DIONICS, INC.
Phone: (516) 997-7474
65 Rushmore Street
Westbury, NY 11590
Fax: (516) 997-7479
Website: www.dionics-usa.com
DIH-128 Power MOSFET SPST Photovoltaic AC-DC N/O Relay
Features:
Applications:
Ø Low Level Logic Compatibility
Ø Replacement of Mechanical Relays
Ø Optical Isolation to 400VDC
Ø Low On Resistance, Low Offset Voltage
Ø Low Off-State Leakage Current.
Ø Motor Control & Power Control
Ø Aircraft Flight Control Systems
Ø A.T.E. (Automatic Test Equipment)
Ø Load Control From Processor I/O Ports
Ø High-side DC Power Switching
Ø Power Supply Circuits
Ø High Speed Switching Response.
Ø High Transient Immunity, No False Turn on
Ø Hermetically Sealed 6-Pin Mini DIP Foot Print
Ø Designed To Meet MIL-R-28750
Ø Medical Electronics
Ø Y-Level MIL-Screening Available (DIH-128Y)
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, Voc, proportional to the LED input current. This Voc , 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 Voc 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
* Package Lay out:
0.420
6
5
4
6
5
4
PV
LED
Enh.
Enh.
1
2
DIONICS
DIH-128
KOVAR, AU - PLATED
KOVAR, NI - PLATED
GLASS
XXXX
1
2
3
0.020
v Pin Designation
Pin number Function
1
Input +
Input -
Case
Output Drain
Output Common Source
Output Drain
2
3
4
5
6
0.020
0.100
0.018 Typ.
12/2001