DIONICS, INC.
Phone: (516) 997-7474
65 Rushmore Street Fax: (516) 997-7479
Westbury, NY 11590 Website:
www.dionics-usa.com
DIH-128 Power MOSFET SPST Photovoltaic AC-DC N/O Relay
Features:
Low Level Logic Compatibility
Optical Isolation to 400VDC
Low On Resistance, Low Offset Voltage
Low Off-State Leakage Current.
High Speed Switching Response.
High Transient Immunity, No False Turn on
Hermetically Sealed 6-Pin Mini DIP Foot Print
Designed To Meet MIL-R-28750
Y-Level MIL-Screening Available (DIH-128Y)
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-128 is a State-of-the-Art Photovoltaic Solid State Relay designed for A.T.E. applications where speed, on-
resistance and leakage current are critical. These photovoltaic relays incorporate an infrared LED input, a photovoltaic
(PV) diode array including a unique turn-off circuit connected to the gates of a pair of high voltage MOSFETs as output.
The photovoltaic diode array is a series-connected group of photosensitive diodes, which are electrically isolated from,
but optically coupled to, the input LED. Input/Output isolation is rated at 400 VDC.
When activated, the LED emits infrared light toward the photovoltaic diode array, which then responds with a self-
generated open circuit voltage, V
oc
, proportional to the LED input current. This V
oc
,
which is floating and completely
isolated from any power supply, is applied to the Gates of the MOSFETs. At the proper value of the input LED current,
the generated V
oc
is sufficient to turn on the MOSFETs and cause the relay to conduct. The MOSFET outputs provide
thermal stability, immunity from false turn-on, and low offset voltage.
* DIH-128 Schematic
Enh.
Enh.
6
LED
PV
2
5
1
4
v
Pin Designation
Pin number
Function
1
Input +
2
Input -
3
Case
4
Output Drain
5
Output Common Source
6
Output Drain
* Package Lay out:
0.100
1
KOVAR, NI - PLATED
GLASS
0.300
XXXX
0.020
0.175
0.018 Typ.
KOVAR, AU - PLATED
DIH-128
0.020
DIONICS
6
5
0.150
0.420
4
3
0.420
2
12/2001
DIH-128: Power MOSFET SPST Photovoltaic AC-DC Relay
Electrical Characteristics (@ 25
0
C unless otherwise specified):
Wiring Configuration:
AC-DC Wiring Config. (1)
DC Wiring Config. (2)
Single MOSFET
DC Wiring Config. (3)
Parallel MOSFETs
Enh.
Enh
.
LED
PV
AC
1
2
Rload
Enh.
Enh.
LED
PV
1
2
Rload
VCC
Enh.
VCC
Enh.
LED
PV
R load
2
1
v
Input Characteristics
Condition
Min. Typ.
Max Units
Turn-On Current
100 mA load
-
5
10
mA
Turn-Off Current
1.2
-
-
V
Forward Voltage Drop
Input Current = 10mA
-
2.2
2.7
V
Input Current = 25mA
-
2.6
2.9
V
Reverse Voltage
Reverse Current = 10
A
10
-
-
V
v
Output Characteristics
AC-DC Wiring Config. (1)
DC Wiring Config. (2) DC Wiring Config. (3) Unit
Load Current (Continuous in Free Air)
600
600
1200
mA
On Resistance (I
in
= 15mA, V
op
= 30V)
1.0
0.5
0.25
Ohm
Typical Output Capacitance
(Bias Voltage= 50V)
80
160
320
pF
Off-State Leakage @ 250V
10
10
20
A
Output Offset Voltage (I
in
= 15mA)
250
250
250
V
Turn-On Time*
500
500
500
s
Turn-Off Time*
70
70
70
s
Load Voltage (I
l
= 10mA)
250
250
250
V
* I
led
= 25 mA; f = 100 Hz; Pulse Width = 100
s; I
load
= 600 mA
v Environmental Conditions:
Operating Temp. :
-20 to 85
0
C (Comm.)
(Y-Level Mil.)
-55 to 125
0
C
Storage Temp. :
-20 to 85
0
C (Comm.)
(Y-Level Mil.)
-55 to 125
0
C
Shock: (Y-Level Mil.)
50 G, MIL-STD-202
Method 202
Hermeticity:
Gross Leak (Comm.)
10
-5
atm cc/sec
(Y-Level Mil.)
Fine Leak
5x10
-8
atm cc/sec
Vibration: (Y-Level Mil.)
20G, 10 to 2000 Hz
Acceleration: (Y-Level Mil.) 100 G
Weight:
1.5 Grams
Td(on)
600 mA
10%
T(on)
Td(off)
Output
90%
90%
10%
10%
Input
0 mA
T(off)
0 mA
25 mA
90%
v
General Characteristics:
Minimum Input/Output Isolation:
400 VDC
Minimum Input/Output Resistance:
10
8
Ohms
Typical Input/Output capacitance:
10pF
Typical Thermal Resistance:
15mW/
0
C
Min. Transient Protection Capability (dv /dt ):
100V/
s
Maximum Power Dissipation @ 25
0
C:
1W
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