Preliminary
SF2139D
• Low Insertion Loss
• 3.8 X 3.8 X 1.0 mm Surface Mount Case
• Complies with Directive 2002/95/EC (RoHS)
Pb
Absolute Maximum Ratings
Rating
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
177.0 MHz
SAW Filter
Value
+10
30
-40 to +85
Units
dBm
VDC
°C
260 °C for 30 s
SM3838-6
Electrical Characteristics
Characteristic
Center Frequency
Source Impedance, Single Ended
Load Impedance, Single Ended
1 dB Bandwidth
40 dB Bandwidth
Template on the Amplitude,
Reference is Minimum IL
Maximum Insertion Loss
Amplitude Variation over 20 MHz Passband
Group Delay Variation over 20 MHz Passband
Absolute Group Delay at f
C
Input/Output Return loss over 20 MHz Passband
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
5
-40
10 to 149 MHz
209 to 350 MHz
IL
MAX
BW
1
BW
40
38
37
20
Sym
f
C
Notes
1
Min
Typ
177
50
50
23.8
40
40
39
7.0
1.1
15
0.308
7
Max
Units
MHz
Ω
Ω
MHz
60
MHz
dB
9.0
1.5
80
dB
dB
P-P
ns
P-P
µs
dB
+85
°C
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
Ω
and measured with 50
Ω
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
©2009 by RF Monolithics, Inc.
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SF2139D - 7/9/09
RFM [ RF MONOLITHICS, INC ]
