High Frequency
Surface Mount Attenuators
RFAXX Series
•
Low return loss
•
RoHS compliant
•
High power chip attenuators
•
Long life, temperature stable thin film on ceramic technology
The RFAXX series of 50Ω 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.
Electrical Data
RFA53SDLF
Frequency Range
Power Rating @ 70°C
±0.2 dB
Attenuation
±0.3 dB
±0.4 dB
Impedance
Absolute TCR
RFA84SDLF
Frequency Range
Power Rating @ 70°C
±0.2 dB
Attenuation
±0.3 dB
±0.4 dB
Impedance
Absolute TCR
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.
RFA54DDLF
DC to 4GHz
0.25W
RFA55SDLF
DC to 4GHz
0.25W
RFA55DDLF
DC to 4GHz
0.25W
DC to 4GHz
0.25W
1, 2, 3, 4, 5, 6dB
7, 8, 9, 10dB
20, 30, 40dB
50Ω ±2%
±50ppm/°C
RFA84DDLF
DC to 1GHz
0.50W
1, 2, 3, 4, 5, 6dB
7, 8, 9, 10dB
20, 30, 40dB
50Ω ±2%
±50ppm/°C
RFA37DDLF
DC to 1GHz
1.0W
DC to 1GHz
0.50W
© 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
RFAXX Series Issue February 2009 Sheet 1 of 4
High Frequency
Surface Mount Attenuators
Frequency Performance Data
RFA55DDLF20dB Impedance
CH1
S 11
hp
RFA55DDLF40dB Impedance
CH1
S 11
hp
1 U FS
1:
50.178
W
6 Jul 2004 13:57:17
1.4336
W
228.16 pH
1 000. 000 000 MHz
2: 50.141
W
2.8203
W
2 GHz
3: 50.213
W
3.8828
W
3 GHz
1 U FS
1:
50.076
W
6 Jul 2004 10:02:26
1.4336
W
95.473 pF
1 000. 599 997 MHz
2: 50.617
W
-3.2188
W
2 GHz
3: 51.748
W
-4.8027
W
3 GHz
PRm
Cor
PRm
Cor
↑
1
4: 50.305
W
4.791
W
4 GHz
5: 50.563
W
5.2852
W
5 GHz
↑
1
4: 59.217
W
-6.1836
W
4 GHz
5: 55.033
W
-7.25
W
5 GHz
2
34
5
START
.030 000 MHz
STOP 6 000. 000 000 MHz
START
.030 000 MHz
STOP 6 000. 000 000 MHz
RFA55DDLF20dB Attenuation
CH1 S 21
hp
RFA55DDLF40dB Attenuation
6 Jul 2004 13: 58: 11
1:
-19.935 dB
1 000. 000 000 MHz
2:
3:
4:
-19.771 dB
2 GHz
-19.496 dB
3 GHz
-19.08 dB
4 GHz
-18.997 dB
5 GHz
↑
PRm
Cor
3:
4:
5:
CH1 S 21
hp
log MAG
10 dB/ REF 0 dB
log MAG
10 dB/ REF 0 dB
6 Jul 2004 10: 01: 51
1:
-39.782 dB
1 000. 599 997 MHz
2:
-39.753 dB
2 GHz
-40.632 dB
3 GHz
-39.283 dB
4 GHz
-34.725` dB
5 GHz
PRm
Cor
↑
5:
1
2
3
4
5
5
1
2
3
4
START
.030 000
MHz
STOP 6 000. 000 000 MHz
START
.030 000
MHz
STOP 6 000. 000 000 MHz
RFA55DDLF20dB VSWR
CH1 S 11
hp
RFA55DDLF40dB VSWR
6 Jul 2004 13: 57: 44
1:
1.0293
1 000. 000 000 MHz
2:
1.0569
2 GHz
PRm
Cor
CH1 S 11
hp
SWR
1
/
REF 1
SWR
1
/
REF 1
6 Jul 2004 10: 02: 14
1:
1.0339
1 000. 599 997 MHz
2: 1.0677
2 GHz
3: 1.1061
3 GHz
4:
1.1443
4 GHz
1.1831
5 GHz
PRm
Cor
3: 1.0803
3 GHz
4:
↑
5:
1.1001
4 GHz
1.1127
5 GHz
↑
5:
1
2
3
4
5
1
2
.030 000
MHz
3
4
5
START
.030 000
MHz
STOP 6 000. 000 000 MHz
START
STOP 6 000. 000 000 MHz
© 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
RFAXX Series Issue February 2009 Sheet 2 of 4
High Frequency
Surface Mount Attenuators
Physical Data
RFA53SDLF
A
D
E
B
D
E
RFA55SDLF
A
B
D
E
RFA84SDLF
A
B
C
C
C
RFA54DDLF
A
E
D
E
B
D
E
RFA55DDLF
A
B
D
E
RFA84DDLF
A
B
D
E
E
RFA37DDLF
E
E
B
A
C
C
C
C
Dimensions (mm)
Model
RFA53SDLF
RFA54DDLF
RFA55SDLF
RFA55DDLF
RFA84SDLF
RFA84DDLF
RFA37DDLF
A
B
C
D
1.20
1.20
1.20
1.20
1.40
1.40
2.00
E
5.00
5.00
5.00
5.00
8.00
8.00
13.00
2.70
3.80
4.50
4.50
5.25
5.25
7.00
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.80
0.80
1.00
1.00
1.10
1.10
1.40
© 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
RFAXX Series Issue February 2009 Sheet 3 of 4
High Frequency
Surface Mount Attenuators
Environmental Data
Test Condition
Load Life
Moisture Load
Life
Solder Heat
Resistance
Solderability
1000 Hours, 70°C
1000 Hours, 40°C
95% RH
350°C, 3 sec.
Maximum
100
Power Derating Curve
±1.0%
±1.0%
±1.0%
>95% coverage
0
% Of Rated Power
60
25°
70°
155°
Ambient Temperature (°C)
Ordering Data
Prefix
Model
HFR - RFA53SDLF - 10dB
G
Z00
RFA53SDLF; RFA54DDLF; RFA55SDLF; RFA55DDLF
RFA84SDLF; RFA84DDLF; RFA37DDLF
Attenuation
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40dB
Impedance Tolerance
G = ±2%
Packaging
Z00 = 100 pcs/bulk package
© 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
RFAXX Series Issue February 2009 Sheet 4 of 4
