275

Fixed Coaxial Attenuators
Model 275
Medium Power, SMK Connectors
dc to 40.0 GHz
5 Watts
Conduction Cooled, Bi-directional Design
RoHS
TEST DATA: Swept data plots of attenuation and SWR
from 50 MHz to 40 GHz.
CONNECTORS: SMK (2.92mm) Male/Female connectors
- mate nondestructively with SMA per MIL-C-39012, 3.5mm
and other 2.92mm connectors.
Type/Description
Connector Options
1
2
SMK, Female
SMK, Male
CONSTRUCTION: Aluminum body, gold plated beryllium
copper contacts.
Features
WEIGHT: 17 g (0.6 oz.) maximum
o
o
o
PHYSICAL DIMENSIONS:
o
Compact Construction - Lowest size/power ratio.
Precision injection molded connectors.
Designed to meet environmental requirements of
MIL-DTL-3933.
Flat Response & Low SWR.
Specifications
NOMINAL IMPEDANCE:
50 Ω
FREQUENCY RANGE:
dc to 40.0 GHz
MAXIMUM DEVIATION OVER FREQUENCY:
Nominal
ATTN (dB)
Deviation (dB)
dc-26.5 GHz
26.5-40 GHz
3
+ 0.50
+ 1.00
6, 10, 20, 30
+ 0.80
+ 1.50
MAXIMUM SWR:
Frequency (GHz)
dc - 26.5
26.5 - 40
SWR
Dash No.
1.25
1.45
11
12
22
POWER RATING: 5 watts average (bi-directional) with
case temperature limited to 100 °C with appropriate conductive heat sink. 200 watts peak (5 μsec pulse width;
1.25% duty cycle).
NOTE:
DIM A
All dimensions are given in mm (inches) and are
nominal, unless otherwise specified.
MODEL NUMBER DESCRIPTION:
Example:
POWER COEFFICIENT: <0.002 dB/dB/watt
275 - XX - XX*
TEMPERATURE COEFFICIENT: <0.0004 dB/dB/°C
TEMPERATURE RANGE: -55 °C to 100 °C (case)
Connector Type
2.92mm Female/Female 39.6 (1.56)
2.92mm Male/Female
44.2 (1.74)
2.92mm Male/Male
48.8 (1.92)
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.
73
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