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©2008 by RF Monolithics, Inc.

RF3404D - 3/21/08

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Center Frequency at 25°C

Absolute Frequency

1, 2, 3

433.92

MHz

Insertion Loss

1, 3

1.6

2.5

dB

1, 3

1.2

1.8

dB

3 dB Bandwidth

1, 3

500

600

800

kHz

Rejection Attenuation: (relative to ILmin)

10 - 414 MHz

1, 3

50

55

dB

414 - 424 MHz

45

50

424 - 431 MHz

30

34

431 - 432 MHz

18

22

432 - 433 MHz

12

17

434.92 - 442 MHz

11

14

442 - 550 MHz

35

38

550 - 1000 MHz

50

55

Temperature

Freq. Temp. Coefficient

FTC

0.032

ppm/

Frequency Aging

Absolute Value during the First Year

|fA|

5

≤10

ppm/yr

Impedance @ fc

1

2853

Ω // 1.66pf

2411

Ω // 1.73pf

Lid Symbolization (Y=year WW=week S=shift)

539 // YWWS

Standard Reel Quantity

Reel Size 7 Inch

9

500 Pieces/Reel

Reel Size 13 Inch

3000 Pieces/Reel

• Ideal Front-End Filter for European Wireless Receivers

• Low-Loss, Coupled-Resonator Quartz Design

• Simple External Impedance Matching

The RF3404D is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide

front-end selectivity in 433.92 MHz receivers. Receiver designs using this filter include superhet with

10.7 MHz or 500 kHz IF, direct conversion and superregen. Typical applications of these receivers are

wireless remote-control and security devices operating in Europe under ETSI I-ETS 300 220.

This coupled-resonator filter (CRF) uses selective null placement to provide suppression, typically greater

than 40 dB, of the LO and image spurious responses of superhet receivers with 10.7 MHz IF. RFM’s advanced

SAW design and fabrication technology is utilized to achieve high performance and very low loss with simple

external impedance matching.

433.92 MHz

SAW Filter

RF3404D

SM3838-8 Case

3.8 x 3.8

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

1.

Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50

Ω test system with

VSWR

≤ 1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, f

width and passband shape are dependent on the impedance matching component values and quality.

2.

3.

Where noted specifications apply over the entire specified operating temperature range of -40°C to +90°C.

4.

5.

Frequency aging is the change in fc with time and is specified at +65°C or less. Aging may exceed the specification for prolonged temperatures

above +65°C. Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years.

6.

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

7.

One or more of the following U.S. Patents apply: 4,54,488, 4,616,197, and others pending.

8.

All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale.

9.

Tape and Reel Standard Per ANSI / EIA 481.

10. This product complies with Directive 2002/95/EC of the European Parlament and of the Council of 27 January 2003 on the restriction of the use of

certain hazadous substances in electrical and electronic equipment.

Pb