High Frequency
Surface Mount Attenuators
PAT-W
•
10GHz operation
•
±50ppm/°C absolute TCR
•
50 impedance available in 2 chip sizes available
•
Wrap-around 90/10 Sn/Pb or 100% Sn terminations
IRC Advanced Film Division
The PAT-W series high performance chip attenuator provides excel-
lent high frequency performance at power ratings up to 250mW. 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
Impedance
TCR
Attenuation (dB)
Power Rating @ 70°C
VSWR
Operating Temperature
Range
Terminations
50
±50ppm/°C
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
16, 20
250mW
500mW
PAT4556
Attenuation Tolerance Data
Attenuation
Value
Attenuation
Tolerance
Code
A
A
1 to 10dB
B
16, 20dB
-55°C to +125°C
90/10 Sn/Pb
or
100% Sn
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
0dB
DC to 2GHz = 1.1
2GHz to 5GHz = 1.2
5GHz to 10GHz = 1.3
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
>1000M
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.
42
A subsidiary of
TT electronics plc
PAT-W Series Issue October 2006 Sheet 1 of 3
© IRC Advanced Film Division
• Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Email: afdsales@irctt.com • Website: www.irctt.com
High Frequency
Surface Mount Attenuators
Physical Data
PAT3042
IRC Advanced Film Division
Dimensions (mm)
L
W1
L2
W2
4
W1
L1
L2
L1
W2
3
0.85 ±0.10
0.65 ±0.1
4.20 ±0.20
3.02 ±0.20
0.80 ±0.15
L
1
2
W
t
3
W
6
5
L1
W1
t
0dB
4.20 ±0.20
---
0.30 ±0.15
1dB
2 to 3dB
4 to 6dB
7 to 10dB
16, 20dB
0.30 ±0.20
1.90 ±0.20
0.60 ±0.20 0.90 ±0.20 1.80 ±0.20
1.75 ±0.20
0.40 ±0.15
1.60 ±0.20
Bottom
View
PAT4556
Dimensions (mm)
L
W1
t
0dB
1to10dB, 16dB, 20dB
0.40 ±0.15
1.3 ±0.1
0.60 ±0.10
5.60 ±0.20
4.50 ±0.20
0.80 ±0.15
01
W2
W1
W
6
5
W1
W2
W3
L
0.06 ±0.10
0.64 ±0.10
3
4
W3
Bottom
View
1
2
W3
W
t
1, 2: Input and output terminals 3: Electrode (surface soldering and lead-free possible) 4: Covering resin 5: Alumina substrate 6: Thin film resistor
Power Derating Curve
% of Rated Power
100
Ordering Data
Prefix
Model
PAT3042W = Surface Mount Attenuator with
90/10 Sn/Pb terminations
PAT3042WLF = Surface Mount Attenuator with
100% Sn Terminations
PAT4546W = Surface Mount Attenuator with
90/10 terminations
PAT4546WLF = Surface Mount Attenuator with
100% Sn Terminations
HFR - PAT3042W - 50R0 - 3
A
60
Impedance
50R0 = 50
0
25°
70°
125°
Attenuation
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 16, 20dB
Ambient Temperature (°C)
Attenuation Tolerance
A, B
© IRC Advanced Film Division
• Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Email: afdsales@irctt.com • Website: www.irctt.com
43
PAT-W Series Issue October 2006 Sheet 2 of 2