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© 2009-2012 by RF Monolithics, Inc.

SF2137D - 2/17/12

Electrical Characteristics

Electrical Connections

Characteristic

Sym

Notes

Min

Typ

Max

Units

Center Frequency

869.00

MHz

Insertion Loss, 868 to 870 MHz

IL

2.9

4.0

dB

Amplitude Ripple, p-p, 868 to 870 MHz

0.2

1.5

Attenuation Relative to 0 dB:

825 to 828 MHz

40

47

835 to 842 MHz

30

38

891 to 894 MHz

30

43

910 to 913 MHz

40

48

Source Impedance

50



Load Impedance

50



Case Style

SM3838-6

Lid Symbolization, Y=year, WW=week, S=shift, dot=pin 1 indicator

785

, YWWS

Standard Reel Quantity

Reel Size 7 Inch

5

00 Pieces/Reel

Reel Size 13 Inch

3000 Pieces/Reel

Connection

Terminals

Port 1

2

Port 2

5

Case Ground

All others

SM3838-6

• Steep Roll-off SAW Filter for 869.00 MHz Unlicensed band

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

• No Matching Required for Operation in 50

Absolute Maximum Ratings

Rating

Value

Units

Input Power Level

17

dBm

DC Voltage Between any Two Pins

3

V

Operating Temperature Range

-20 to +70

°C

Storage Temperature Range in Tape and Reel

-40 to +85

°C

869.00 MHz

SAW Filter

SF2137D

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

 and measured with 50  network analyzer.

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.

The design, manufacturing process, and specifications of this filter are subject to change.

5.

US and international patents may apply.

6.

RFM, stylized RFM logo, and RF Monolithics, Inc. are registered trademarks of RF Monolithics, Inc.

Pb

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes: