EL817(S)(TA)-V

Output Type:	Transistor
Supplier Device Package:	4-SMD
Package / Case:	4-SMD, Gull Wing
Mounting Type:	Surface Mount
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):	600% @ 5mA
Current Transfer Ratio (Min):	50% @ 5mA
Voltage - Isolation:	5000Vrms
Number of Channels:	1
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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Introduction

Optoisolators, sometimes referred to as optocouplers, are electronic components that transfer electrical signals from one side of an isolation gap to the other. Primarily, optoisolators are used to prevent high-voltage spikes on the input side from reaching the output side. In this article, we will discuss the EL817(S)(TA)-V, which is a type of optoisolator designed for transistor and photovoltaic output, and explain the device’s application field and working principle.

EL817(S)(TA)-V Device Overview

The EL817(S)(TA)-V device is an optoisolator component that is designed for both transistor and photovoltaic output. The device consists of an infrared LED and a phototransistor, encapsulated in a 5-pin dual-in-line (DIP) package. It operates within a wide temperature range, from -40℃ to 110℃. The device can withstand surge currents up to 10kV/μs.

Applications and Working Principle

The EL817(S)(TA)-V device is typically used in applications such as industrial systems, communication systems, and medical equipment. In additions to protecting devices from high-voltage spikes, the optoisolator ensures electrical isolation and ensures a minimum conduction of energy between the two sides of this gap.The working principle of the EL817(S)(TA)-V optoisolator is based on a simple concept. When a voltage is applied to the anode of the infrared LED, current begins to flow through the LED. As a result, the LED will emit light, which is detected by the phototransistor. This causes the phototransistor to turn on, allowing the current to flow through the device. The current will then flow through the emitter of the phototransistor, and eventually reaches the output terminal.

Conclusion

The EL817(S)(TA)-V optoisolator is a useful device for providing electrical isolation and preventing high-voltage spikes on the input side from reaching the output side. The device is designed for both transistor and photovoltaic output, and is used in applications such as industrial systems, communication systems, and medical equipment. Its working principle relies on the infrared LED emitting light when a voltage is applied, which is then detected by the phototransistor.

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