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RO3075A - 6/29/11

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical

Maximum

Units

Center Frequency, +25 °C

Absolute Frequency

2,3,4,5

344.930

345.07

MHz

Tolerance from 345.0 MHz

±70

kHz

Insertion Loss

IL

2,5,6

1.3

1.7

dB

Quality Factor

Unloaded Q

5,6,7

8000

50

Ω Loaded Q

1000

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

≤10

ppm/yr

DC Insulation Resistance between Any Two Terminals

5

1.0

M

Ω

RF Equivalent RLC Model

Motional Resistance

5, 7, 9

14.1

Ω

Motional Inductance

57.7

µH

Motional Capacitance

4.11

fF

Shunt Static Capacitance

5, 6, 9

4.2

pF

Test Fixture Shunt Inductance

2, 7

49.8

nH

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

664 // YWWS

• Designed for 345.0 MHz Transmitters

• Very Low Series Resistance

• Quartz Stability

• Surface-mount Ceramic Case

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

The RO3075A 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

operating at 345 MHz. This SAW is designed specifically for remote control and wireless security transmitters.

Absolute Maximum Ratings

Rating

Value

Units

CW RF Power Dissipation (See: Typical Test Circuit)

+0

dBm

DC Voltage Between Terminals (Observe ESD Precautions)

±30

VDC

Case Temperature

-40 to +85

°C

Soldering Temperature (10 seconds / 5 cycles maximum)

260

°C

345.0 MHz

SAW

Resonator

RO3075A

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

1.

less. Aging may exceed the specification for prolonged temperatures

above +65 °C. Typically, aging is greatest the first year after manufacture,

decreasing in subsequent 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

government approval, which is the responsibility of the equipment

manufacturer.

5.

6.

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

subject to change without notice.

7.

Derived mathematically from one or more of the following directly

8.

9.

This equivalent RLC model approximates resonator performance near the

is the static (nonmotional) capacitance between the two terminals

measured at low frequency (10 MHz) with a capacitance meter. The

measurement includes parasitic capacitance with "NC” pads unconnected.

Case parasitic capacitance is approximately 0.05 pF. Transducer parallel

10.

Tape and Reel standard per ANSI / EIA 481.

SM5035-4

Pb