DC SOLID STATE RELAY
Series SR75-2
0.75 A, 300 Vdc OPTICALLY ISOLATED
SHORT CIRCUIT PROTECTED FOR AC OR DC LOADS
Part Number* Relay Description
SR75-2
Solid State Relay with Terminals for Through Hole
Mount
SR75-2S
*
Solid State Relay with Terminals for Surface Mount
A 鈥榃鈥?or 鈥楾鈥?suffix denoting the S
2
R鈩?Teledyne reliability screening level,
must be added to the part number.
FEATURES/BENEFITS
鈥?Short Circuit Protected - Prevents
damage to system components,
assemblies and system wiring. Can be
connected to protect AC or DC loads (AC
with diode bridge)
鈥?Optical Isolation - Isolates control circuits
from load transients Eliminates ground
loops and signal ground noise
鈥?Low Off-State Leakage - For high off-
state impedance
鈥?Switches High Voltages - To 300 Vdc
鈥?Switches High Currents - To 0.75 Adc
鈥?High Noise Immunity - Control signals
isolated from switching noise
鈥?High Dielectric Strength - For safety and
for protection of control and signal level
circuits
ELECTRICAL SPECIFICATIONS
(-55擄C TO 105擄C, Ambient Temperature Unless Otherwise Specified)
INPUT (CONTROL) SPECIFICATIONS
Min
Control Voltage Range (See Note 6)
Input Current @ 5 Vdc (See Figure 1)
Must Turn-On Voltage
Must Turn-Off Voltage
Reverse Voltage Protection
OUTPUT (LOAD) SPECIFICATION
Max Units
32.0
11.0
Vdc
mA
Vdc
1.5
Vdc
3.8
3.8
-32.0 Vdc
Min
Load Voltage Rating
Transient Blocking Voltage
Output Current Rating (See Figure 2)
On Resistance (See Figure 3)
Leakage Current at Rated Voltage
Turn-On Time
Turn-Off Time
dV/dt @ 60 V @ 25擄C
Electrical System Spike @ 25擄C
Output Capacitance @ 100 KHz, 25 Vdc
Input to Output Capacitance at 1 KHz
Dielectric Strength
Insulation Resistance
Junction Temperature
1000
10
8
100
Max Units
300
320
0.75
2.0
100
4.5
0.5
Vdc
Vdc
Adc
Ohm
碌A
ms
ms
V/碌s
鹵 600 Vpk
300
5
pF
pF
Vrms
Ohm
130
擄C
DESCRIPTION
The SR75-2 solid state relay utilizes a
power FET switch that is protected against
overload and short circuit currents. The
short circuit protection 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. Once the protection
trips the relay, it will remain off until reset
by cycling the input control line. Using the
SR75-2 to switch power sources and loads
can prevent fires, damage to system
assemblies and system wiring. The power
FET output offers low 鈥淥N鈥?resistance and
can switch loads in either the high or the
low side of the power line. The SR75-2 is
packaged in a 16 pin DIP package with
either surface mount or through hole
mounting available.
BLOCK DIAGRAM
漏 2000 TELEDYNE RELAYS
800-284-7007 鈥?www.teledynerelays.com
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