DIONICS, INC.
65 Rushmore Street
Westbury, NY 11590
Phone: (516) 997-7474
Fax: (516) 997-7479
Website: www.dionics-usa.com
DIH-129, DIH-149, DIH-169 Power MOSFET N/O SPST
Photovoltaic AC-DC Relay
Features:
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Low Level Logic Compatibility
Thermal Protection With Hysteresis
Optical Isolation to 650VAC
Low On Resistance, Low Offset Voltage
Meet 28V DC System Surge and Spike
Requirements of Mil STD-704.
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Current Limiting
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Designed To Meet MIL-R-28750
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Y-Level MIL Screening Available
Description:
DIH-129, DIH-149 and DIH-169 are State-of-the-Art AC-DC Photovoltaic (PV) Solid State Relays designed for power
management applications where speed, power, on-resistance and leakage current are critical. These PV relays incorporate
an infrared LED input, a PV diode array connected to the gates of 2 pairs of power MOSFETs as output and a unique
turn-off circuit. The PV diode array is 2 series-connected groups of photosensitive diodes, which are electrically isolated
from, but optically coupled to the input LEDs. When activated, each LED emits infrared light toward the PV 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 power 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-129, DIH-149 and DIH-169 are specific PV relays that are produced from one basic semi-custom design. Options,
such as: current limiting, thermal protection, short circuit protection, status indication, constant current input or ultra fast
switching may be incorporated into customized versions of these relays
Applications:
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28V DC Aircraft Power Control &
Distribution
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Motor Control & Power Control
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Aircraft Flight Control Systems
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A.T.E. (Automatic Test Equipment)
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Load Control From Processor I/O Ports
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High-side DC Power Switching
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Power Supply Circuits
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Medical Electronics
* Equivalent Schematic:
* Package Layout:
1.520
1.000
1.000
5
PV
LED
1
4
2
Enh.
3
0.156 DIA
Thru 2 Pls
Enh.
DIONICS
DIH-129
xxxx
45
0
0.500
0.120
0.290
0.050
Pin designation
1
2
3
4
5
6
Pin number
Input + Input - Output Common Output Case
Function
Drain + Source - Drain +
0.212
0.125
0.040 DIA, 6 Pls
1.870 Max
08/2001
1
2
