Preliminary
SF2139D
• Low Insertion Loss
• 3.8 X 3.8 X 1.0 mm Surface Mount Case
• Complies with Directive 2002/95/EC (RoHS)
177.0 MHz
SAW Filter
Pb
Absolute Maximum Ratings
Rating
Value
+10
Units
dBm
VDC
°C
Maximum Incident Power in Passband
Maximum DC Voltage Between any Two Terminals
Storage Temperature Range in Tape and Reel
Suitable for Lead-free Soldering - Maximum Soldering Profile
30
-40 to +85
260 °C for 30 s
SM3838-6
Electrical Characteristics
Characteristic
Sym
Notes
Min
Typ
177
50
Max
Units
f
Center Frequency
1
MHz
Ω
C
Source Impedance, Single Ended
Load Impedance, Single Ended
1 dB Bandwidth
50
Ω
BW
20
23.8
40
MHz
MHz
1
40 dB Bandwidth
BW
60
40
Template on the Amplitude,
Reference is Minimum IL
Maximum Insertion Loss
10 to 149 MHz
209 to 350 MHz
38
37
40
dB
dB
39
IL
7.0
1.1
15
9.0
1.5
80
MAX
dB
Amplitude Variation over 20 MHz Passband
Group Delay Variation over 20 MHz Passband
P-P
ns
P-P
Absolute Group Delay at f
0.308
7
µs
dB
°C
C
Input/Output Return loss over 20 MHz Passband
Operating Temperature
5
-40
+85
Case Style
SM3838-6 3.8 x 3.8 mm Nominal Footprint
TBD, YWWS
Lid Symbolization (Y=year, WW=week, S=shift) dot=pin 1 indicator
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
1000 Pieces/Reel
3000 Pieces/Reel
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
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 Ω and measured with 50 Ω network analyzer.
2.
3.
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.
4.
5.
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.
6.
7.
www.RFM.com E-mail: info@rfm.com
©2009 by RF Monolithics, Inc.
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SF2139D - 7/9/09
RFM [ RF MONOLITHICS, INC ]
