®

RF Monolithics, Inc.

Phone: (972) 233-2903

Fax: (972) 387-8148

E-mail: info@rfm.com

Page 1 of 2

RFM Europe

Phone: 44 1963 251383

Fax: 44 1963 251510

http://www.rfm.com

©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.

RF1302-062702

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Nominal Frequency

2, 4, 5, 6

439.250

MHz

Insertion Loss

IL

3, 4, 7

4.0

dB

4 dB Passband

2, 3, 4, 7

±30

kHz

3 dB Reject Band

2, 3, 4, 7

kHz

Rejection

4

10

dB

25

Temperature

Operating Case Temperature

3, 7, 8

-40

+85

°C

Turnover Temperature

15

25

40

°C

Turnover Frequency

MHz

Frequency Temperature Coefficient

FTC

0.032

Frequency Aging

Absolute Value during the First Year

IfAI

3

10

ppm/yr

External Impedance

Series Inductance

L

1, 7

22

nH

Shunt Capacitance

C

5-18

pF

Lid Symbolization (in addition to Lot and/or Date Codes)

RFM RF1302

TO39-3 Case

•

Ideal Front-End Filter for European Wireless Receivers

•

Low-Loss, Coupled-Resonator Quartz Design

•

Simple External Impedance Matching

•

Rugged TO39 Hermetic Package

•

Complies with Directive 2002/95/EC (RoHS)

The RF1302 is a low-loss, compact and economical surface-acoustic-wave (SAW) filter designed to provide

front-end selectivity in 439.250 MHz receivers. Typical applications of these FSK receivers are wireless

remote-control and security devices operating in Europe.

RFM’s advanced SAW design and fabrication technology is utilized to achieve high performance and very low

loss with simple external impedance matching (not included). Quartz construction provides excellent frequen-

cy stability over a wide temperature range.

439.250 MHz

SAW Filter

RF1302

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

1. Typical test circuit is shown for TO-39 RF filters.

3. All characteristics are specified over the operating temperature range and typical aging for 10 years.

4. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture. Note that insertion loss, bandwidth, and pass-

band shape are dependent on the impedance matching component values and quality. Demonstration circuits are available for confirmation of device

performance.

5. One or more of the following U.S. Patents apply: 4,454,488; 4,616,197; and other pending.

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

7. The design, manufacturing process, and specifications of this device are subject to change without notice.

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