SSRs (Solid State Relays) have no movable contacts. SSRs are not very different in function from mechanical relays that have movable contacts. SSRs, however, employ semiconductor switching elements, such as thyristors, triacs, diodes, and transistors. Furthermore, SSRs employ optical semiconductors called photocouplers to isolate input and output signals. Photocouplers change electric signals into optical signals and relay the signals through space, thus fully isolating the input and output sections while relaying the signals at high speed.
SSRs consist of electronic parts with no mechanical contacts. Therefore, SSRs have a variety of features that mechanical relays do not incorporate. The greatest feature of SSRs is that SSRs do not use switching contacts that will physically wear out.
Features and Specifications
Description | Product Attribute |
Package / Case | DIP-8 |
Length | 9.78 mm |
Width | 6.4 mm |
Height | 3.9 mm |
Contact Form | SPST (1 Form A) |
Control Voltage Range | 1.25 VDC |
Input Current | 50 mA |
Input to Output Isolation Method | Optocoupler |
Isolation Voltage | 1.5 kV |
Load Current Rating | 100 mA |
Load Voltage Rating | 400 VAC, 400 VDC |
Maximum Operating Temperature | + 85 C |
Minimum Operating Temperature | – 40 C |
Mounting Style | PCB Mount |
Output Type | Photo MOSFET |
Packaging | Tube |
Product | Solid State Relays |
Product Type | SSR – Solid State Relays |
Series | AQW |
Termination Style | Solder Pin |
Tradename | PhotoMOS |
Type | Controller |
Applications
- Used for controlling multiple circuits
- Isolating low voltage from high voltages, Automatic changeovers
- Electrical appliances ON/OFF and numerical-controlled machinery
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