DIONICS, INC.
65 Rushmore Street
Westbury, NY 11590
Phone: (516) 997-7474
Fax: (516) 997-7479
Website: www.dionics-usa.com
DIH-1378 Power MOSFET SPDT Photovoltaic AC-DC Relay
Features:
Two AC-DC Relays; One N/C, One N/O
Easily Connected as Single AC-DC, SPDT Relay
Fast Switching Speeds, 60
s Max.
Low Level Logic Compatibility
Immune to False Triggering
Small size, Hermetic 8-pin SIP Package
High Isolation Voltage
Designed to Meet MIL-R28750
Applications:
Replacement of Mechanical Relays
Motor Control & Power Control
Aircraft Flight Control Systems
A.T.E (Automatic Test Equipment)
Load Control From Processor I/O Ports
High-side DC Power Switching
Power Supply Circuits
Medical Electronics
Description:
The DIH-1378 is a State-of-the-Art Photovoltaic Solid State Relay designed for special AC-DC switching power
applications where package space efficiency and high reliability are critical.
Each package contains two independent relays. One is normally closed (N/C) and the other is normally opened (N/O).
Both relays are built with separate input LEDs and optically isolated power MOSFET outputs. The N/C and N/O outputs
are able to operate either AC or DC. Connecting the two inputs either in series or parallel (depending on available power
supply) will convert the (N/C), (N/O) of DIH-1378 from 2 single SPST relays into a single SPDT configuration.
Each relay, A or B, is capable of carrying 150mA AC or DC continuous current and 250mA DC peak current. Each LED
optically couples to a Photovoltaic (PV) IC chip which responds by generating a voltage. This voltage is internally
connected to the Gate and Source terminals of the output MOSFETs, thus controlling their current. The DIH-1378 is also
available screened to military specifications, as required.
Truth Table
Relay
Input Output
A
Low
Close
Pins 1-4
High
Open
B
Low
Open
Pins 5-8
High Close
Pin Designations
Pin number Function Relay
Status
1
Input +
2
Input -
A
Normally
3
Output (N/C)
Close
4
Output
5
Input +
6
Input -
B
Normally
7
Output (N/O)
Open
8
Output
* Package Layout:
Weight 1.5 Grams
0.046 Typ
.
0.780 Max
.
0.010
0.270 Max.
0.120 Max
.
DIONICS INC
.
xxxx
0.100
0.040
DIH-1378
0.020
0.300 Min
.
12/2001
DIH-1378: Power MOSFET SPDT Photovoltaic AC-DC Relay
Electrical Characteristics (@ 25
0
C unless otherwise specified):
v
Relay A: Normally Close (N/C)
v
Relay B: Normally Open (N/O)
v
Input Characteristics
(Per Relay)
Symbol
Parameter
Min.
Typ. Max. Unit
I
in
Input Current
5.0
20.0
30.0 mA
V
in
Input Voltage Drop
1.3
1.5
V
V
rev.
Reverse Voltage
10.0
V
V
on
On State Voltage (A)
On State Voltage (B)
3.5
1.2
V
V
V
off
OFF State Voltage (A)
OFF State Voltage (B)
3.5
1.2
V
V
LED
PV
Enh.
10 Mohms
Dep.
2
LED
PV
5
DIH-1378 Schematic
Dep.
3
B
10 Mohms
A
100 Ohms
Relay
6
4
7
Relay
Enh.
100 Ohms
8
1
v
Output Characteristics
Symbol
Parameter
Relay
Typ.
Max.
Unit
Condition
I
load
Load Current
A
150 / 250
mA
Continuous / Peak
R
on
On Resistance
A
8
20
I
in
=20 (mA); V
op
=80 (V)
B
8
20
I
in
=20 (mA); V
op
=80 (V)
V
op
Operating Voltage
A or B
30
80
V
AC or DC
BV Breakdown Voltage
A or B
100
V
DC
T
on
Turn-On Time
A
15
60
s
V
in
=3.5V, P.W* = 100
s; V
op
=30V
B
15
60
s
V
in
=3.5V, P.W =100
s; V
op
=30V
T
off
Turn-Off Time
A
40
60
s
V
in
=3.5V, P.W =100
s; V
op
=30V
B
40
60
s
V
in
=3.5V, P.W =100
s; V
op
=30V
V
iso
Input-Output Isolation
A or B
400
VDC
P
Maximum Power Dissipation
A or B
400
mW
PW*: Pulse Width.
v
Timing Diagram
Td(on)
Vop
10%
T(on)
Td(off)
Output
90%
90%
10%
10%
Input
0V
T(off)
0V
5V
90%
v
Environmental Ratings:
Storage Temperature: -25
0
C to +125
0
C
Constant Acceleration: 5000G
Hermeticity: + Gross 1x10
-5
atm cc/sec
+ Fine 5 x 10
-8
atm cc/s **
** When screened to MIL-Specs.
12/2001
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