272

Fixed Coaxial Attenuators
Model 272
High Reliability, N Connectors
dc to 18.0 GHz
2 Watts
Designed to meet requirements of
MIL-DTL-3933, CLASS III/IV, N/S
CONNECTORS: Precision Type N connectors per MILSTD-348 interface dimensions - mate nondestructively with
MIL-C-39012 connectors.
CONSTRUCTION: Stainless steel body and connectors;
gold plated beryllium copper contacts.
WEIGHT:
Features
o
Rugged injection molded connectors.
o
Screened (Model 272S) and Non-screened
(Model 272N) designs available.
o
Available in 1- 10, 20, 30 & 40 dB.
o
Test Data supplied at additional cost as follows:
dB VALUE
WEIGHT (Net)
1 - 10, 20, 30
40
70 g (2.6 oz)
100 g (3.6 oz)
PHYSICAL DIMENSIONS:.
Non-screened (N): Swept data plots of Attenuation
and SWR across the frequency band.
Screened (S): Swept data plots of Attenuation and
SWR across the frequency band. Film, Standard
data package includes lot record performace showing
pass/fail quantities for all tests and test reports as
applicable.
Specifications
Screening
dc to 18.0 GHz
Units are screened as follows:
MAXIMUM DEVIATION OVER FREQUENCY:
Nominal ATTN (dB)
1-9
10
20
30, 40
DIM A
57.9 (2.28)
68.1 (2.68)
NOTE: All dimensions are given in mm (inches) and are maximum,
unless otherwise specified.
NOMINAL IMPEDANCE: 50 Ω
FREQUENCY RANGE:
dB VALUE
1-10, 20, 30
40
dB
+
+
+
+
0.30
0.40
0.50
0.75
MAXIMUM SWR:
Frequency (GHz)
SWR
dc - 4
4-8
8 - 12.4
12.4 - 18
1.12
1.15
1.18
1.20
"N" versions:
SWR
Attenuation
Peak Power
"S" versions:
Thermal Shock
Monitored Thermal Cycle (MTC)
Attenuation
Conditioning
Peak Power
Attenuation
SWR
Radiographics
MODEL NUMBER DESCRIPTION:
POWER RATING: 5 watts average @ 25°C ambient
temperature, derated linearly to 0.5 watt @ 125°C.
1 kilowatt peak (5 μsec pulse width; 0.25% duty cycle)
Example:
272N - XX
Attenuation
Value (dB)
POWER COEFFICIENT: <0.005 dB/dB/Watt
TEMPERATURE COEFFICIENT: < 0.0004 dB/dB/°C
TEMPERATURE RANGE: -55°C to +125°C
41a
Basic
Model
Number
N = Non-screened
S = Screened
5305 Spectrum Drive, Frederick, MD 21703-7362 s TEL: 301-846-9222, 800-638-2048 s Fax: 301-846-9116
web: www.aeroflex.com/weinschel s email: [email protected]
Revision Date: 6/3/2014