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. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
01/30/01
PRELIMINARY DATA SHEET
53246
RADIATION TOLERANT
40VDC 2A SOLID STATE RELAY
Mii
HYBRID MICROELECTRONICS
PRODUCTS DIVISION
Features:
This Design Tested to 100 krad (Si) Total Dose
Hermetically Sealed in Surface Mount Package
Low
On-resistance
2A Continuous Output Current
Operation over Full Military Temperature
Range -55C to +125C
Optically
Coupled
Input/Output Isolation Tested to 1000 VDC
Shock and Vibration Resistance
Applications:
Satellite/Space
Systems
Military/High Reliability Systems
Power
Distribution/Switching
Solenoid
Driver
Stepper Motor Driver
Switching
Heaters
DESCRIPTION
The 53246 is a SPST, radiation tolerant, DC solid-state relay (SSR) designed for military and space applications.
This light-weight device is resistant to damage from severe shock and vibration, and is immune to contact related
problems inherent in electro-mechanical relays. The SSR is enclosed in a hermetic metal package to ensure
reliability in harsh environments. Effective isolation of 1000 VDC between control and load circuits is achieved
through the use of optical coupling.
Functionally, the device operates as a single-pole single-throw, normally open (1 Form A) DC solid-state relay. The
SSR is actuated by an input current of 5 to 15 mA, which can be supplied from standard logic types such as a
standard TTL device. Output is provided by a power MOSFET exhibiting very low R
DS(ON)
and capable of carrying a
continuous current of 2 amperes. This design has demonstrated it will function with minimal degradation after
exposure to 100 krad (Si) total dose. The 53246 is available in a variety of quality levels from COTS to class K
including any custom screening requirements. The basic data sheet part is environmentally screened to H level in
accordance with Table C-IX of MIL-PRF-38534.
ABSOLUTE MAXIMUM RATINGS
Output Voltage ....................................................................................................................................................... 50 VDC
Continuous Output current ............................................................................................................................................2 A
Peak Output Current
(1)
........................................................................................................................................19 A
Storage Temperature Range ..................................................................................................................-65C to +150C
Operating Junction Temperature............................................................................................................-55C to +150C
Lead Solder Temperature, for 10 seconds .............................................................................................................300C
Continuous Input Current .........................................................................................................................................20 mA
Peak Input Current
(2)
............................................................................................................................................. 100 mA
Reverse Input Voltage............................................................................................................................................. 6 VDC
Power Dissipation
(3)
...................................................................................................................................................20 W
Linear Derating Factor....................................................................................................................................... 0.15 W/C
WEIGHT:
3.7 grams (typical
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. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
01/30/01
Preliminary Data Sheet
53246
Radiation Tolerant 40VDC 2A Solid State Relay
RECOMMENDED OPERATING CONDITIONS:
Parameter
Symbol
Min.
Max.
Units
Output Voltage
V
O (OFF)
40
VDC
Continuous Output Current
I
O (ON)
2
A
Input Current (on)
I
F (ON)
5
15
mA
Input Voltage (off)
V
F (OFF)
0
1
VDC
Operating Case Temperature
T
C
-55
125
C
ELECTRICAL SPECIFICATIONS (Pre-Irradiation)
T
C
= -55C to +125C unless otherwise specified
Parameter
Symbol
Min.
Typ.*
Max.
Unit
s
Test Conditions
Notes
Output On-Resistance
R
(ON)
.032
.060
I
F
= 15 mA
I
O
= 1 A
Output Leakage Current
I
O (OFF)
<1
250
A
V
F
= 1 VDC
V
O
= 50 VDC
Input Forward Voltage
V
F
3.10
3.75
4.20
VDC
I
F
= 15 mA
Input Reverse Breakdown Voltage
V
R
6
40
VDC
I
R
= 10
A
Input-Output Leakage
I
I-O
1
A
RH
45%, t = 5 s
V
I-O
= 1000 VDC
T
C
= 25C
4, 5
Turn-On Time
t
ON
2.8
8.0
ms
Figures
3, 4
Turn-Off time
t
OFF
61
80
ms
Figures
3, 5
Rise Time
t
R
2.1
6.0
ms
Fall Time
t
F
31
50
ms
I
F
= 15 mA
I
O
= 10 A
V load = 40 VDC
Pulse width = 10 ms
Duty cycle
1%
6,
Figure 3
Thermal Resistance (junction-case)
JC
5.5
C/W
Output Off-Capacitance
C
O (OFF)
1.8
nF
V
O
= 28 VDC
f = 1 MHz
Input Capacitance
C
IN
27
pF
V
F
= 0 V
f = 1 MHz
Input-Output Capacitance
C
I-O
3.8
pF
V
I-O
= 0 V
f = 1 MHz
4
* All typical values are at T
C
= 25C
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. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
01/30/01
Preliminary Data Sheet
53246
Radiation Tolerant 40VDC - 2A Solid State Relay
Notes:
1. Non-repetitive, pulse width
10 ms, T
C
= 25C (see Figure 6).
2. Non-repetitive, pulse width
100 s, T
C
= 25C.
3. Case Temperature T
C
= 25C (see Figure 7).
4. Input pins shorted together and output pins shorted together.
5. Input-output potential applied momentarily, not an operating condition.
6. 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
).
CAUTION:
Care should be taken so as not to exceed the maximum power dissipation and maximum junction temperature
when repetitively switching loads.
INPUT
OUTPUT
ON
ON
OFF
OFF
Figure 1. Truth Table
Figure 1. Terminal Connections
R
LOAD
+V
C
3
2
1
-V
C
4
+DC SUPPLY
OUTPUT GND
TOP VIEW
R
S
Figure 2. Terminal Connections
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. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
01/30/01
Preliminary Data Sheet
53246
Radiation Tolerant 40VDC 2A Solid State Relay
PULSE
GENERATOR
50%
MONITOR
90%
ON
10%
OFF
MONITOR
2
50%
3
(INCLUDES PROBE AND
FIXTURE CAPACITANCE)
1
4
R = 20
V = 40 V
L
VO
CL
LOAD
F
I
F
I
O
V
t
Z = 50
O
R
t = t = 10ns
F
t
(100mV/mA)
= 25 pF
100
Figure 3. Switching Waveforms and Test Circuits
Figure 4. Turn-on Time vs. Case Temperature Figure 5. Turn-off Time vs. Case Temperature
for Different Values of I
F
(typical data).
with I
F
= 5 to 15mA (typical data).
0
5
10
15
20
25
-55
-25
5
35
65
95
125
Temperature (C)
T
u
rn
-o
n
T
i
m
e
(m
s
)
5mA
10mA
15mA
0
20
40
60
80
-55
-25
5
35
65
95
125
Temperature (C)
T
u
rn
-o
f
f
T
i
m
e
(m
s
)
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. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
01/30/01
Preliminary Data Sheet 53246
Radiation Tolerant 40VDC - 2A Solid State Relay
Figure 6. Maximum Non-repetitive Output Current Figure 7. Maximum Average Output Power
vs. Case Temperature (pulse width
10 ms). Dissipation vs. Case Temperature.
TOTAL DOSE TEST RESULTS
Disclaimer: The data of 3 representative units irradiated in Cobalt-60 chamber is only typical of one lot of
solid state relays. Micropac does not guarantee performance of its SSR to these radiation levels. Individual
lots have to be screened to guarantee the performance.
Figure 8. Turn-On Time vs Total Dose Figure 9. Rise Time vs Total Dose
at V
out
= 28 V, R
load
= 35
, at V
out
= 28 V, R
load
= 35
,
I
in
= 15 mA, 10% duty cycle. I
in
= 15 mA, 10% duty cycle.
0
2
4
6
8
10
0
50
100
Total Dose, krad (Si)
T
u
rn
-O
n
T
i
m
e
, m
s
0
2
4
6
8
10
0
50
100
Total Dose, krad (Si)
R
i
s
e
T
i
m
e
, m
s
0
5
10
15
20
-55 -25
5
35
65
95 125
Temperature (C)
M
a
x
i
mu
m P
e
a
k
O
u
t
p
u
t
C
u
rre
n
t
(A
)
0
10
20
30
40
-55 -25
5
35
65
95
125
Temperature (C)
M
a
x
i
mu
m A
v
e
r
a
g
e
P
o
w
e
r
Di
s
s
ip
at
io
n (
W
)
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