鈥?/div>
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
0.780 Max
.
0.120 Max
.
DIONICS INC
.
DIH-1378
xxxx
0.040
0.270 Max.
0.300 Min
.
0.020
0.100
0.046 Typ
.
0.010
12/2001
1
2
