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RF Monolithics, Inc.

Phone: (972) 233-2903

Fax: (972) 387-8148

E-mail: info@rfm.com

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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.

RO2104D-072804

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Frequency (+25 °C)

Nominal Frequency

2, 3, 4, 5

303.725

303.925

MHz

Tolerance from 303.825 MHz

∆f

C

±100

kHz

Insertion Loss

IL

2, 5, 6

1.5

2.0

dB

Quality Factor

Unloaded Q

5, 6, 7

10,000

50

Ω Loaded Q

1700

Temperature Stability

Turnover Temperature

6, 7, 8

10

25

40

°C

Turnover Frequency

Frequency Temperature Coefficient

FTC

0.032

Frequency Aging

Absolute Value during the First Year

1, 6

10

ppm/yr

DC Insulation Resistance between Any Two Terminals

5

1.0

M

Ω

RF Equivalent RLC Model

Motional Resistance

5, 6, 7,

9,

20

Ω

Motional Inductance

105

µH

Motional Capacitance

2.6

fF

Transducer Static Capacitance

5, 6, 9

3.1

pF

Test Fixture Shunt Inductance

2, 7

90

nH

Lid Symbolization

486

Standard Reel Quantity

Reel Size 7 Inch

10

500 Pieces/Reel

Reel Size 13 Inch

3000 Pieces/Reel

•

Ideal for 303.825 MHz Transmitters

•

Very Low Series Resistance

•

Quartz Stability

•

•

Complies with Directive 2002/95/EC (RoHS)

The RO2104D is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount, ceramic case.

It provides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters operat-

ing at 303.825 MHz. This SAW is designed specifically for AM transmitters in wireless security and remote

control applications operating in the USA under FCC Part 15, in Australia, in Japan, and in Korea.

Absolute Maximum Ratings

Rating

Value

Units

CW RF Power Dissipation (See Typical Test Circuit)

+5

dBm

DC Voltage Between Terminals (Observe ESD Precautions)

±30

VDC

Case Temperature

-40 to +85

°C

Soldering Temperature (10 seconds / 5 cycles max.)

260

°C

303.825 MHz

SAW

Resonator

RO2104D

1.

Aging may exceed the specification for prolonged temperatures above +65°C.

Typically, aging is greatest the first year after manufacture, decreasing in subse-

quent years.

2.

3.

One or more of the following United States patents apply: 4,454,488 and

4,616,197.

4.

Typically, equipment utilizing this device requires emissions testing and govern-

ment approval, which is the responsibility of the equipment manufacturer.

5.

6.

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

to change.

7.

Derived mathematically from one or more of the following directly measured

8.

9.

This equivalent RLC model approximates resonator performance near the reso-

static (nonmotional) capacitance between the two terminals measured at low

frequency (10 MHz) with a capacitance meter. The measurement includes para-

sitic capacitance with "NC” pads unconnected. Case parasitic capacitance is

approximately 0.05 pF. Transducer parallel capacitance can by calculated as:

10.

Tape and Reel Standard Per ANSI / EIA 481.

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

SM3838-6 Case

3.8 X 3.8

Pb