High Frequency
Surface Mount Attenuators
PAT-W
•
RoHS Compliant
•
10GHz operation
•
±50ppm/°C absolute TCR
•
Wrap Around 100% Sn Terminations
•
50Ω impedance available in 2 chip sizes available
IRC Advanced Film Division
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.
Electrical Data
PAT3042
Power Rating @ 70°C
Impedance
TCR
Attenuation (dB)
VSWR
Operating Temperature
Range
Terminations
250mW
50Ω
±50ppm/°C
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
16, 20
DC to 2GHz = 1.1
2GHz to 5GHz = 1.2
5GHz to 10GHz = 1.3
-55°C to +125°C
100% Sn
PAT4556
500mW
Attenuation Tolerance Data
Attenuation
Value
0dB
Attenuation
Tolerance
Code
A
A
0 to 10dB
B
16, 20dB
B
±0.2dB
±0.2dB
±0.3dB
±0.3dB
±0.5dB
±0.5dB
DC to
2GHz
+0.1/
-0dB
±0.1dB
2GHz to
5GHz
+0.2/
-0dB
±0.2dB
5GHz to
10GHz
+0.4/
-0dB
±0.4dB
Environmental Data
Test Condition
Short Time Over Load
Load Life
Moisture Resistance
Temperature Cycle
Resistance to Solder Heat
Solderability
Insulation Resistance
2.5 x Rated Voltage, 5 sec
1000 Hours, 70°C
1000 hours, 60°C, 95% RH
5 Cycles, 125°C High, -55°C Low
260°C, 10 sec.
235°C, 3 sec
500V, 1 minute
Attenuation
0 to 10dB
±0.01dB
±0.02dB
±0.02dB
±0.01dB
±0.01dB
16, 20dB
±0.02dB
±0.04dB
±0.04dB
±0.02dB
±0.02dB
>95% coverage
>1000MΩ
Impedance
±0.2%
±0.5%
±0.5%
±0.2%
±0.2%
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.
© IRC Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
A subsidiary of
TT electronics plc
PAT-W Series Issue June 2008 Sheet 1 of 2
High Frequency
Surface Mount Attenuators
Physical Data
PAT3042
IRC Advanced Film Division
Dimensions (mm)
W2
L
3
0.9 ± 0.10
4.20 ± 0.20
3.02 ± 0.20
0.80 ± 0.15
L
t
W
t
5
3
W2
1
2
W
3
2
6
3
Bottom
View
1
3
3
PAT4556
3
L
t
Dimensions (mm)
W2
1.39 ± 0.1
5.6 ± 0.2
4.5 ± 0.2
0.80 ± 0.15
01
W2
1
2
W
6
5
L
W
t
3
3
3
4
Bottom
View
1
2
3
3
1, 2: Input and output terminals 3: Ground Terminal 4: Overcoat 5: Alumina substrate 6: Thin film resistor
Power Derating Curve
100
Ordering Data
Prefix
Model
HFR - PAT3042WLF - 50R0 - 3
A
PAT3042WLF = Surface Mount Attenuator with
100% Sn Terminations
PAT4556WLF = Surface Mount Attenuator with
100% Sn Terminations
% Of Rated Power
60
Impedance
50R0 = 50Ω
Attenuation
0
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 16, 20dB
Attenuation Tolerance
25
70
125
A, B
Ambient Temperature (°C)
© IRC Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
PAT-W Series Issue June 2008 Sheet 2 of 2
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