Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC.
MICROCIRCUITS DIVISION 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
05/16/2002
Pg. 1 of 4
53262
SOLID STATE RELAY, 400VDC- 0.5A
OPTICALLY ISOLATED, SHORT CIRCUIT PROTECTED
Mii
MICROCIRCUITS DIVISION
Features:
SPST, Normally Open
1000VDC Optical Isolated Control Input
Power MOSFET, Low On-state Resistance
Built-in Short Circuit Protection
Wide Operating Temperature Range
Non-hermetic Package
Applications:
COTS Military Applications
Gun Turret Controls
Motor or Solenoid Driver
Displays/Lamps/Controls
Industrial Automation
DESCRIPTION
The 53262 Solid State Relay (SSR) is designed for applications in environment where hermeticity is not required. Its solid
state "contact" is resistant to damage from shock and vibration. It is also immune to contact related problems
(contamination, arcing, bouncing, etc.) associated with the electromechanical relays. Functionally, the device operates as
a single-pole single-throw (SPST), normally open (1 Form A) unidirectional high-side or low-side switch. Using a 500VDC
rated N-channel MOSFET as the switching device, the 53262 SSR offers low on-state resistance for lowering the power
dissipation, which allows operation over the temperature range of 40C to +85C with minimal heat sinking. A built-in
current sense circuit offers short circuit protection by turning off the MOSFET switch and allowing no current flow into the
load. After the 53262 SSR tripped due to a short circuit load, the output latches in the off-state until its control input
recycles. The control input is isolated from the load circuit using an optocoupler. This isolation barrier will eliminate the
system ground loop noise of the application. The optocoupler employs a dual high efficiency LED input allowing
TTL/CMOS logic to drive the solid state relay. The SSR is actuated by applying an input forward current of 5 to 10 mA to
the LED's. The 53262 SSR has no moving parts and is enclosed in a non-hermetic package.
ABSOLUTE MAXIMUM RATINGS (@ T
C
= 25C unless otherwise specified)
Output Voltage
400 VDC
Continuous Output Current @ T
C
= 85C
1 A
Continuous Control Input Current
20 mA
Storage Temperature Range
-65C to +150C
Operating Temperature Range
-40C to +85C
Junction Temperature
150C
Lead Solder Temperature
300C for 10 s
RECOMMENDED OPERATING CONDITIONS
Parameter Symbol
Min.
Max.
Units
Output Voltage
V
O (OFF)
400 VDC
Continuous Output Current
I
O (ON)
0.5
A
Control Input Current
I
F
5
10 mA
Operating Case Temperature
T
C
-40
85 C
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC.
MICROCIRCUITS DIVISION 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
05/16/2002
Pg. 2 of 4
53262
Short Circuit Protected Solid State Relay
__________________________________________________________________________________________
ELECTRICAL SPECIFICATIONS
T
C
= -40C to +85C, unless otherwise specified.
Parameter Symbol
Min.
Typ.*
Max.
Unit
s
Test Conditions
Notes
INPUT CHARACTERISTICS
Input Forward Voltage
V
F
2.0 2.7 3.8 VDC
I
F
= 8 mA
Input Reverse Breakdown Voltage
V
R
6
20
VDC I
R
= 10
A
7
OUTPUT CHARACTERISTICS
Output On-Resistance
R
(ON)
0.8 1.2
I
F
= 8 mA, I
O
= 0.5 A
Pulse width = 10 ms
Duty cycle
10%
6
Output Leakage Current
I
O (OFF)
250
A
V
F
= 0.6 VDC
V
O
= 400 VDC
6
Turn-On Time
t
ON
8 ms
Turn-Off time
t
OFF
2 ms
Rise Time
t
R
6 ms
Fall Time
t
F
1 ms
I
F
= 8 mA
I
O
= 0.5 A
Pulse width = 10 ms
Duty cycle
10%
3 &
Figure 2
Over-current Limit
I
CL
1.1
4.5 A
Over-current Trip Time
t
CL
1 ms
V
O
= 54 VDC
R
L
= 12
4
Peak Short Circuit Current
I
SC(PK)
15 20 A
Short Circuit Shut Down Time
t
SC
100
s
Short-while-on
@ T
C
= 25C
5 & 7
COMMON CHARACTERISTICS
Input-Output Leakage Current
I
I-O
1
A
RH
45%, t = 5 s
V
I-O
= 1000 VDC
T
C
= 25C
1 & 2
Thermal Resistance (junction-case)
JC
18.5
C/W
7
* Typical values are at T
C
= 25C
Notes:
1. Input pins shorted together and output pins shorted together.
2. Input -output potential applied momentarily, not a steady state operating condition.
3. Rise time is measured from 10% to 90% of load current (90% to 10% of V
O
). Fall time is measured from 90% to
10% of load current (10% to 90% of V
O
). Guaranteed but not tested.
4. The minimum over-current limit occurs at Tc of 85C. The maximum over-current limit occurs at Tc of -40C.
5. Use 0.25 ohm sense resistor for monitoring the peak short circuit current.
6. The user should apply the appropriate transient suppression technique to the output terminals of the relay when
the loads are inductive enough to generate voltage spikes.
7. Guaranteed but not tested.
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC.
MICROCIRCUITS DIVISION 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
05/16/2002
Pg. 3 of 4
53262
Short Circuit Protected Solid State Relay
___________________________________________________________________________________________
Figure 1 Block Diagram (Low-side Switch shown)
R
S
+V
C
+DC SUPPLY
R
LOAD
GND
OUTPUT GND
1
4
2
3
Figure 2 Switching Test
PULSE
GENERATOR
50%
100
MONITOR
(100mV/mA)
90%
ON
10%
OFF
MONITOR
2
50%
3
= 25 pF
(INCLUDES PROBE AND
FIXTURE CAPACITANCE)
1
4
R
V
L
VO
CL
LOAD
F
I
F
I
O
V
t
Z =50
O
F
t = t = 10ns
R
t
90%
t
R
t
F
10%
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC.
MICROCIRCUITS DIVISION 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
05/16/2002
Pg. 4 of 4
53262
Short Circuit Protected Solid State Relay
Figure 3 Typical Peak Short Circuit Current (short-while-on)
Figure 4 - Case Outline
1.75
1.00
(.80)
.40 (MAX)
1.500
.125
.300
.100
.200
.850
.053 TYP
.25
2X.166 THRU
.400
.10
Figure 5 - Pin Assignment
PIN SYMBOL FUNCTION
1
+ IN
Control Input
2
- IN
Control Input Return
3
- OUT
Output Return
4
+ OUT
Output
Note: Dot indicates pin 1. Pins are numbered from left to right viewing from the top view.
-1
1
3
5
7
9
11
13
15
-150
-100
-50
0
50
100
150
200
250
Time, microseconds
Cu
r
r
e
n
t,
A
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