Output Type:	Transistor with Base
Supplier Device Package:	8-SMD
Package / Case:	8-SMD, Gull Wing
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 85°C
Vce Saturation (Max):	--
Current - DC Forward (If) (Max):	25mA
Voltage - Forward (Vf) (Typ):	1.68V
Current - Output / Channel:	8mA
Voltage - Output (Max):	20V
Series:	--
Input Type:	DC
Rise / Fall Time (Typ):	--
Turn On / Turn Off Time (Typ):	2µs, 2µs (Max)
Current Transfer Ratio (Max):	--
Current Transfer Ratio (Min):	5% @ 16mA
Voltage - Isolation:	5000Vrms
Number of Channels:	1
Part Status:	Active
Packaging:	Tube

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Optoisolators - Transistor, Photovoltaic Output

Overview

Optoisolators, also known as opto-isolators, are components that use light to transfer electrical signals between two circuits, forming a type of digital isolation barrier. Optoisolators are useful in applications where the two electrical devices involved must remain completely isolated from each other. One of the most commonly used optoisolators is the HCNW135#300, which utilizes a photovoltaic (PV) output mechanism. This article will discuss the general application field and working principle of the HCNW135#300.

Application Field

The HCNW135#300 is a 5.0 or 5.6 mm wide optoisolator that provides a 4 kVrms isolation voltage. It is resistant to moisture, shock, and temperature extremes and has a long useful life of up to 30 years. It is widely used in industrial, consumer, and communication electronics, as well as medical equipment. It can be used in applications such as signal line protection, solid-state relays, analog to digital converters, and current loop isolation.

Working Principle

The HCNW135#300 is a transistor output optoisolator. It consists of a Silicon PIN photo diode for receiving signal input, a base drive transistor, and an insulated package. The PIN diode is illuminated when input current is applied. This generates a current flowing into the base of the integral drive transistor, which amplifies the signal and drives the output transistor. The output transistor switches on and off depending on the amount of base current, allowing the signal to be transferred between the two device circuits.

Conclusion

The HCNW135#300 optoisolator is a popular choice due to its durability, long life, and versatility. The PV output mechanism allows it to provide efficient signal transfer between two circuits. It can be used in a variety of applications, such as signal line protection, solid-state relays, analog to digital converters, and current loop isolation. The working principle of the device involves a combination of a PIN diode, a base drive transistor, and an insulated package.

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