S21ME8FY

Current - On State (It (RMS)) (Max):	100mA
Approvals:	BSI, DEMKO, SEMKO, UR, VDE
Supplier Device Package:	6-DIP
Package / Case:	6-DIP (0.300", 7.62mm), 5 Leads
Mounting Type:	Through Hole
Operating Temperature:	-30°C ~ 100°C
Current - DC Forward (If) (Max):	15mA
Voltage - Forward (Vf) (Typ):	1.2V
Turn On Time:	50µs (Max)
Current - Hold (Ih):	3.5mA
Series:	--
Current - LED Trigger (Ift) (Max):	3mA
Static dV/dt (Min):	500V/µs
Voltage - Off State:	800V
Voltage - Isolation:	5000Vrms
Number of Channels:	1
Zero Crossing Circuit:	Yes
Output Type:	Triac
Part Status:	Obsolete
Packaging:	Tube

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Optoisolators - Triac, SCR OutputThe S21ME8FY is an opto-isolator device from Fuji Electric that maintains electrical isolation between its input and output circuits. It is an opto-electric component specifically designed to control electrical interfaces such as gate drivers, motor controllers, and switchyard controllers. It functions as an electrical barrier between a high-voltage system and a low-voltage control system, protecting the control circuitry from damage or interference caused by electrical surges in the high-voltage system.The S21ME8FY has a dual output type of Triac and SCR output, designed for applications such as motor control, line frequency inverter control, and electric vehicle control. Both the Triac and SCR outputs have a zero crossing point accuracy of 5% and are designed with a current rating of 5 A and an Ui voltage rating of 1000 Vrms. It also has a low breakdown voltage of 600 V total insulation.The S21ME8FY\'s traditionally isolated output is perfect for providing electrical isolation for noisy switching applications such as motor controls, adjustable speed drives, switching power supplies, electrical charging systems, outdoor sign control, digital logic, and automation equipment. Its dual output type is also useful for higher current applications, such as motor controllers, high-voltage switches, line frequency inverter control, and electric vehicle control.The S21ME8FY features an internal transistor that carries the control current, making its operation safe and reliable, and allowing it to be used in a variety of industrial applications. Its Triac output is designed with a low power consumption and the SCR output is designed for low EMI/RFI emissions, making it suitable for applications with high levels of electromagnetic noise.The S21ME8FY uses a photoelectric coupling principle to transfer control signals between its input and output circuits. A combination of a light-emitting diode (LED) and a phototriac is used to transfer electrical isolation between the input and output circuits. The LED is driven by the control signal, creating a light that carries the control signals between the two circuits. The phototriac is the device that detects the signal from the LED and outputs a proportionate electrical current to the system.The S21ME8FY is designed with a safety factor of 10, meaning that it will not operate at or exceed temperatures outside of its specified range. It is also designed with a response time of less than 100 µs, and features overvoltage protection on both output sides for applications requiring higher energy loads. In addition, it has an improved temperature coefficient that adjusts for increased radiation and ambient temperatures.The S21ME8FY is an excellent choice for a wide range of industrial applications due to its electrical isolation, low power consumption, low EMI/RFI emissions, temperature coefficient, safety factor, and response time. Its opto-isolator design and dual output type make it perfect for applications such as motor control, line frequency inverter control, and electric vehicle control. Its superior performance and reliability make it an ideal choice for any system needing an electrical barrier between a high-voltage system and a low-voltage control system.

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