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.

A subsidiary of

TT electronics plc

• 4222 South Staples Street • Corpus Christi Texas 78411 USA

© IRC Advanced Film Division

Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com

PAT-W Series Issue June 2008 Sheet 1 of 2

High Frequency

Surface Mount Attenuators

The PAT-W series high performance chip attenuator provides

excellent high frequency performance at power ratings up to 500mW.

The wrap-around construction provides reliable low cost, surface mount

assembly. Long term operational stability is achieved from the thin film construction. Typical uses include

applications in medical, industrial, and communications.

Test Condition

Attenuation

Impedance

0 to 10dB

16, 20dB

Short Time Over Load

2.5 x Rated Voltage, 5 sec

±0.01dB

±0.02dB

±0.2%

Load Life

1000 Hours, 70°C

±0.02dB

±0.04dB

±0.5%

Moisture Resistance

1000 hours, 60°C, 95% RH

±0.02dB

±0.04dB

±0.5%

Temperature Cycle

5 Cycles, 125°C High, -55°C Low

±0.01dB

±0.02dB

±0.2%

Resistance to Solder Heat

260°C, 10 sec.

±0.01dB

±0.02dB

±0.2%

Solderability

235°C, 3 sec

>95% coverage

Insulation Resistance

500V, 1 minute

>1000MΩ

PAT3042

PAT4556

Power Rating @ 70°C

250mW

500mW

Impedance

50Ω

TCR

±50ppm/°C

Attenuation (dB)

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,

16, 20

VSWR

DC to 2GHz = 1.1

2GHz to 5GHz = 1.2

5GHz to 10GHz = 1.3

Operating Temperature

Range

-55°C to +125°C

Terminations

100% Sn

Electrical Data

Attenuation

Value

Attenuation

Tolerance

Code

DC to

2GHz

2GHz to

5GHz

5GHz to

10GHz

0dB

A

+0.1/

-0dB

+0.2/

-0dB

+0.4/

-0dB

0 to 10dB

A

±0.1dB

±0.2dB

±0.4dB

B

±0.2dB

±0.3dB

±0.5dB

16, 20dB

B

±0.2dB

±0.3dB

±0.5dB

Attenuation Tolerance Data

Environmental Data

PAT-W

IRC Advanced Film Division