Fixed Coaxial Attenuators
Model 75A
Medium Power Fixed Coaxial Attenuator
Bi-directional Design
TEMPERATURE RANGE:
-55 °C to 125 °C
TEST DATA SUPPLIED:
Sweep SWR/Attenuation data/
plots performed across 0.1-40 GHz frequency range.
CONNECTORS:
2.92mm (Male/Female) connectors -
mate nondestructively with SMA per MIL-C-39012, 3.5mm
and other 2.92mm connectors.
Connector Options
Type/Description
2.92mm, Female
2.92mm, Male
1
2
dc to 40.0 GHz
5 Watts
Features
o
o
o
o
Compact Construction -
Lowest size/power ratio.
Precision injection molded connector dielectric.
Designed to meet environmental requirements of
MIL-DTL-3933.
Flat Response.
CONSTRUCTION:
Black, finned aluminum body, gold
plated beryllium copper contacts.
WEIGHT:
200 g (7.0 oz.) maximum
PHYSICAL DIMENSIONS:
Specifications
NOMINAL IMPEDANCE:
50
Ω
FREQUENCY RANGE:
dc to 40.0 GHz
MAXIMUM DEVIATION OVER FREQUENCY:
Nominal
ATTN (dB)
3
6, 10, 20, 30
MAXIMUM SWR:
Deviation (dB)
dc-18 GHz
18-40 GHz
+ 0.50
+ 0.80
+ 1.00
+ 1.50
Dash No.
11
12
22
Connector Type
DIM A
2.92mm Female/Female 39.9 (1.56)
2.92mm Male/Female
44.1 (1.74)
2.92mm Male/Male
48.8 (1.92)
Frequency (GHz)
dc - 18
18 - 40
SWR
1.25
1.45
NOTE:
POWER RATING (mounted horizontally):
5 watts
aver-
age (bi-directional)
to 25°C ambient temperature, derated
linearly to 0.5 Watt @ 125°C. 200 watts
peak
(5
μsec
pulse
width; 1.25% duty cycle).
POWER COEFFICIENT:
<0.002 dB/dB/watt
TEMPERATURE COEFFICIENT:
<0.0004 dB/dB/°C
All dimensions are given in mm (inches) and are
nominal, unless otherwise specified.
MODEL NUMBER DESCRIPTION:
Example:
75A - XX - XX*
Basic
Model
Number
Attenuation
Value (dB)
Connector Options
-11 Female/Female
-12 Female/Male
-22 Male\Male
*Unit is bi-directional and full power may be applied to either connector.
35
5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048 Fax: 301-846-9116
web: www.aeroflex-weinschel.com email: weinschel-sales@aeroflex.com
Revision Date: 11/18/08
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