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©2009 by RF Monolithics, Inc. SF1174B - 3/16/09
Electrical Characteristics
Characteristic Sym Notes Min Typ Max Units
Nominal Center Frequency fC1 374.000 MHz
Passband Insertion Loss at fc IL 8.7 10.0 dB
3 dB Passband BW31, 2 17 23 MHz
Amplitude Ripple over fc ±7.0 MHz 0.8 1.0 dBP-P
Group Delay Variation over fc ±7. 0 GDV 61 100 nsP-P
Rejection fc -100 to fc -33 MHz 1, 2, 3 45 54
dB
fc -33 to fc -22 MHz 40 53
fc -22 to fc -16.5 MHz 30 40
fc +16.5 to fc +22 MHz 30 44
fc +22 to fc +43 MH z 3 5 48
fc +43 to fc +100 MHz 40 49
Operating Temperature Range TA1-10 +85 °C
Differential Input / Output Impedance Match External L-C
Case Style SM5050-8 5 X 5 mm Nominal Footprint
Lid Symbolization (Y=year, WW=week , S=shift) 447, YWWS
SM5050-8
• Designed for WLAN IF Applications
• Low Insertion Loss
• 5.0 x 5.0 x 1.7 mm Suface-Mount Case
• Differential or Sing le Ended Input and Output
• Complies with Directive 2002/95/EC (RoHS)
Absolute Maximum Ratings
Rating Value Units
Maximum Incident Power in Passband +10 dBm
Maximum DC Voltage Between any Two Terminals 30 VDC
Storage Temperature Range -40 to +85 °C
Suitable for lead-free soldering - Maximum Soldering Profile 260°C for 30 s
374.00 MHz
SAW Filter
SF1174B
Electrical Connections
Connection Terminals
Port 1 Hot 2
Port 1 Gnd Return 3
Port 2 Hot 6
Port 2 Gnd Return 7
Case Ground All others
1. Unless not ed othe rwise, all spe cificat ion s appl y ove r the op era ting t emper-
ature range with filter soldered t o the specifi ed demonstration board with
impedance matching to 50 Ω and meas ured with 50 Ω netw or k an a l y ze r.
2. Unless noted otherwise, all frequency specifications are referenced to the
nominal center frequency, fc.
3. Rejection is measured as attenuatio n below the minimum IL po int in the
passband. Rejectio n in final user applic ation is dependent on PCB layout
and external impedance matching design. See Applic ation Note No. 42
for det ails.
4. "LRIP" or "L" after the p art number indi ca tes "low rate initial productio n"
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 us ed for ei ther input or output in the des ign.
However, impedances and impeda nce mat ching may vary betwe en Por t 1
and Port 2, so that the filter must always be installed in one direction per
the circ uit design.
7. US and international patents may apply.
8. RFM, stylized RFM logo , and RF Monolithics , Inc. are registered
trademar ks of RF Monolith ics, In c.
Pb
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
27nH 27nH
100
100
RF IC
SAW Filte r
RF IC
12pf
12pf
200
12pf
12pf
TOP VIEW
pin 2
pin 3
pin 7
pin 6
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©2009 by RF Monolithics, Inc. SF1174B - 3/16/09
Case Dimensions
Electrical Connections
Dimension mm Inches
Min Nom Max Min Nom Max
A4.8 5.0 5.2 0.1968
B4.8 5.0 5.2 0.1968
C1.7 0.0669
D2.08 0.0818
E1.17 0.046
F0.64 0.0252
G2.39 2.54 2.69 0.100
Connection Terminals
Port 1 Differential Input 2,3
Port 2 Differential Output 6,7
Ground All others
Single Ended Operation Return is ground
Differential Operation Return is hot
Dot indicates Pin 1
Materials
Solder Pad
Termination Au plating 30 - 60 uInches (76.2-152 uM) over 80-200
uInches (203-508 uM) Ni.
Lid Fe-Ni-Co Alloy Electroless Nickel Plate (8-11% Phospho-
rus) 100-200 uInches Thick
Body Al2O3 Ceramic
Pb Free
8-Terminal Ceramic Surface-Mount Case
5.0 X 5.0 mm Nominal Footprint
SM5050-8 Case
A
1
2
3
B
7
6
5
4
C
D7
6
5
4
E
F
G
1
2
3
88
TOP VIEW BOTTOM VIEW
447
YWWS
PCB FOOTPRINT
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©2009 by RF Monolithics, Inc. SF1174B - 3/16/09
Tape and Reel Specifica t ions
“B “
Nominal Size Quantity Per Reel
Inches millimeters
7 178 500
13 330 2000
USER DIRECTION OF FEED
COMPONENT ORIENTATION and DIMENSIONS
Carrier Tape Dimensions
Ao 5.3 mm
Bo 5.3 mm
Ko 2.0 mm
Pitch 8.0 mm
W 12.0 mm
PIN #1
See Detail " A"
13.0
20.2
2.0
12.0
100 REF.
"B" REF.
447
YWWS
