© 2018 TELEDYNE RELAYS (800) 284-7007 • www.teledynecoax.com CCS-37S/CS-37S Page 1
CCS-37S\CS-37S\022018\Q1
Series CCS-37S/CS-37S
Miniature DC–18 GHz
Failsafe TRANSFER Coaxial Switch
COAX SWITCHES
ELECTRICAL CHARACTERISTICS
Form Factor TRANSFER,
break before make
Frequency Range
CCS-37S
CS-37S
DC–18 GHz
DC–18 GHz
Characteristic Impedance 50 Ohms
Operate Time 10 ms (max.)
Release Time 10 ms (max.)
Actuation Voltage Available 12 15 24 28 V
Actuation Current, max. @ ambient 380 300 250 200 mA
ENVIRONMENTAL AND PHYSICAL CHARACTERISTICS
Operating Temperature
Commercial Model, CCS-37S
Elite Model, CS-37S
–25°C to 65°C
–55°C to 85°C
Vibration (MIL-STD-202 Method 214,
Condition D, non-operating)
10 g’s RMS
Shock (MIL-STD-202 Method 213,
Condition D, non-operating)
500 g’s
Standard Actuator Life
Actuator Life w/ Additional Features
5,000,000 cycles
1,000,000 cycles
Connector Type SMA
Humidity (Moisture Seal) Available
Weight 2.5 oz. (70.87g) (max.)
TYPICAL PERFORMANCE CHARACTERISTICS
Frequency DC–3 GHz 3–6 GHz 6–12 GHz 12–15 GHz 15-18 GHz
Insertion Loss, dB, max. 0.2 0.2 0.5 0.5 0.5
Isolation, dB, min. 70 70 60 60 60
VSWR , max. 1.25:1 1.25:1 1.5:1 1.5:1 1.5:1
PART NUMBERING SYSTEM
Connector
S: SMA Female
Actuator Voltage
1: 28 Vdc Failsafe
2: 15 Vdc Failsafe
3: 12 Vdc Failsafe
4: 24 Vdc Failsafe
Actuator Type
0: Standard Contacts
C: Indicator Contacts
**SEE PARTS LIST ON PAGE 8
Options
T: TTL Drivers with Diodes
D: Transient Suppression
Diodes
M: Moisture Seal
S: 9 Pin D-Sub Connector
Actuator Voltage
CCS-37 S 1 C - T **
Series
Connectors Actuator Type
Options
For other options, contact factory.
PART NUMBER DESCRIPTION
CCS-37S Commercial Failsafe TRANSFER, DC-18GHz
CS-37S Elite Failsafe TRANSFER, DC-18GHz
The CCS-37S/CS-37S is a long-life high performance transfer switch designed for use in 50 Ohms
coaxial transmission lines operating over frequencies ranging from DC to 18 GHz. The switch is designed
for minimum size compatible with SMA connector spacing.
The failsafe switches on this page are provided with a spring operated actuator which is particularly
desirable in applications where the switch is connected to one position (normally closed) most of the
time and only periodically switched to the alternate position. In this type of application, holding power is
required only when operating in the alternate position. Also, switching circuitry is simplied, since only
one DC circuit is required.
For maximum limits, please see charts on page 3-5
Available with
USB & Ethernet
Control!
CCS-37S/CS-37S Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2019 TELEDYNE COAX SWITCHES
CCS-37S\CS-37S\022018\Q1
Series CCS-37S/CS-37S
Miniature DC–18 GHz
Failsafe TRANSFER Coaxial Switch
COAX SWITCHES
SCHEMATICS AND MECHANICAL OUTLINE
9 PIN D-SUB PINOUT FOR FAILSAFE TRANSFER
OPTIONS
Pin
No. Basic Indicators TTL Indicators &
TTL
1 + +
2 - -
3Common Common
4 1 1
5
6Vsw Vsw
7 A A
8 B B
9 C C
1
6
P/N 2706650
1
9
P/N 2707572
AMPHENOL P/N
1
11
P-17EHD-015P
6
5
15
10
“-s option” 9-pin d-sub connector (example: ccs-37s10-s)
TRUTH TABLE (with TTL option)
Logic
Input RF Path Indicator
(if applicable)
1
0 J1-J2 & J4-J3 B & C
1 J1-J3 & J4-J2 A & C
© 2018 TELEDYNE RELAYS (800) 284-7007 • www.teledynecoax.com CCS-37S/CS-37S Page 3
CCS-37S\CS-37S\022018\Q1
Series CCS-37S/CS-37S
Miniature DC–18 GHz
Failsafe TRANSFER Coaxial Switch
COAX SWITCHES
TYPICAL NARROWBAND RF INSERTION LOSS PERFORMANCE CURVES
tYpical
maximum test limit
-1
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
012345
Insertion Loss (dB)
Frequency (GHz)
Insertion Loss ( DC-5 GHz )
-1
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
5678910
Insertion Loss (dB)
Frequency (GHz)
Insertion Loss ( 5-10 GHz )
-1
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
10 11 12 13
Insertion Loss (dB)
Frequency (GHz)
Insertion Loss ( 10-13 GHz )
-1
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
13 14 15
Insertion Loss (dB)
Frequency (GHz)
Insertion Loss ( 13-15 GHz )
-1
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
15 16 17 18
Insertion Loss (dB)
Frequency (GHz)
Insertion Loss ( 15-18 GHz )
CCS-37S/CS-37S Page 4 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2019 TELEDYNE COAX SWITCHES
CCS-37S\CS-37S\022018\Q1
Series CCS-37S/CS-37S
Miniature DC–18 GHz
Failsafe TRANSFER Coaxial Switch
COAX SWITCHES
TYPICAL NARROWBAND RF ISOLATION PERFORMANCE CURVES
tYpical
maximum test limit
-140
-120
-100
-80
-60
-40
-20
0
012345
Isolation (dB)
Frequency (GHz)
Isolation ( DC-5 GHz )
-140
-120
-100
-80
-60
-40
-20
0
5678910
Isolation (dB)
Frequency (GHz)
Isolation ( 5-10 GHz )
-140
-120
-100
-80
-60
-40
-20
0
10 11 12 13
Isolation (dB)
Frequency (GHz)
Isolation ( 10-13 GHz )
-140
-120
-100
-80
-60
-40
-20
0
13 14 15
Isolation (dB)
Frequency (GHz)
Isolation ( 13-15 GHz )
-140
-120
-100
-80
-60
-40
-20
0
15 16 17 18
Isolation (dB)
Frequency (GHz)
Isolation ( 15-18 GHz )
© 2018 TELEDYNE RELAYS (800) 284-7007 • www.teledynecoax.com CCS-37S/CS-37S Page 5
CCS-37S\CS-37S\022018\Q1
Series CCS-37S/CS-37S
Miniature DC–18 GHz
Failsafe TRANSFER Coaxial Switch
COAX SWITCHES
TYPICAL NARROWBAND RF VSWR PERFORMANCE CURVES
tYpical
maximum test limit
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
012345
VSWR
Frequency (GHz)
VSWR ( DC-5 GHz )
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
5678910
VSWR
Frequency (GHz)
VSWR ( 5-10 GHz )
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
10 11 12 13
VSWR
Frequency (GHz)
VSWR ( 10-13 GHz )
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
13 14 15
VSWR
Frequency (GHz)
VSWR ( 13-15 GHz )
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
15 16 17 18
VSWR
Frequency (GHz)
VSWR ( 15-18 GHz )
CCS-37S/CS-37S Page 6 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2019 TELEDYNE COAX SWITCHES
CCS-37S\CS-37S\022018\Q1
Series CCS-37S/CS-37S
Miniature DC–18 GHz
Failsafe TRANSFER Coaxial Switch
COAX SWITCHES
Power Handling vs. Frequency
Estimates based on the following reference conditions:
• Ambient temperature of 40°C or less
• Sea level operation
• Load VSWR of 1.20:1 maximum
• No high-power (hot) switching
Please contact Teledyne Coax Switches for derating factors when applications do not meet the foregoing reference conditions.
3000
Power (W)
Frequency GHz
2000
1000
800
600
400
300
200
100
80
60
40
30
20
10
.1 .2 .3 .4 .6 .8 1 2 4 6 8 10 18
STANDARD SMA SWITCHES
TYPICAL POWER PERFORMANCE CURVE
© 2018 TELEDYNE RELAYS (800) 284-7007 • www.teledynecoax.com CCS-37S/CS-37S Page 7
CCS-37S\CS-37S\022018\Q1
Series CCS-37S/CS-37S
Miniature DC–18 GHz
Failsafe TRANSFER Coaxial Switch
COAX SWITCHES
Actuator
An actuator is the electromechanical mechanism that
transfers the RF contacts from one position to another upon
DC command.
Arc Suppression Diode
A diode is connected in parallel with the coil. This diode
limits the “reverse EMF spike” generated when the coil de-
energizes to 0.7 volts. The diode cathode is connected to
the positive side of the coil and the anode is connected to
the negative side.
Date Code
All switches are marked with either a unique serial number
or a date code. Date codes are in accordance with MIL-
STD-1285 Paragraph 5.2.5 and consist of four digits.
The rst two digits dene the year and the last two digits
dene the week of the year (YYWW). Thus, 1032 identies
switches that passed through nal inspection during the
32nd week of 2010.
Failsafe
A failsafe switch reverts to the default or failsafe position
when actuating voltage is removed. This is realized by a
return spring within the drive mechanism. This type of switch
requires the continuous application of operating voltage to
select and hold any position. (Multi-position switches are
normally open with no voltage applied).
Indicator
Indicators tell the system which position the switch is in.
Other names for indicators are telemetry contacts or tellback
circuit. Indicators are usually a set of internally mounted DC
contacts linked to the actuator. They can be wired to digital
input lines, status lights, or interlocks. Unless otherwise
specied, the maximum indicator contact rating is 30 Vdc,
50 mA, or 1.5 Watts into a resistive load.
Isolation
Isolation is the measure of the power level at the output
connector of an unconnected RF channel as referenced to
the power at the input connector. It is specied in dB below
the input power level.
TRANSFER Switch
A four-port switch consisting of two independent pairs of
RF paths. These pairs are actuated simultaneously. This
actuation is similar to that of a double-pole double-throw
switch.
Switching Time
Switching time is the total interval beginning with the arrival
of the leading edge of the command pulse at the switch DC
input and ending with the completion of the switch transfer,
including contact bounce. It consists of three parts: (1)
inductive delay in the coil, (2) transfer time of the physical
movement of the contacts, and (3) the bounce time of the
RF contacts.
TTL Switch Driver Option
As a special option, switch drivers can be provided for both
failsafe and latching switches, which are compatible with
industry-standard low-power Schottky TTL circuits.
Performance Parameters vs Frequency
Generally speaking, the RF performance of coaxial switches
is frequency dependent. With increasing frequency, VSWR
and insertion loss increase while isolation decreases. All
data sheets specify these three parameters as “worst case”
at the highest operating frequency. If the switch is to be
used over a narrow frequency band, better performance
can be achieved.
Actuator Current vs Temperature
The resistance of the actuator coil varies as a function of
temperature. There is an inverse relationship between the
operating temperature of the switch and the actuator drive
current. For switches operating at 28 VDC, the approximate
actuator drive current at temperature, T, can be calculated
using the equation:
Magnetic Sensitivity
An electro-mechanical switch can be sensitive to ferrous
materials and external magnetic elds. Neighboring ferrous
materials should be permitted no closer than 0.5 inches and
adjacent external magnetic elds should be limited to a ux
density of less than 5 Gauss.
GLOSSARY
IA
[1 + .00385 (T-20)]
Where:
IT= Actuator current at temperature, T
IA = Room temperature actuator current –
see data sheet
T= Temperature of interest in °C
IT =
Carrier
Frequency 1
Carrier
Frequency 2
PIM 3rd Order
Frequency
PIM 5th
Order Fre-
quency
870 MHz 893 MHz 847 MHz 824 MHz
3rd Order
Intermodulation
5th Order
Intermodulation
Transfer –103 dBm –123 dBm
–146 dBc –165 dBc
SPECIAL FEATURE
Switching High-Power or Highly Sensitive Signals
Ensure the most linear response with the best galvanically
matched contact system in the industry. Extremely low
passive intermodulation is standard on all of our switches.
CCS-37S/CS-37S Page 8 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2019 TELEDYNE COAX SWITCHES
CCS-37S\CS-37S\022018\Q1
Series CCS-37S/CS-37S
Miniature DC–18 GHz
Failsafe TRANSFER Coaxial Switch
COAX SWITCHES
FAILSAFE CCS-37S/CS-37S PART NUMBER LIST
* X = 1 (28Vdc), 2 (15Vdc), 3 (12Vdc) and 4 (24Vdc)
part no. part no.
1CCS-37SXC 44 CS-37SX0-S
2CCS-37SXC-D 45 CS-37SX0-T
3CCS-37SXC-DM 46 CS-37SX0-TM
4CCS-37SXC-DMS 47 CS-37SX0-TMS
5CCS-37SXC-DS 48 CS-37SX0-TS
6CCS-37SXC-M
7CCS-37SXC-MS
8CCS-37SXC-S
9CCS-37SXC-T
10 CCS-37SXC-TM
11 CCS-37SXC-TMS
12 CCS-37SXC-TS
13 CCS-37SX0
14 CCS-37SX0-D
15 CCS-37SX0-DM
16 CCS-37SX0-DMS
17 CCS-37SX0-DS
18 CCS-37SX0-M
19 CCS-37SX0-MS
20 CCS-37SX0-S
21 CCS-37SX0-T
22 CCS-37SX0-TM
23 CCS-37SX0-TMS
24 CCS-37SX0-TS
25 CS-37SXC
26 CS-37SXC-D
27 CS-37SXC-DM
28 CS-37SXC-DMS
29 CS-37SXC-DS
30 CS-37SXC-M
31 CS-37SXC-MS
32 CS-37SXC-S
33 CS-37SXC-T
34 CS-37SXC-TM
35 CS-37SXC-TMS
36 CS-37SXC-TS
37 CS-37SX0
38 CS-37SX0-D
39 CS-37SX0-DM
40 CS-37SX0-DMS
41 CS-37SX0-DS
42 CS-37SX0-M
43 CS-37SX0-MS