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Descriptions

A solid state relay (SSR) is an electronic switching device that switches on or off when an external voltage (AC or DC) is applied across its control terminals. It serves the same function as an electromechanical relay, but has no moving parts and therefore results in a longer operating lifetime. SSRs consist of a sensor which responds to an appropriate input (control signal), a solid-state electronic switching device which switches power to the load circuitry, and a coupling mechanism to enable the control signal to activate this switch without mechanical parts. The relay may be designed to switch either AC or DC loads.

Packaged solid-state relays use power semiconductor devices such as thyristors and transistors to switch currents up to around a hundred amperes. Solid-state relays have fast switching speeds compared with electromechanical relay and have no physical contacts to wear out. Users of solid-state relays must take into consideration an SSR's inability to withstand a large momentary overload the way an electromechanical relay can, as well as their higher "on" resistance.

 

Specifications

AttributeValue
Minimum Load Current0.55 A
Maximum Load Current550 mA
Mounting TypePCB Mount
Maximum Load Voltage60 V
Minimum Control Voltage1.14 V
Maximum Control Voltage1.5 V
Contact ConfigurationSPNO
Terminal TypeThrough Hole
Output DevicePhotoMOS
Package StyleDIP4
Maximum Turn On Time4 ms
Dimensions4.78 x 6.4 x 3.2mm
Depth6.4mm
Length4.78mm
Maximum Operating Temperature+85°C
Off State Leakage Current1 μA
Control Voltage Range1.14 → 1.5 V
Height3.2mm
Load Voltage Range60V
Minimum Operating Temperature-40°C
Operating Temperature Range-40 → +85°C

AQY212EH SOLID STATE RELAY, 60V, 550mA SMD

USh1,500Price