PC3SD21YXPLH

Series:	--
Part Status:	Discontinued at Digi-Key
Output Type:	--
Voltage - Isolation:	--
Static dV/dt (Min):	--
Current - LED Trigger (Ift) (Max):	--
Current - Hold (Ih):	--
Turn On Time:	--
Voltage - Forward (Vf) (Typ):	--
Operating Temperature:	--
Mounting Type:	--
Package / Case:	--
Supplier Device Package:	--
Approvals:	--

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Optoisolators - Triac, SCR Output

Optoisolators - Triac, SCR output (PC3SD21YXPLH) are used for isolating a load from the control circuit, and also for reducing interference by electromagnetic radiation. They provide highly efficient isolation, and are especially suitable for applications requiring constant power to a load, where traditional optocouplers would not be suitable. The PC3SD21YXPLH is a 3-channel, optically coupled Solid State Relay (SSR) with an output circuit that is suitable for controlling a triac or silicon controlled rectifier (SCR). It has a high voltage drive, and is suitable for applications with AC output voltages ranging from 110 V to 690 V. It also has a current rating of up to 6A, which makes it suitable for a wide range of applications.The PC3SD21YXPLH is a four-terminal device, and it works by detecting the changes in the input voltage (AC) and shining an LED light source, thus forming an electronic optical link between the input and the output. The light energy is directed to the transistor output, which then turns ON or OFF the triac or SCR in the output depending on the state of the input. This process of isolation and detection can provide highly efficient isolation.In terms of applications, optoisolators - triac, SCR output (PC3SD21YXPLH) are widely used in various applications such as solar inverters, furniture protection, metering, HVAC control systems and more. They are also used in home appliances for controlling currents for motors, batteries and even power circuits.In terms of working principle, the PC3SD21YXPLH optoisolator works in two steps. The first step is the detection of the change in the input voltage. When the input voltage reaches a certain level, an LED light source is turned on and directed towards the transistor output. In the next stage, the transistor output will turn ON or OFF the triac or SCR in the output. When the triac or SCR is turned ON, it will act as a switch and will cause the current flow to the load to vary accordingly. On the other hand, when the triac or SCR is turned OFF, the current flow to the load will stop. Another important characteristic of the PC3SD21YXPLH optoisolator is its response time. It’s response time depends on the input voltage, but typically it can switch in as little as 2.5ms, which makes it suitable for applications requiring fast response time.In conclusion, optoisolators - Triac, SCR output (PC3SD21YXPLH) offer value in various applications, such as solar inverters, furniture protection, metering, HVAC control systems etc. They offer high isolation efficiency, and can also response quickly when the input voltage changes.

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