Series KD/LD
10A, 60Vdc Optically Isolated, Short-Circuit Protected
DC Solid-State Relay
Part Number* Relay Description
KD00CK
KD02CK
KD20CK
KD22CK
5A Solid-State Relay (SSR)
5A SSR with Switch Status
5A SSR with Short-Circuit Protection
5A SSR with Short-Circuit Protection and Switch
Status
LD00CM
LD02CM
LD20CM
LD22CM
10A Solid-State Relay
10A SSR with Switch Status
10A SSR with Short-Circuit Protection
10A SSR with Short-Circuit Protection and Switch
Status
* The Y suffix denotes parameters tested to MIL-PRF-28750 specifications.
The W suffix denotes parameters tested to Teledyne specifications.
FEATURES
• Available with short-circuit/current
overload protection
• Available with switch status output
• 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 package
• Built and tested to the requirements of
MIL-PRF-28750
DESCRIPTION
Max Units
15
1.5
3.8
-32
3.8
32
mAdc
Vdc
Vdc
Vdc
Vdc
The Series KD and LD solid-state relays
are screened utilizing MIL-PRF-28750
test methods and are packaged in low
profile hermetically sealed cases. These
relays are constructed with state-of-the-
art solid state techniques and feature
fully floating power FET output
technology. This allows the load to be
connected to either output terminal and
provides a low ON resistance. The input
(control) and output are optically isolated
to protect input logic circuits from output
transients. Available options include
short circuit and current overload
protection, which provides complete
protection for both the relay and 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. The second option
is a status output line. Switch status
returns the true status of the output
switch and is optically isolated from the
load. It provides status indication
independent of the control circuit of the
relay. The status line provides a logic 0
(low) when the relay output is off with
load voltage and continuity present, and
a logic 1 (high) when the output is on.
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
Input Current @ V
BIAS
= 5 Vdc (See Fig. 2)
Turn-Off Voltage (Guaranteed Off)
Turn-On Voltage (Guaranteed On)
Reverse Voltage Protection
Input Supply Range (See Note 1)
When used in 3 terminal configuration
(CMOS or open collector TTL) (See Fig. 1)
Min
INPUT (CONTROL) SPECIFICATION
Typ
Max Units
250
1
µAdc
mAdc
Vdc
Vdc
mAdc
Vdc
0.3
Vdc
Control Current
V
CONTROL
= 5 Vdc
V
CONTROL
= 18 Vdc
Control Voltage Range
Bias Supply Voltage (See Note 1)
Bias Supply Current
Turn-Off Voltage (Guaranteed Off)
Turn-On Voltage (Guaranteed On)
3.2
0
3.8
18
32
16
© 2002 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
KD/LD 51
KD/LD\072002\Q1
Series KD/LD
OUTPUT (LOAD) SPECIFICATIONS
(See Note 2)
Continuous Load Current (See Fig. 3)
KD and LD series without heat sink
LD series with heat sink
Leakage Current @ V
LOAD
=60Vdc
KD00CK, KD20CK
LD00CM, LD20CM
KD02CK, KD22CK
LD02CM, LD22CM
Output Voltage Drop
KD00CK, KD02CK
KD20CK, KD22CK
LD00CM, LD02CM @10A
LD20CM, LD22CM @10A
Continuous Operating Load Voltage
Transient Blocking Voltage @25°C
KD00CK, KD02CK
LD00CM, LD20CM
KD20CK, KD22CK
LD20CM, LD22CM
Turn-On Time (See Fig. 5)
Turn-Off Time (See Fig. 5)
Electrical System Spike @25°C
Output Capacitance at 25 Vdc, 100 KHz
Isolation (Input to Output)
KD00CK, KD20CK
LD00CM, LD20CM
KD02CK, KD22CK
LD02CM, LD22CM
Dielectric Strength
Insulation Resistance @ 500 Vdc
Output Junction Temperature
@ I
LOAD
= I
max rated
Maximum Junction Temperature
Thermal Resistance Junction to Ambient (θ
JA
)
Thermal Resistance Junction to Case (θ
JC
)
150
30
7
°C
°C/W
°C/W
1000
10
9
130
10
10
15
15
pF
pF
pF
pF
Vac
Ohms
°C
±600
1600
.60
.70
1.2
1.4
60
80
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
NO STATUS
BLOCK DIAGRAM
Typ
Max Units
5
10
100
100
2
2
Adc
Adc
µA
µA
mA
mA
Min
ON Resistance, I
LOAD
= 100 mA, T
J
= 25°C, (See Note 3)
.075 Ohm
.075 Ohm
.100 Ohm
.100 Ohm
5
2
ms
ms
Vpk
pF
MECHANICAL SPECIFICATION
KD/LD 52
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2002 TELEDYNE RELAYS
KD/LD\072002\Q1
Series KD/LD
ENVIRONMENTAL SPECIFICATIONS
Min
Temperature Range
Operating
Storage
Vibration 100 g
Constant Acceleration
Shock
0.5 ms pulse
-55
-55
10
+105
+125
3000
5000
1500
°C
°C
Hz
g
g
Typ
Max Units
STATUS OUTPUT TRUTH TABLE
(KD02CK, LD02CM, KD22CK, LD22CM)
Control Voltage
High
Low
Relay Output
Off
On
State Status Output Level
Low (V
SO
≤
0.4 Vdc)
High (V
SO
= V
STATUS
)
STATUS OUTPUT SPECIFICATIONS
(KD02CK, LD02CM, KD22CK, LD22CM)
Min
Status Supply Voltage
Status Leakage Current
@16Vdc
@30Vdc
Status (sink) Current (V
SO
< 0.4 Vdc)
Status Turn-On Time (See Fig. 6)
Status Turn-Off Time (See Fig. 6)
10
100
600
3.5
8.0
µAdc
µAdc
µAdc
ms
ms
Typ
Max Units
30
Vdc
BIAS (INPUT) CURRENT VS BIAS (INPUT) VOLTAGE
FIGURE 2 (See Note 1)
WIRING CONFIGURATIONS
FIGURE 1 (See Note 1)
KD/LD 53
KD/LD\072002\Q1
© 2002 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
Series KD/LD
LOAD CURRENT DERATING CURVE FOR
KD/LD SERIES WITHOUT A HEAT SINK
(A)
NORMALIZED ON RESISTANCE VS
JUNCTION TEMPERATURE
FIGURE 4 (See Note 3)
OVERLOAD CURRENT VS TIME TO
TRIP (TYPICAL)
KD20CK, KD22CK, LD20CM, LD22CM
FIGURE 7
OUTPUT TURN-ON AND TURN-OFF
TIMING
FIGURE 5
LOAD CURRENT DERATING CURVE FOR
LD SERIES
(B)
THERMAL DERATING CURVES
FIGURE 3
STATUS TURN-ON AND TURN-OFF
TIMING
SERIES LIMIT BIAS RESISTOR VS
BIAS VOLTAGE
FIGURE 8 (See Note 1)
NOTES:
FIGURE 6
1. Control input is compatible with CMOS or open collector TTL (with pull up resistor). For
bias voltages above 6V, a series resistor is required. Use the standard resistor value
equal to or less than the value found in Figure 8.
2. The rated input voltage is 5V for all tests unless otherwise specified.
3. 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:
R
(ON)
= NR • R
ON
@ 25°C
(KD00CK, LD00CM, KD02CK, LD02CM)
R
(ON)
=
NR(R
ON
@ +25°C ) + .025 ohm
(KD20CK, LD20CM, KD22CK, LD22CM)
4. 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 50
µH.
Maximum repetition rate into a shorted load should not exceed 10 Hz.
5. 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 0.6 mA. Select the
status resistor such that it does not allow more than 0.6 mA to flow through the status
output.
R
STATUS
=
V
STATUS
- 0.4V
TYPICAL TRIP CURRENT
CHARACTERISTICS FOR SHORT
CIRCUIT CONDITIONS
FIGURE 9
© 2002 TELEDYNE RELAYS
KD/LD\072002\Q1
Iso
6. Inductive loads should be diode suppressed. Input transitions should be
≤1
ms duration
and the input drive should be a bounceless contact type.
KD/LD 54
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
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