Preliminary
SF1218D
•
•
•
•
Low Insertion Loss
3.8 X 3.8 X 1.0 mm Surface Mount Case
Single-ended Input and Output
Complies with Directive 2002/95/EC (RoHS)
Pb
Value
+27
3
-40 to +85
453.5 MHz
SAW Filter
Units
dBm
VDC
°C
260 °C for 30 s
Absolute Maximum Ratings
Rating
Maximum Input Power
Maximum DC Voltage Between any Two Terminals
Storage Temperature Range in Tape and Reel
Suitable for Lead-free Soldering - Maximum Soldering Profile
SM3838-6
Electrical Characteristics
Characteristic
Center Frequency
Source Impedance, Single Ended
Load Impedance, Single Ended
Attenuation Referenced to 0 dB
300 kHz to 350 MHz
350 MHz to 445 MHz
460 MHz to 462 MHz
462 MHz to 467 MHz
467 MHz to 2000 MHz
Maximum Insertion Loss, 450 to 455 MHz
Amplitude Variation, 450 to 457 MHz
Input Return Loss, 450 to 457 MHz
Output Return Loss, 450 to 457 MHz
Operating Temperature
Case Style
Lid Symbolization (Y=year, WW=week, S=shift) dot=pin 1 indicator
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
9
9
-40
IL
MAX
30
25
6
25
25
33
30
20
35
33
1.7
0.9
11
11
+85
3.0
1.5
dB
dB
dB
dB
°C
dB
Sym
f
C
Notes
1
Min
Typ
453.5
50
50
Max
Units
MHz
SM3838-6 3.8 x 3.8 mm Nominal Footprint
TBD, YWWS
1000 Pieces/Reel
3000 Pieces/Reel
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
3.
4.
5.
6.
7.
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
network analyzer.
Unless noted otherwise, all frequency specifications are referenced to the nominal center frequency, fc.
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 Application Note No. 42 for details.
The design, manufacturing process, and specifications of this filter are subject to change.
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.
US and international patents may apply.
RFM, stylized RFM logo, and RF Monolithics, Inc. are registered trademarks of RF Monolithics, Inc.
www.RFM.com E-mail: info@rfm.com
©2010 by RF Monolithics, Inc.
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SF1218D - 4/19/10
RFM [ RF MONOLITHICS, INC ]
