IRC Advanced Film Division
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
• Corpus Christi Texas 78411 USA
© IRC Advanced Film Division
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Email: afdsales@irctt.com • Website: www.irctt.com Series Issue October 2006
High Frequency
Surface Mount Attenuators
PAT Series
• Frequency operation to 10 GHz
• Industry standard 0805, 1206, 1612 chip sizes
• Low parasitic capacitance and inductance
• Thin film stability over time and temperature
Electrical Data
PAT1220 PAT1632 PAT3042SC PAT3042SD
Impedance 50W50W50W75W
Frequency Range DC to 10 GHz DC to 3GHz DC to 3GHz DC to 2GHz
VSWR 1.3 1.3 1.2 1.3
Attenuation 0, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10dB
0, 1, 2, 3, 4, 5,
6, 7, 8, 9, 10, 16dB
0, 1, 2, 3, 4, 5,
6, 7, 8, 9, 10, 16, 20dB
Attenuation Tolerance ±0.3dB 0 to 10dB: ±0.3dB
16dB: ±0.5dB
0 to 10dB: ±0.3dB
16, 20dB: ±0.5dB
TCR ±50ppm/°C ±50ppm/°C ±25ppm/°C
Power Rating 100mW 125mW 250mW
Operating Temperature Range -55°C to +125°C
The PAT chip attenuator series are available in a wide range of power
ratings from 100mW to 250mW. The surface mount package is ideal for
applications where parasitic capacitance and inductance are concerns. Typical applications include wireless
communication receivers and transmitters.
Test Condition Tolerance
Attenuation ∆ Impedance
Short Time Overload 2.5 x rated voltage, 5 sec ±0.02dB ±0.2%
Load Life 1000 Hours, 70°C ±0.04dB ±0.5%
Moisture Resistance 1000 Hours, 60°C, 95% ±0.04dB ±0.5%
Temperature Cycle 5 Cycles, 125°C High, -55 Low ±0.02dB ±0.2%
Resistance to Solder Heat 260°C, 10 sec. ±0.02dB ±0.2%
Terminal Strength Fulcrum dist: 90mm, Bending width: 3mm
Substrate: Glass epoxy t=1.6mm ±0.02dB ±0.2%
Solderability 235°C, 3 sec. >95% coverage
Insulation Resistance 500V, 1 minute >1000MW
Environmental Data
PAT Sheet 1 of 3
37
IRC Advanced Film Division
© 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
Series Issue October 2006PAT
High Frequency
Surface Mount Attenuators
Physical Data
3
4
1: Electrode (surface soldering and lead-free possible) 2: Covering resin 3: Alumina substrate 4: Thin film resistor 5: Mark (shows impedance, attenuations and date)
a
Dimensions (mm)
L2.00 ±0.10
W1.25 ±0.10
t0.40 ±0.10
a0.50 ±0.20
b0.60 ±0.20
W1 0.40 ±0.20
W2 0.40 ±0.20
W3 0.35 ±0.20
b1 0.70 ±0.10
b2 0.50 ±0.10
b3 0.70 ±0.10
a1 0.80 ±0.10
a2 2.30 ±0.10
t
PAT1220
PAT1632
Dimensions (mm)
L3.20 ±0.20
W1.60 ±0.20
t0.40 ±0.10
a1.00 ±0.25
b1.00 ±0.20
W1 0.55 ±0.25
W2 0.40 ±0.25
W3 0.40 ±0.20
b1 1.00 ±0.20
b2 0.65 ±0.20
b3 0.80 ±0.10
a1 1.20 ±0.20
a2 3.40 ±0.20
PAT3042S
Dimensions (mm)
C (50
W
) D (75
W
)
L4.20 ±0.20
W3.00 ±0.20
t0.80 ±0.15
a0.80 ±0.20
b0.50 ±0.20 0.30 ±0.20
Lb 3.10 ±0.20 3.50 ±0.20
Wa 1.05 ±0.20 1.55 ±0.20
Wb 0.95 ±0.20 1.55 ±0.20
W1 0.95 ±0.20 0.55 ±0.20
W2 0.80 ±0.20 0.60 ±0.20
W3 0.95 ±0.20 0.55 ±0.20
W4 0.90 ±0.20 0.60 ±0.20
Wb 0.95 ±0.20 1.55 ±0.20
a
1
bb
a1 a1
a2
b1
L
25
1
0
K
t
C01
a1 a1
b1
Lb
3
4
C (50
W
) D (75
W
)
b1 2.90 ±0.20 3.30 ±0.20
b2 0.90 ±0.20 1.10 ±0.20
b3 1.10 ±0.20 1.00 ±0.20
a1 1.20 ±0.20 1.00 ±0.20
a2 5.30 ±0.20 5.30 ±0.20
C07
K
1: Electrode (surface soldering and lead-free possible) 2: Covering resin 3: Alumina substrate 4: Thin film resistor 5: Mark (shows impedance, attenuations and date)
1: Electrode (surface soldering and lead-free possible) 2: Covering resin 3: Alumina substrate 4: Thin film resistor 5: Mark (shows impedance, attenuations and date)
a1 a1
a2
b1
3
4
t
aa
L
25
bb
L
b
25
b
a2
W1
W2
W3
W3
W1
W2
W3
W3
W1
W2
W3
W4
W
a
a
b2
b3
b3
W
b2
b3
b3
W
b2
b3
b3
Wa
Wb
38 Sheet 2 of 3
IRC Advanced Film Division
© 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
Series Issue October 2006PAT
High Frequency
Surface Mount Attenuators
Dimensions (mm)
L2.00 ±0.10
W1.25 ±0.10
t0.40 ±0.10
a0.50 ±0.20
b0.60 ±0.20
W1 0.40 ±0.20
W2 0.40 ±0.20
W3 0.35 ±0.20
b1 0.70 ±0.10
b2 0.50 ±0.10
b3 0.70 ±0.10
a1 0.80 ±0.10
a2 2.30 ±0.10
% of Rated Power
Temperature in °C
25° 70° 125°
0
60
100
Power Derating Curve
1
Schematic Diagram Data
2
333
1 2
3 3
39
Ordering Data
Prefix HFR - PAT1220 - C - 3dB - T(5)
Model
PAT1220; PAT1632; PAT3042SD (75W);
PAT3042SC(50W)
Attenuation
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 16, 20dB
Impedence
C = 50W; D = 75W
Package
T=Tape, B=Bulk, Taping Quantity Unit:5 (5000), 1 (1000)
Ambient Temperature (°C)
Sheet 3 of 3
