Weinschel
C O R P O R A T I O N
Model 3M
Model 4M
Fixed Coaxial Attenuators
Ruggedized SMA Connectors
dc to 12.4 GHz
dc to 18.0 GHz
2 Watts
POWER RATING:
2 watts
average
to 25°C ambient
temperature, derated linearly to 0.5 watts at 125°C.
500 watts
peak
(5
µsec
pulse width; 0.2% duty cycle).
POWER COEFFICIENT:
< 0.005 dB/dB/watts
TEMPERATURE COEFFICIENT:
< 0.0004 dB/dB/°C
Features
o
o
o
Rugged injection molded connectors.
Designed to meet environmental requirements of
MIL-A-3933.
Usable to 22 GHz.
TEMPERATURE RANGE:
-55°C to +125°C
CALIBRATION:
Insertion Loss and SWR Testing performed
across frequency range. Test data available at additional
cost.
CONNECTORS:
SMA connectors per MIL-STD-348 inter-
face dimensions - mate nondestructively with MIL-C-39012
connectors.
CONSTRUCTION:
Passivated stainless steel body and
connectors; gold plated beryllium copper contacts.
dc to 12.4 GHz
dc to 18.0 GHz
WEIGHT (Both Models):
dB VALUE
1 - 10, 20
30, 40, 50, 60
PHYSICAL DIMENSIONS:
WEIGHT (Net)
10 g (0.35 oz)
20 g (0.70 oz)
Specifications
NOMINAL IMPEDANCE:
50
Ω
FREQUENCY RANGE:
Model 3M:
Model 4M:
MAXIMUM DEVIATION OVER FREQUENCY:
Nominal ATTN (dB)
1-2
3-6
7 - 10
20
30, 40
50, 60
+
+
+
+
+
+
3M
0.30
0.30
0.30
0.50
0.75
1.00
+
+
+
+
+
+
4M
0.50
0.30
0.50
0.70
1.00
2.00
1.40
1.30
1.20
1.10
1.00
0.05
2.50
5.00
7.50
10.00
12.50
15.00
17.50
Specification
dB VALUE
1 -10, 20
30, 40, 50, 60
NOTE:
DIM A
30.5 (1.20)
47.0 (1.85)
Typical Attenuation Performance of 4M-10
MAXIMUM SWR:
Frequency (GHz)
dc - 4
4-8
8 - 12.4
12.4 - 18
1.40
1.30
1.20
1.10
1.00
0.05
2.50
5.00
7.50
10.00
12.50
15.00
17.50
All dimensions are given in mm (inches) and are
maximum, unless otherwise specified.
3M
1.15
1.20
1.25
---
4M
1.15
1.20
1.25
1.35
MODEL NUMBER DESCRIPTION:
Example:
*4M - XX
Basic
Model
Number
Attenuation
Value (dB)
Specification
*Add Prefix M for double male and F for double female connectors.
Typical SWR of a Model 4M-10
5305 Spectrum Drive, Frederick, MD 21703-7362
s
TEL: 301-846-9222, 800-638-2048
s
Fax: 301-846-9116
web: www.weinschel.com
s
email: sales@weinschel.com
23
5/25/99
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