Precision Fixed Attenuator
50Ω
20W
40dB
-55°C to 100°C**
-55°C to 100°C
Coaxial
BW-S40W20+
DC to 18 GHz
Features
• DC to 18 GHz
• precise attenuation
• excellent VSWR, 1.25:1 typ
• stainless steel SMA male and female connectors
Maximum Ratings
Operating Temperature
Storage Temperature
CASE STYLE: DC1660
Connectors
SMA-F SMA-M
Model
BW-S40W20+
**85°C with output into open or short.
Permanent damage may occur if any of these limits are exceeded.
Applications
Outline Drawing
• matching
• instrumentation
• test set-ups
• high power measurements
+RoHS Compliant
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications
Electrical Specifications at 25°C
Parameter
Frequency Range
DC - 18
Condition (GHz)
Min.
DC
—
38.5
38.0
—
—
—
—
Typ.
—
40
—
—
1.08
1.15
1.25
—
Max.
18
—
41.0
41.5
1.3
1.3
1.4
20
Unit
GHz
Attenuation
DC - 12.4
12.4 - 18
DC - 6
6 - 12.4
12.4 -18
dB
VSWR
:1
Outline Dimensions (
inch
)
mm
A
--
--
B
1.50
38.10
C
--
--
D
2.33
59.18
E
.312
7.92
wt
grams
49.2
Input Power
1
W
1. Max. power at 25°C ambient, derate linearly to 4W at 100°C. Peak power 500W max. 5µsec. pulse width, 100Hz PRF.
Typical Performance Data
Frequency
(GHz)
0.01
2
4
6
8
10
12
14
16
18
Attenuation
(dB)
39.78
39.91
39.84
39.73
39.56
39.36
39.08
38.94
38.81
38.59
VSWR
(:1)
1.00
1.02
1.04
1.05
1.09
1.09
1.11
1.03
1.08
1.19
Electrical Schematic
R2
MALE
R1
R3
FEMALE
42
ATTENUATION (dB)
41
40
39
38
BW-S40W20+
ATTENUATION
1.3
BW-S40W20+
VSWR
1.2
VSWR
1.1
0
2
4
6
8
10 12
FREQUENCY (GHz)
14
16
18
1.0
0
2
4
6
8
10
12
FREQUENCY (GHz)
14
16
18
Notes
A.
Performance and quality attributes and conditions not expressly stated in this specification document are intended to be excluded and do not form a part of this specification document.
B.
Electrical specifications and performance data contained in this specification document are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions.
C.
The parts covered by this specification document are subject to Mini-Circuits standard limited warranty and terms and conditions (collectively, “Standard Terms”); Purchasers of this part are entitled
to the rights and benefits contained therein. For a full statement of the Standard Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits’ website at www.minicircuits.com/MCLStore/terms.jsp
www.minicircuits.com
P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com
Mini-Circuits
®
REV. A
M151107
BW-S40W20+
WZ/CP/AM
150702
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