SF2145B - MURATA MANUFACTURING

SF2145B (R) 2/20/15 Page 1 of 5 www.murata.com

Electrical Characteristics

Characteristic Sym Notes Min Typ Max Units

Center Frequency fC1 895 MHz

Source Impedance, single ended 50 Ω

Load Impedance, single ended 50 Ω

1 dB Bandwidth 18 MHz

Insertion Loss, 894 to 895.5 MHz IL 8.5 9.0 dB

Insertion Loss Variation: Any point within 894 to 895.5 MHz

measured at a constant temperature with the

RF input level varying from +10 to +20 dBm

0.3 ΔdB

Amplitude Ripple, 894 to 895.5 MHz .35 .75 dB

Average Group Delay, 894 to 895.5 MHz 804 814 824 ns

Group Delay Variation, 894.0 to 895.5 MHz 10 25 nsP-P

Input / Output Return Loss at fC10 15 dB

Temperature Coefficient -18 ppm/K

Case Style SMP-03 7.0 x 5.0 mm Nominal Footprint

Lid Symbolization (YY=year, WW=week) See note 4 RFM SF2145B YYWW

SMP-03

895 MHz

SAW Filter

SF2145B

1. Unless noted otherwise, all specifications apply over the operating tem-

perature range with filter soldered to the specified demonstration board

with impedance matching to 50 Ω and measured with 50 Ω network ana-

lyzer.

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 Application Note No. 42 for

details.

4. "LRIP" or "L" after the part number indicates "low rate initial production"

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. Murata, stylized Murata logo, and Murata N.A., Inc. are registered

trademarks of Murata Manufacturing Co., Ltd.

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

NOTES:

• SAW Filter, 895 MHz, 15 MHz BW

• 7.0 X 5.0 mm 10 pin Surface-Mount Case

• Complies with Directive 2002/95/EC (RoHS)

Absolute Maximum Ratings

Rating Value Units

Maximum Incident Power in Passband +20 dBm

Maximum DC Voltage Between any Two Terminals 0 VDC

Operating Temperature Range -20 to +70 °C

Pb

SF2145B (R) 2/20/15 Page 2 of 5 www.murata.com

Tesing Environment

CH1 S11 1 U FS

CENTR 899 . 700 MHz SPAN 50 . 000 MHz

Cor

PRm

CH2 S21 LOG 1 dB/ REF -10 dB

CENTER 899 . 700 000 MHz SPAN 50 . 000 000 MHz

Cor

PRm

CH3 S22 1 U FS

CENTR 899 . 700 MHz SPAN 50 . 000 MHz

Cor

18 Feb 2008 13:27:10

1

1: 60 . 025 -1 . 6348 108 . 21 pF

899 . 700 000 MHz

1

2

3 4

1 : 0 . 0000 dB 0 . 000 000 MHz

Max REF=1

CH2 Markers

BW : 26 . 232706 MHz

cent : 900 . 034584 MHz

Q: 34 . 310

1_ loss : -7 . 7333 dB

1

1: 55 . 941 -5 . 0742 34 . 862 pF

899 . 700 000 MHz

SF2145B DEMO

DEVICE # 49

Full

38

Note: Unmatched Filter to 50Ω Input / Output.

SF2145B (R) 2/20/15 Page 3 of 5 www.murata.com

CH1 S21 DEL 100 ns/ REF 800 ns

Cor

Smo

PRm

CH2 S21 LOG 1 dB/ REF -10 dB

CH2 CENTER 899 . 700 000 MHz SPAN 50 . 000 000 MHz

Cor

PRm

18 Feb 2008 13:26:55

1

2

2 : 667 . 57 ps 1 . 500 000 MHz

REF=1

CH1 Markers

mean : 812 . 88 ns

s . dev : 1 . 2799 ns

p-p : 4 . 4631 ns

1

2

2 : . 11980 dB 1 . 500 000 MHz

REF=1

CH2 Markers

mean : -8 . 0196 dB

s . dev : . 06000 dB

p-p : . 24780 dB

SF2145B DEMO

DEVICE # 49

Resp

SF2145B (R) 2/20/15 Page 4 of 5 www.murata.com

Tape and Reel Specifications

“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 5.5 mm

Bo 7.5 mm

Ko 2.0 mm

Pitch 8.0 mm

W16.0 mm

PIN #1

See Detail "A"

13.0

20.2

2.0

12.0

100 REF.

"B" REF.

16.0

SF2145B (R) 2/20/15 Page 5 of 5 www.murata.com

SMP-03 Case

Recommended PCB Footprint

Case Dimensions

Dimension mm Inches

Min Nom Max Min Nom Max

A6.80 7.00 7.20 0.268 0.276 0.283

B4.80 5.00 5.20 0.189 0.197 0.205

C1.65 2.00 0.065 0.079

D.47 0.60 .73 0.019 0.024 0.029

E2.41 2.54 2.67 0.095 0.100 0.105

H0.87 1.0 1.13 0.034 0.039 0.044

J4.87 5.00 5.13 0.192 0.197 0.202

K2.87 3.00 3.13 0.113 0.118 0.123

P1.14 1.27 1.40 0.045 0.050 0.055

Electrical Connections

Connection Terminals

Input (Port 1) 3

Output (Port 2) 8

Case Ground 2, 4, 7, 9

To Be Grounded 1, 2, 4, 5, 6, 7, 9, 10

Materials

Solder Pad

Plating

0.3 to 1.0 µm Gold over 1.27 to 8.89 µm Nickel

Lid Plating 2.0 to 3.0 µm Nickel

Body Al2O3 Ceramic

Pb Free

A

B

C

HE

P

D

H

J

K

10-Terminal Ceramic Surface-Mount Case

7 x 5 mm Nominal Footprint