1
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