A1458 Optocoupler Datasheet |best| May 2026

): Typically 2,500 to 5,000 Vrms. This is the "survival" rating for the gap between input and output.

Used in the feedback loop to regulate output voltage while keeping the high-voltage AC side isolated from the DC output.

The A1458 optocoupler is a workhorse in the electronics industry, offering a perfect balance of isolation voltage and switching reliability. Whether you are building a DIY home automation system or a professional industrial controller, understanding the specs in the A1458 datasheet ensures your circuit remains safe and efficient. a1458 optocoupler datasheet

The A1458 is an optoisolator that uses light to transfer electrical signals between two isolated circuits. It consists of a Gallium Arsenide (GaAs) infrared LED on the input side and a high-gain phototransistor or integrated detector on the output side.

(Note: Always verify the pinout against the specific manufacturer's logo on the chip, as internal configurations can vary between 4-pin and 8-pin versions.) Practical Applications ): Typically 2,500 to 5,000 Vrms

Optocouplers have a "Rise Time" and "Fall Time." If you are sending high-speed PWM signals (above 10kHz), check the datasheet for the switching speed to ensure the signal doesn't become distorted.

This is the ratio of output current to input current. For the A1458, this is generally between 50% and 600%, categorized into different "ranks" (e.g., Rank L, Rank A). Pinout Configuration The A1458 optocoupler is a workhorse in the

In the world of electronics, protecting sensitive control circuits from high-voltage spikes is a top priority. One of the most reliable ways to achieve this isolation is through an optocoupler. While many engineers are familiar with the standard 4N25 or PC817 series, the (often part of the HCPL-1458 or similar proprietary series) is a specialized component designed for specific industrial and signal-processing tasks.

The A1458 is most commonly found in a or an SMD equivalent. Pin 1: Anode (LED Input) Pin 2: Cathode (LED Input) Pin 3: Emitter (Phototransistor Output) Pin 4: Collector (Phototransistor Output)