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Dry, Convection-Cooled, Bi-Directional 2 Watts to 300 Watts

Bird™s A-Series RF attenuators feature high-quality, robust construction, and conservative power ratings. A-Series attenuators will operate at 120% of nominal power rating at 25C and below. Bi-directional operation permits either connector to be used as the input without fear of burnout.

Temperature Derating Curves

General Specifications

  • Impedance: 50 ohms, nominal.
  • Coolant type: Dry (convention cooled).
  • Ambient Temperature Range: -40C to +40C.
  • Operating Position: 2W-75W:Any.100W - 300W: Vertical.
  • Finish: Connectors, and 2W & 5W bodies: Silver or tri-alloy plated, except nickel plate for BNC male-female and 2W SMA models.Fin Assemblies: Black anodized, or black semi-gloss paint per federal standard 595

  • Convection-cooled for quiet, maintenance-free operation.
  • Maximum VSWR of 1.10:1 at 1GHz; 1.25:1 max. at up to 4 GHz, as noted.
  • Bi-directional designs for maximum convenience-use either connector for input.
  • Wide variety of connector options.
dB
Attenuation
ACCURACY
DC to 1 MHz
1 MHz to
Max. Frequency
1 0.3 dB 0.5 dB
2 0.3 dB 0.5 dB
3 0.3 dB 0.5 dB
6 0.4 dB 0.6 dB
10 0.4 dB 0.8 dB
20 0.5 dB 1.0 dB
30 0.8 dB 1.3 dB
Model
Series
Power Frequency
@Max.VSWR
Conn.
Options

Dimensions**
with N Conn.

Weight
2-A-MFA 2.0W@40C
2.0W@25C
DC-1GHz@1.10:1
DC-4GHz@1.25:1N
SMA (M+F) 1.3" L x 0.42" Dia
40.7mm x20.4mm
0.4oz
(11.4 g)
2-A 2.0W@40C
2.0W@25C
DC-1GHz@1.10:1
DC-4GHz@1.25:1 N
BNC,N,TNC 2.17" L x 0.8" Dia
55.2mm x20.4mm
3.1oz
(88 g)
5-A 5.0W@40C
6.0W@25C
DC-1GHz@1.10:1
DC-4GHz@1.25:1 N
BNC,N,TNC 2.17" L x 0.8" Dia
55.2mm x20.4mm
3.1oz
(88 g)
10-A 10W@40C
12W@25C
DC-1GHz@1.10:1
DC-4GHz@1.25:1
BNC,N,TNC 2.59" L x 2.3" Dia
65.8 x 58.5mm
6.2oz
(177 g)
25-A 25W@40C
30W@25C
DC-1GHz@1.10:1
DC-4GHz@1.25:1
BNC,N,TNC 5.29" L x 2.3" Dia
134.4 x 58.5mm
12.3oz
(351 g)
50-A 50W@40C
60W@25C
DC-1GHz@1.10:1
DC-2.4GHz@1.25:1
BNC,N,TNC

5.29" L x 2.3" Dia
134.4 x 58.5mm

1.19oz
(542 g)
75-A 75W@40C
90W@25C
DC-1GHz@1.10:1
DC-2.4GHz@1.25:1
BNC,N,TNC 7.29" L x 2.3" Dia
185.2mm x 58.5 mm
1.44oz
(656 g)
100-A 100W@40C
120W@25C
DC-2GHz@1.10:1
2.3GHz@1.25:1
BNC,N,TNC
IEC7/16
6.4"H x 2.6"W x 6.8"D
162.6 x 66.1 x172.8mm
4.3 lb
(1.95 kg)
150-A 150W@40C
180W@25C
DC-1GHz@1.10:1
DC-2.4GHz@1.25:1
BNC,N,TNC
IEC7/16
11.87"H x 2.6"W x 6.8"D
301.5 x 66.1 x172.8mm
6.6oz
(2.95 g)
300-A 300W@40C
360W@25C
DC-1GHz@1.10:1
DC-2.4GHz@1.25:1
BNC,N,TNC
IEC7/16
10.87"H x 5.4"W x 6.8"H
276.1 x 137.2x172.8mm
12 lb
(5.45 g)
* Dimensions and weight are for reference only, and are nominal values for units with male N-type connector, or supplied connector
if N-type is not available. Form factor for higher power models varies from illustrated examples.
WISCO International, Inc. - MIAMI, FL U.S.A.
Fax: (954) 370-3997 | E-mail: wiscointl@wiscointl.com

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