1A, 80 Vdc Optically Isolated
Short-Circuit Protected
FEATURES/BENEFITS
• Short-circuit protected
• Overload trip
• Low off-state leakage current
• Optical isolation
• Compact package
Part Number
ZD20CD*
Description
1A, 80 Vdc, short-circuit protected
up to 60 Vdc, solid-state relay for
through-hole mounting
1A, 80 Vdc, short-circuit protected up
to 60 Vdc, solid-state relay for surface
mount
MECHANICAL SPECIFICATIONS
ZD20CD Series
SZD20CD*
*T, W level screening available
ELECTRICAL SPECIFICATIONS
(–55°C to +105°C ambient temperature
unless otherwise specified)
INPUT (CONTROL) SPECIFICATIONS
Min
Input Current
Input Voltage @10mA
Must Turn-On
Must Turn-Off Current
Must Turn-Off Voltage
Reverse Polarity
–6
8
2
8
100
0.8
Max
20
3
Units
mA
Vdc
mA
µA
Vdc
Vdc
OUTPUT (LOAD) SPECIFICATIONS
Min
Load Voltage Range
Leakage Current at Rated Voltage
Transient Blocking Voltage @25°C
Output Capacitance @25Vdc (25°C)
Output Voltage Drop @1A
On Resistance
Turn-On Time
Turn-Off Time
Trip Overload
Short Circuit Protection
(See Figure 7)
60
0
Output Current Rating (See Figure 6)
Max
80
1.0
20
100
600
0.55
0.55
2.0
1.0
Units
Vdc
A
µA
Vdc
pF
Vdc
Ohm
ms
ms
A
Vdc
Figure 1
TYPICAL WIRING DIAGRAM
Rs
**
*
1
2
3
6
5
4
LOAD
*
LOAD
*Shorted internally
**Series resistor required to limit input current to 20mA maximum
Figure 2
FUNCTIONAL BLOCK DIAGRAM
+IN (1)
INPUT
with
LEDs
–IN (3)
Optical
Isolation
Detection
Circuit
Switching
Circuit
Output Switch
(MOSFET)
with Current
Sense
+OUT (6)
ZD
–OUT (4)
Figure 3
© 2004 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
ZD Page 1
2DSZD20CD Rev --
1A, 80 Vdc Optically Isolated
Short-Circuit Protected
GENERAL SPECIFICATIONS
(+25°C ambient temperature unless otherwise specified)
ENVIRONMENTAL SPECIFICATIONS
Min
Operating Temperature
Storage Temperature
Junction Temperature @1A
Thermal Resistance
θ
JA
Shock
Vibration
Dielectric Strength
Insulation Resistance
(@500 Vdc)
Input to Output Capacitance
Solderability
Thermal Shock
1500
100
1500
10
9
5
–55
–55
Max
+105
+125
+125
+125
Units
Control Current (mA)
20
18
16
14
12
10
8
6
4
2
0
0
.5
1.0
1.5
Volts
2.0
2.5
3.0
3.5
ZD20CD Series
CONTROL CURRENT VS. INPUT VOLTAGE
+105°C +25°C –55°C
°C
°C
°C
°C/W
g
g
Vac
Ohm
pF
Resistance to Soldering Heat MIL STD 202, method 210
MIL STD 202, method 208
MIL STD 202, method 107
1.2
1.0
Load Current (A)
Figure 4
LOAD CURRENT VS. AMBIENT TEMPERATURE
TYPICAL TURN-ON TIME VS. INPUT CURRENT
0.8
0.6
0.4
0.2
0
–55
–35
–15
5
25
45
65
85
105
125
Ambient Temperature (°C)
Figure 6
Figure 5
TYPICAL OVERLOAD TRIP CURRENT VS. TIME
NOTES:
1. The ZD20CD relay’s input current should be
limited to between 8 and 20mA. An external
resistor whose value =(V
IN
– 2.5 volts) ÷ 0.012
Amps is a good choice for limiting input current.
2. Relay input transitions should be less than 1.0
millisecond.
3. Loads may be attached to either the positive or
negative output terminal.
4. Maximum load current ratings are with the
relay in free air and soldered to a printed circuit
board.
5. Timing is measured from the input current
transition to the 10% or 90% points on the
output voltage transition.
6. Overload conditions (including shorted loads)
are specified for load supply voltages to 60 Vdc
maximum.
7. For through-hole-PCB-solder-attaching
ZD20CD series relays, the wave-solder or
solder pot operations are limited to +260°C
maximum for 10 seconds, maximum.
8. For surface-mount-solder-attaching SZD20CD
series relays, in IR heating or convection
heating systems, the component temperature
is limited to +235°C maximum for 10 seconds
maximum.
Figure 7
ZD Page 2
SPECIFICATIONS UNDER REVISION CONTROL
© 2004 TELEDYNE RELAYS
2DSZD20CD Rev --
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