A1458 Optocoupler Datasheet 【RECOMMENDED — 2024】

The A1458 is a . It consists of a Gallium Arsenide (GaAs) infrared emitting diode, optically coupled to a silicon NPN phototransistor. The component is housed in a compact, industry-standard DIP-4 (Dual Inline Package) and is also available in surface-mount (SMD) variants.

What are the and output voltage levels of your system?

Before diving into electrical characteristics, let us establish the pinout. The A1458 is typically housed in a 4-pin DIP (Dual Inline Package). The usually presents the following pin assignments (viewed from top):

Understanding the A1458 Optocoupler: Features, Specs, and Applications a1458 optocoupler datasheet

A digital high signal (e.g., 5V from an Arduino or PLC) passes through a current-limiting resistor into Pin 1 (Anode).

) : Certified protection between 3750 Vrms to 5300 Vrms depending on the exact housing variant.

This article serves as a comprehensive guide to the A1458 optocoupler, breaking down the technical data you would typically find in a datasheet and explaining how to use it in your next project. What is the A1458 Optocoupler? The A1458 is a

) is a high-speed, single-channel optocoupler designed for isolation in high-performance switching applications. It is typically manufactured by Broadcom (formerly Avago Technologies).

Eradicates ground loop noise in sensitive audio, data transmission, and medical monitoring systems. Design Example: Interfacing a 5V MCU to a 24V Load

Typically rated between 2,500 Vrms and 5,000 Vrms (depending on the specific manufacturer package variant), ensuring robust protection against voltage surges. What are the and output voltage levels of your system

: Acts as a feedback element in switched-mode power supplies (SMPS) to maintain isolation. Motor Drives

The device is distributed primarily in compact, industry-standard surface-mount and through-hole DIP-8 packages. The standard 8-pin layout separates high-voltage input lines cleanly from low-voltage logic outputs to prevent circuit tracking:

: The LED in the A1458 is highly efficient. The datasheet's recommended forward current (IF) is typically between 10mA and 16mA. A series resistor should always be used to limit the current to the appropriate value based on your control voltage.