General Note

IRC reserves the right to make changes in product specification without notice or liability.

All information is subject to IRC’s own data and is considered accurate at time of going to print.

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RFAXX Series Issue February 2009 Sheet 1 of 4

RFAXX Series

High Frequency

Surface Mount Attenuators

RFA53SDLF

RFA54DDLF

RFA55SDLF

RFA55DDLF

Frequency Range

DC to 4GHz

DC to 4GHz

DC to 4GHz

DC to 4GHz

Power Rating @ 70°C

0.25W

0.25W

0.25W

0.25W

Attenuation

±0.2 dB

1, 2, 3, 4, 5, 6dB

±0.3 dB

7, 8, 9, 10dB

±0.4 dB

20, 30, 40dB

Impedance

50Ω ±2%

Absolute TCR

±50ppm/°C

Electrical Data

RFA84SDLF

RFA84DDLF

RFA37DDLF

Frequency Range

DC to 1GHz

DC to 1GHz

DC to 1GHz

Power Rating @ 70°C

0.50W

0.50W

1.0W

Attenuation

±0.2 dB

1, 2, 3, 4, 5, 6dB

±0.3 dB

7, 8, 9, 10dB

±0.4 dB

20, 30, 40dB

Impedance

50Ω ±2%

Absolute TCR

±50ppm/°C

The RFAXX series of 50

Ω high frequency attenuators are available

in a variety of sizes and termination styles to suit applications for mounting

on heat sinks or normal PC board materials. High thermal conductivity aluminum nitride substrates provide the

low resistance thermal path for high power dissipation applications. Frequency performance up to 4GHz assures

proper operation in RF and microwave power amplifiers, RF transmitters and receivers and RF power sources.