Series FR75-1
1.0A, 60 Vdc Optically Isolated
Short-Circuit Protected
Part Number
Description
FR75-1
1A, 60 Vdc short-circuit protected
solid-state relay for through-hole mount
ELECTRICAL SPECIFICATIONS
(–40°C to +85°C ambient temperature unless otherwise specified)
INPUT (CONTROL) SPECIFICATIONS
Input Voltage Range
Min
Max
Units
4.5
5.5
Vdc
15
mA
1.5
Vdc
50
µAdc
(See Note 1)
Input Current @ 5 Vdc (See Figure 2)
Must Turn-On Voltage
3.8
Vdc
Must Turn-Off Voltage
Must Turn-Off Current
Reserve Polarity
–10
Vdc
OUTPUT (LOAD) SPECIFICATIONS
Min
Max
Load Voltage Range
Units
60
Vdc
Output Current Rating (See Figure 4)
1.0
Adc
Leakage Current at Rated Voltage
100
µAdc
Transient Blocking Voltage
80
Vdc
Output Capacitance @25Vdc (25°C)
600
pF
Output Voltage Drop
0.32
Vdc
On Resistance
0.32
Ohm
Turn-On Time
3.0
ms
Turn-Off Time
0.3
ms
6
Adc
Trip Overload (See Figure 6)
MECHANICAL SPECIFICATION
TOP VIEW
BOTTOM VIEW
0.109 REF (2.769)
WEIGHT: .07 OZ. (2g)
1
FR75-1
TELEDYNE
4
0.017
(0.432)
+0.002
–0.001
6
0.010
(0.254)
±0.003
0.423 MAX (10.74)
0.190
MAX
(4.83)
0.70 MIN
(17.78)
0.300 (7.62)
0.463 MAX (11.76)
0.079 REF
(2.007)
3
1
3
6
4
FEATURES/BENEFITS
• Short-circuit protected: Prevents damage to
system components, assemblies and system
wiring
• Optical isolation: Isolates control circuits from
load transients and eliminates ground loops and
signal ground noise
• Low off-state leakage: For high off-state
impedance
• Switches high currents: To 1.0 Adc
• High noise immunity: Control signals isolated
from switching noise
• High dielectric strength: For safety and for
protection of control and signal level circuits
DESCRIPTION
The FR75-1 solid-state relay utilizes a power FET
switch that is protected against short circuits and
overload currents. The short-circuit protection feature
provides protection when a short or overload occurs
while the relay is on as well as when the relay is
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. Using the FR75-1
to switch power sources and loads prevents damage
to system assemblies and system wiring. The power
FET output offers low “ON” resistance and can switch
loads in either the high or the low side of the power
line. The FR75-1 is packaged in a low-profile miniDIP package.
0.200 (5.08)
• Material and Plating:
Pins and Header — Kovar gold plated; Cover — Nickel
• Tolerance: ±0.005 inch unless otherwise specified
Figure 1 – FR75-1 mechanical specification;
dimensions in inches (mm)
FR75-1 38
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2002 TELEDYNE RELAYS
FR75-1\072002\Q1
FR75-1
GENERAL SPECIFICATIONS
INPUT CURRENT VS. INPUT VOLTAGE
(+25°C ambient temperature unless otherwise specified)
18
16
ENVIRONMENTAL SPECIFICATION
Max
Units
Operating Temperature
– 40
+85
°C
Storage Temperature
– 55
+125
°C
+125
°C
125
°C/W
Junction Temperature @ 1A
Thermal Resistance θJA
14
Input Current (mA)
Min
12
10
8
6
Shock
1500
g
Vibration
100
g
4
Dielectric Strength
500
Vac
2
10 9
Ohm
Insulation Resistance
0
(@500 Vdc)
Input to Output Capacitance
Altitude
5
0
1
2
ft.
4
5
6
7
8
9
10
Input Voltage (V)
pF
55,000
3
Figure 2 — FR75-1 input current vs. input voltage
Resistance to
Soldering Heat
MIL STD 202, method 210
Solderability
MIL STD 202, method 208
Thermal Shock
MIL STD 202, method 107
FUNCTIONAL BLOCK DIAGRAM
+IN (1)
INPUT
with
LEDs
Optical
Isolation
Detection
Circuit
Switching
Circuit
Output Switch
(MOSFET)
with Current
Sense
+OUT (4)
–OUT (6)
-IN (3)
Figure 3 — FR75-1 functional block diagram
LOAD CURRENT VS. AMBIENT TEMPERATURE
TYPICAL WIRING DIAGRAM
+5 Vdc Bias
1.2
Load Current (A)
1.0
4
+out
1
+in
+
DC
Power
24-48 Vdc
Typical
0.8
FR75-1
0.6
3
–in
0.4
6
–out
LOAD
–
Control
0.2
0
-55 -35
-15
5
25
45
65
85
105
125
Figure 5 — FR75-1 typical wiring diagram
Ambient Temperature (°C)
Figure 4 — FR75-1 load current vs. ambient
temperature
© 2002 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
FR75-1 39
FR75-1\072002\Q1
FR75-1
OVERLOAD TRIP CURRENT VS. TIME
7
MUST TRIP
6
Typical @ –40°C
Load Current (A)
5
4
Typical @ +25°C
3 Typical @ +85°C
2
1
MUST NOT TRIP
0.01
0.1
1.0
10.0
100
1000
Trip Time (sec)
Figure 6 — FR75-1 overload trip current vs. time
NOTES:
1. For input voltages greater than 6 volts, use an external resistor in
series with the relay input. Select resistor value with the following
equation: Rext. = (Vin–6Vdc)/15mA
2. Unless otherwise specified: conformance testing is at room
temperature; the input voltage is 5 Vdc or zero volts as required; the
output load is 48 Vdc, 1 amp.
3. With a shorted load condition, system inductance shall be limited to
50 µH.
4. Relay input voltage transitions should be less than 1.0 millisecond.
5. Maximum load current ratings are with the relay in free air and
soldered to a printed circuit board.
6. Loads may be attached to either the positive or negative output
terminal.
7. Timing is measured from the input voltage transition to the 10% or
90% point on the output voltage off-to-on or on-to-off transition. Rise
and fall times are measured from the 10 to 90% points on the output
voltage transition.
8. Hermeticity is not a requirement.
FR75-1 40
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2002 TELEDYNE RELAYS
FR75-1\072002\Q1