Fixed Coaxial Attenuators
Model 251
High Power, N Connectors
Convection Cooled, Bi-directional
dc to 6.0 GHz
200 Watts
RoHS
POWER RATING:
200 watts
average (Bi-directional)
to
25°C ambient temperature, derated linearly to 20 watts @
125°C ambient. 10 kilowatt
peak
(5
μsec
pulse width;
1% duty cycle).
POWER COEFFICIENT:
<0.0001 dB/dB/watt
TEMPERATURE COEFFICIENT:
<0.0004 dB/dB/°C
TEMPERATURE RANGE:
-55°C to 125°C
TEST DATA:
Swept data plots of attenuation and SWR
from 50 MHz to 6 GHz.
CONNECTORS:
Type N connectors per MIL-STD-348
interface dimensions - mate nondestructively with
MIL-C-39012 connectors.
Connector Options
Type/Description
Type N, Female
Type N, Male
3
4
Features
o
o
Quality connectors with special high temperature
support beads.
Designed to meet environmental requirements of
MIL-DTL-3933.
50
Ω
dc to 6.0 GHz
Specifications
NOMINAL IMPEDANCE:
FREQUENCY RANGE:
MAXIMUM DEVIATION OVER FREQUENCY:
Nominal
ATTN (dB)
10, 20, 30 , 40
MAXIMUM SWR:
Deviation (dB)
+ 2.00
CONSTRUCTION:
Black Finned Aluminum alloy body,
stainless steel connectors; gold plated beryllium copper
contacts.
WEIGHT:
1,530 g (3 lbs, 6 oz) maximum
MODEL NUMBER DESCRIPTION:
Example:
Frequency (GHz)
dc - 2
2-6
PHYSICAL DIMENSIONS:
SWR
1.10
1.20
Basic
Model
Number
251 - XX - XX
Attenuation
Value (dB)
Connector Options
1st digit is input side
2nd digit is output side
Connector
N Male
N Female
NOTE: All dimensions are given in mm (inches) and are maximum, unless otherwise specified.
DIM A
22.9 (0.90)
15.0 (0.59)
67
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: weinschel-sales@aeroflex.com
Revision Date: 9/30/2012
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