© 2002 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com CD 41
CD\072002\Q1
2A, 60Vdc Optically Isolated, Short-Circuit Protected
DC Solid-State Relay
FEATURES
•Available with short circuit/current
overload protection
•Available with input status monitor
•TTL and CMOS compatible control
•Low ON resistance power FET output
•Fast switching speed
•Meets 28 Vdc system requirements of
MIL-STD-704
• Optical isolation
•Low profile hermetic ceramic package
•Built and tested to the requirements of
MIL-PRF-28750
DESCRIPTION
This all solid-state relay utilizes the
latest technology to provide a low ON
resistance. The control (input) and load
(output) are optically isolated to protect
input logic circuits from voltage and
current transients which can occur on
the output supply. The optical isolation
also provides a full floating output, thus
allowing the load to be connected to
either output terminal. The control circuit
is buffered to enable the relay to be
driven directly from standard CMOS or
open collector TTL logic circuits.
Available options include short circuit
and current overload protection, which
provides complete protection for both
the relay and the system wiring. This
feature not only provides protection
should a short or overload occur while
the relay is on, but will also provide
protection should the relay be switched
into a short. In either case, the relay will
sense the short circuit condition and
then block it indefinitely until the short is
removed and the unit is reset by cycling
the input control. The second option is a
status output, which provides a built-in-
test function. This feature checks the
input circuitry of the relay and provides a
logic (0) low when the input circuit is
turned on and operational. Both options
are available either together or
separately as standard features.
Series CD
Part* DESC Drawing Relay Description
Number Number
CD00CFW Basic Solid-State Relay (SSR)
CD00CFY 90091-008
CD01CFW SSR with Control Status
CD01CFY 90091-006
CD20CDW SSR with Short-Circuit Protection
CD20CDY 90091-004
CD21CDW SSR with Short-Circuit Protection
CD21CDY 90091-002 and Control Status
* The Y suffix denotes parameters tested to MIL-PRF-28750 specifications.
The W suffix denotes parameters tested to Teledyne specifications.
For surface mount (SMT), add “S” prefix to part number. Example:
SCD00CFW
ELECTRICAL SPECIFICATIONS
(-55°C TO +105°C UNLESS OTHERWISE NOTED)
INPUT (CONTROL) SPECIFICATION
When used in 2 terminal configuration
(TTL or direct control) (See Fig. 1) Min Typ Max Units
Input Current @ VIN = 5 Vdc (See Fig. 2) 14 15 mA
Turn-Off Voltage (Guaranteed Off) 1.5 Vdc
Turn-On Voltage (Guaranteed On) 3.8 Vdc
Reverse Voltage Protection -32 Vdc
Input Supply Range (See Note 4) 3.8 6 Vdc
INPUT (CONTROL) SPECIFICATION
When used in 3 terminal configuration
(CMOS or open collector TTL) (See Fig. 1) Min Typ Max Units
Control Current
VCONTROL = 5 Vdc 250 µA
VCONTROL = 18 Vdc 1 mA
Control Voltage Range 0 18 Vdc
Bias Supply Voltage (See Note 4) 3.8 6 Vdc
Bias Supply Current @ VBIAS = 5 Vdc 14 15 mA
Turn-Off Voltage (Guaranteed Off) 3.2 Vdc
Turn-On Voltage (Guaranteed On) 0.3 Vdc
CD 42 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2002 TELEDYNE RELAYS
CD\072002\Q1
Series CD
OUTPUT (LOAD) SPECIFICATIONS
(See Note 2) Min Typ Max Units
Continuous Load Current (See Fig. 3)
CD20CD 1.0 Adc
CD21CD 1.0 Adc
CD00CF 2.0 Adc
CD01CF 2.0 Adc
Leakage Current @ VLOAD = 60 Vdc 40 µAdc
Output Voltage Drop
CD20CD 0.6 Vdc
CD21CD 0.6 Vdc
CD00CF 0.75 Vdc
CD01CF 0.75 Vdc
Continuous Operating Load Voltage 60 Vdc
Transient Blocking Voltage (See Note 3) 80 Vdc
ON Resistance Rds (on) at TJ = 25°C ILOAD = 100 mAdc (See Fig. 4)
CD20CD 0.36 0.45 Ohm
CD21CD 0.36 0.45 Ohm
CD00CF 0.16 0.22 Ohm
CD01CF 0.16 0.22 Ohm
Turn-On Time (See Fig. 5) 1.5 ms
Turn-Off Time (See Fig. 5) 0.25 ms
Electrical System Spike ±600 Vdc
Output Capacitance at 25 Vdc, 100 KHz 475 pF
Input to Output Capacitance 10 pF
Dielectric Strength 1000 Vac
Insulation Resistance @ 500 Vdc 109Ohm
Maximum Junction Temperature (TJ Max)
CD00 150 °C
CD01 150 °C
Thermal Resistance Junction to Ambient (θJA)80°C/W
Thermal Resistance Junction to Case (θJC)20°C/W
STATUS OUTPUT SPECIFICATIONS
(CD01CF AND CD21CD) Min Typ Max Units
Status Supply Voltage (See Note 7) 30 Vdc
Status Leakage Current @ 15 Vdc 4 µAdc
Status (sink) Current (VSO < 0.3 Vdc) 2 mAdc
BLOCK DIAGRAM (BOTTOM VIEW)
MECHANICAL SPECIFICATIONS
© 2002 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com CD 43
CD\072002\Q1
Series CD
SHORT CIRCUIT SPECIFICATIONS
(CD20CD AND CD21CD) Min Typ Max Units
Surge Current (See Fig. 7 and Note 6) 2.4 Adc
ENVIRONMENTAL SPECIFICATIONS
Min Typ Max Units
Temperature Range
Operating -55 +105 °C
Storage -55 +125 °C
Vibration, 100 g 10 3000 Hz
Constant Acceleration 5000 g
Shock, 0.5 ms 1500 g
TABLE 1: STATUS OUTPUT TRUTH TABLE
(CD01CF AND CD21CD)
Control Voltage Output Status Status Output Level
High Off High (VSO = VSTATUS)
Low On Low (VSO) ≤ 0.3 Vdc)
INPUT CURRENT VS VOLTAGE
FIGURE 2 (SEE NOTE 4)
LOAD CURRENT DERATING CURVE
FIGURE 3
WIRING CONFIGURATIONS
FIGURE 1 (SEE NOTE 8)
CD 44 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2002 TELEDYNE RELAYS
CD\072002\Q1
NOTES:
1. Control input is compatible with CMOS or open collector
TTL (with pull up resistor).
2. The rated input voltage is 5V for all tests unless otherwise
specified.
3. Transient blocking voltage tests are performed per
MIL-STD-704 (28 Vdc systems).
4. For bias voltages above 6V, a series resistor is required.
Use the standard resistor value equal to or less than the
value found from Figure 8.
5. To calculate the maximum ON resistance for a given
junction temperature, find the normalized ON resistance
factor (NR) from Figure 4. Calculate the new ON
resistance as follows:
(CD00CD, CD01CD) R(ON) = NR • RON @ 25°C
(CD20CD, CD21CD) R(ON) = 0.2 • NR + 0.21
6. Overload testing to the requirements of MIL-PRF-28750 is
constrained to the limits imposed by the short circuit
protection characteristics as defined in this specification.
System series inductance for “shorted-load” mode of
operation should be 30 µH maximum. Maximum repetition
rate into a shorted load should not exceed 10 Hz.
7. A status pull up resistor is required for proper operation of
the status output. Determine the current (Iso) required by
the status interface. Calculate the current (Is) through the
status resistor such that the sink current through the
status output is 2 mA. Select the status resistor such that
it does not allow more than 2 mA to flow through the
status output.
RSTATUS = VSTATUS - 0.3V
2 mA - Iso
8. Inductive loads should be diode suppressed. Input
transitions should be ≤ 1 ms duration and the input drive
should be a bounceless contact type.
SERIES LIMIT BIAS RESISTOR VS BIAS VOLTAGE
FIGURE 8 (SEE NOTE 4)
TRIP CURRENT VS TIME
FIGURE 7 (SEE NOTE 6)
OUTPUT TURN-ON AND TURN-OFF TIMING
FIGURE 5
NORMALIZED ON RESISTANCE VS JUNCTION
TEMPERATURE
FIGURE 4 (SEE NOTE 5)
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