EL817(M)(B)

Output Type:	Transistor
Supplier Device Package:	4-DIP
Package / Case:	4-DIP (0.400", 10.16mm)
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 110°C
Vce Saturation (Max):	200mV
Current - DC Forward (If) (Max):	60mA
Voltage - Forward (Vf) (Typ):	1.2V
Current - Output / Channel:	50mA
Voltage - Output (Max):	35V
Series:	--
Input Type:	DC
Rise / Fall Time (Typ):	4µs, 3µs
Turn On / Turn Off Time (Typ):	--
Current Transfer Ratio (Max):	260% @ 5mA
Current Transfer Ratio (Min):	130% @ 5mA
Voltage - Isolation:	5000Vrms
Number of Channels:	1
Part Status:	Active
Packaging:	Tube

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EL817 (M)(B) Application Field and Working PrincipleOptoisolators - Transistor, Photovoltaic Output is one of the most commonly used devices in the world of electronics. They are used in a variety of different applications and are capable of safely isolating signals between two circuits. The EL817 series of optoisolators have been designed specifically to meet the standards of various industries, offering reliable performance.The EL817 series is an optoisolator device that utilizes a photovoltaic output and is comprised of a light-emitting diode (LED) and a phototransistor. The input circuit of the EL817 is driven by the forward current supply connected to the anode and cathode of the LED. When the LED is excited with a minimum forward current of at least 5mA, it generates light initially which is projected onto the phototransistor in the output section of the optoisolator. The phototransistor is then activated and can source or sink a maximum current of 200mA.The main applications of the EL817 series optoisolators are in electronics and instrumentation. These devices can provide galvanic isolation between two circuits to protect equipment from electrical noise or spikes in voltage. They are also commonly used in telecommunications, medical systems, test and measurement systems, and in industrial process controls.The EL817 series has a number of important features that enable reliable performance. These include an integrated reverse protection diode which prevents a current spike due to a transient voltage reversal across the LED, and a under-voltage lockout function that disables the optoisolator when the supply voltage drops below a certain level. It also features an operating temperature range of between -30°C and +90°C.The EL817 series is also available in a variety of different packages, including a 2-Lead SIP, an SOP-8 Package, a SOT-23 package, and a T1 package. These packages are all designed to provide enhanced electrical performance and thermal stability in a wide range of operating conditions.The EL817 series is ideal for a variety of applications, offering reliable, high-performance isolation of two circuits. It is capable of providing a high degree of sound isolation from electrical noise and AC power line. The device is also suitable for use in harsh environments where it will remain operational even when subjected to extreme temperatures and vibration.In conclusion, optoisolators – transistor, photovoltaic output are one of the most widely used electronic devices for providing isolation between two circuits. The EL817 series offers a range of important features such as reverse protection, under-voltage lockout, and an operating temperature range of -30°C to +90°C. It is ideal for a variety of different applications, including medical systems, telecommunications, and industrial process controls, offering reliable performance in a wide range of operating conditions.

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