HCNW4503-000E

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The HCNW4503-000E is an optoisolator, in particular, a Transistor, Photovoltaic Output device. It is the smallest version of the HCNW4500 series, from Avago Technologies, and its use is mainly to provide isolation between input and output signals. This isolator has a wide range of application fields in the industrial, consumer, medical, and military sectors.

The HCNW4503-000E consists of a diode-based LED optically coupled to a silicon phototransistor, in its 4-pin DIP package. It features high isolation voltage of up to 5kV, low saturation voltage of less than 0.25V, and fast switching times, from 7µs (for TTL input) to 10µs (for CMOS input). Its accuracy is ±20%, its output rise and fall times are 0.6 and 3.3 µs, respectively, and the power dissipation is graded from 0.35 to 60mW.

The working principle of the HCNW4503-000E is to provide electrical and optical isolation between two parts of a circuit. Here, the diode-based LED optically couples the – input signal, from the input circuit, with the – output signal, from the output circuit, through the IR radiation emitted by the LED. When a brief input current passes through the LED, the amount of radiation increases, which, as a consequence, modulates the output current in the phototransistor.

The HCNW4503-000E is ideal for numerous applications that require electrical isolation, like industrial control systems, programmable logic controllers (PLCs), signal transmission, AC/DC power lines, and instrumentation. For example, in the industrial and consumer sectors, it is used in medical electronics products, office automation devices, and other consumer products. In the medical and military fields, it is used in medical electronics and military grade radiation-tolerant modules, respectively.

In conclusion, the HCNW4503-000E is a 4-pin DIP optoisolator that belongs to the HCNW4500 series, from Avago Technologies. It operates as a Transistor, Photovoltaic Output, and is used in numerous sectors, including industrial and consumer fields, medical electronics, office automation products, and military grade radiation-tolerant applications. Its working principle consists in providing electrical and optical isolation between two parts of a circuit, by optically coupling the – input signal with the – output signal through an IR signal.

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