Weinschel
C O R P O R A T I O N
Model 33
Medium Power Fixed Coaxial Attenuators
Bi-directional Design!
dc to 8.5 GHz
25 Watts
Features
o
o
o
o
Quality Connectors
with special high temperature support beads.
Designed to meet environmental requirements of
MIL-A-3933.
Low Intermodulation option available.
Mode free operation to 10 GHz.
POWER RATING (mounted horizontally):
25 watts
average (bi-directional)
to 25°C ambient temperature,
derated linearly to 2.5 watts @ 125°C. Note: 3 dB model
can handle 50 Watts
average (bi-directional).
5 kilowatt
peak
(5
µsec
pulse width; 0.25% duty cycle).
POWER COEFFICIENT:
<0.0006 dB/dB/watt
TEMPERATURE COEFFICIENT:
<0.0004 dB/dB/°C
TEMPERATURE RANGE:
-55 °C to 125 °C
CALIBRATION:
Insertion loss test data supplied at 0.05,
4.0, and 8.0 GHz. Other test data can be provided at
additional cost.
CONNECTORS:
Type N connectors per MIL-STD-348
interface dimensions - mate nondestructively with MIL-C-
39012 connectors.
Connector Options
3
4
Type/Description
Type N, Female
Type N, Male
Specifications
NOMINAL IMPEDANCE:
50
Ω
FREQUENCY RANGE:
dc to 8.5 GHz
MAXIMUM DEVIATION OVER FREQUENCY:
Nominal
ATTN (dB)
3, 6, 10, 20
30
Deviation (dB)
dc-4 GHz
4 - 8.5 GHz
+ 0.30
+ 0.60
+ 0.60
+ 1.00
CONSTRUCTION:
Black, finned aluminum body, gold
plated beryllium copper contacts.
WEIGHT:
170 g (6 oz.) maximum
PHYSICAL DIMENSIONS:
-9.25
-9.50
-9.75
-10.00
-10.25
-10.50
-10.75
0.05
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
Specification Limit
Specification Limit
Typical Attenuation Accuracy of a 33-10-34
MAXIMUM SWR:
Frequency (GHz)
dc - 4
4 - 8.5
1.40
1.30
1.20
1.10
1.00
0.05
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
SWR
1.20
1.30
NOTE:
Specification
Connector
N Male
N Female
DIM A
22.9 (0.90)
15.0 (0.59)
All dimensions are given in mm (inches) and are
maximum, unless otherwise specified.
MODEL NUMBER DESCRIPTION:
Example:
33 - XX - XX* - LIM
Basic
Model
Number
Attenuation
Value (dB)
IM Option**
Connector Options
1st digit is J1 side
2nd digit is J2 side
Typical SWR of a 33-10-34
INTERMODULATION (33-XX-XX-LIM Only):
3rd Order
Through Levels (IM3), -110 dBc maximum with two input
signals @ 869 MHz and 891 MHz with average carrier
power levels of +41 dBm each.
*Unit is bi-directional & full power may be applied to either J1 or J2.
**Add -LIM to entire model number for Low Intermodulation option.
5305 Spectrum Drive, Frederick, MD 21703-7362
!
TEL: 301-846-9222, 800-638-2048
!
Fax: 301-846-9116
web: www.weinschel.com
!
email: sales@weinschel.com
43
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