AQY221N2MW

Series:	PhotoMOS™ AQY
Packaging:	Tape & Reel (TR)
Part Status:	Active
Mounting Type:	Surface Mount
Circuit:	SPST-NO (1 Form A)
Output Type:	AC, DC (RF)
Voltage - Input:	1.14VDC
Voltage - Load:	0V ~ 40V
Load Current:	120mA
On-State Resistance (Max):	12.5 Ohms
Termination Style:	SMD (SMT) Tab
Package / Case:	4-SMD (0.116", 2.95mm)
Supplier Device Package:	4-SON

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Solid State RelaysSolid state relays (SSRs) are electrically operated switches which use solid-state components such as transistors, diodes and thyristors to isolate and control the opening and closing of an electrical circuit. They do not possess moving parts or require traditional mechanical operations to control current flow. As such, they can be used in very high reliability applications such as in high-speed equipment where the traditional contact relays often fail.The AQY221N2MW is a particular model of SSR which has many desirable properties. First, it has a compact design with a small footprint, making it suitable for applications where space is at a premium. Second, it has a high switching speed, providing fast on/off control in a wide range of current and voltage ranges. Finally, it has a large operating temperature range of -40°C to +85°C, and is able to withstand high-temperature environments.The AQY221N2MW features an optically-coupled input which is isolated from the load, making it ideal for situations where there is danger of interference from electrical noise. It uses a photocoupler element which converts light into electric current, allowing for a high level of insulation between the control and load circuits, and providing reliable and safe operations even in harsh environmental conditions.The AQY221N2MW is best suited for applications where a large current is required to be switched on/off in a short amount of time. This can include devices such as motor control, lighting control, fans and pumps, and voltage regulation. It also works in applications which use AC or DC loads, and can be controlled using a DC input. The optically-coupled input means that the device can be used to switch sensitive loads at high switching speeds, such as low-voltage DC or bipolar signals.The AQY221N2MW operates on the principle of optically isolated static switches. The input and output circuits are completely isolated from each other and do not require any physical contact between them. This type of switch relies on a light-emitting diode (LED) which is triggered by current running through it. The LED triggers a photodetector which then switches an SCR or transistor, which in turn switches the output current. This type of switch offers reliable operation in harsh environments and a higher level of protection against short circuits and ground faults.The AQY221N2MW is especially useful in applications where there is concern about electrical noise that could interfere with the operation of the device. The optically-coupled input provides a high degree of insulation between the control and load circuits, reducing the possibility of dangerous current leakage in the event of an electrical fault. This feature helps ensure the safe and reliable operation of the device.In summary, the AQY221N2MW is an ideal choice for applications which require a reliable, high current switch. Its optically isolated input provides a high level of insulation between the control and load circuits, and its compact design and small footprint make it suitable for situations where space is a factor. Finally, its large operating temperature range allows for reliable operation in a wide variety of environments.

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