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©2009-2010 by RF Monolithics, Inc.

SF2146D - 5/12/10

SM3838-8

• 3.8 X 3.8 X 1.0 mm Surface Mount Case

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

Absolute Maximum Ratings

Rating

Value

Units

Maximum Incident Power in Passband

+15

dBm

Maximum DC Voltage on any Non-ground Terminal

TBD

VDC

Storage Temperature Range in Tape and Reel

-45 to +85

°C

Suitable for Lead-free Soldering - Maximum Soldering Profile

260 °C for 30 s

415.0 MHz

SAW Filter

SF2146D

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.

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.

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.

6.

US and international patents may apply.

7.

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

Pb

Electrical Characteristics

Characteristic

Sym

Notes

Min

Typ

Max

Units

Center Frequency

1

415

MHz

3 dB Bandwidth

25

32

MHz

Maximum Insertion loss at 415 MHz

4.0

4.5

dB

Amplitude Ripple, 403 to 427 MHz

1.5

2.0

Attenuation:

90 to 290 MHz

41

50

dB

290 to 328 MHz

32

40

328 to 350 MHz

42

50

350 to 375 MHz

30

40

375 to 390 MHz

17

20

445 to 475 MHz

13

20

475 to 485 MHz

35

40

485 to 900 MHz

30

36

Input/Output Impedance

50 / 100

Ω

Operating Temperature

-30

+85

°C

Case Style

SM3838-8 3.8 x 3.8 mm Nominal Footprint

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

777, YWWS

Standard Reel Quantity

Reel Size 7 Inch

500 Pieces/Reel

Reel Size 13 Inch

3000 Pieces/Reel

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes: