A1458 Optocoupler Datasheet [top]

Optocouplers are essential components in modern electronics, providing electrical isolation between low-power control circuits and high-voltage power systems. Among the various options available to engineers, the (often associated with high-performance optoelectronic devices from manufacturers like Broadcom/Avago) stands out for its reliability and speed.

An analytical breakdown of the technical specifications, pinout architecture, and circuit implementations found within the official guides engineers in optimizing its usage. Technical Specifications and Core Features

: Protecting communication lines (RS-232, RS-485) and eliminating ground loops. Gate Driving : Specifically designed to drive power transistors like Power MOSFETs in high-power applications. Product Availability a1458 optocoupler datasheet

Rated at 5300 Vrms, protecting sensitive control logic from high-voltage spikes. Power Consumption: Low current draw, with ICCcap I sub cap C cap C end-sub maximum around 1.2 mA. Common Mode Rejection (CMR): Very high immunity to noise ( >50is greater than 50 🛠️ Typical Pin Configuration

While specific manufacturers (like Avago, Broadcom, or Toshiba) may have slight variations, here are the standard electrical characteristics you can expect from an A1458 datasheet: 1. Input Side (Emitter) Typically 20mA to 50mA (Absolute Maximum). Forward Voltage ( VFcap V sub cap F ): Approximately 1.2V to 1.5V at 10mA. Reverse Voltage: Usually rated around 5V. 2. Output Side (Detector) Collector-Emitter Voltage ( VCEOcap V sub cap C cap E cap O end-sub Power Consumption: Low current draw, with ICCcap I

Below is an outline for designing a simple digital isolation circuit using one channel of the A1458 to translate a 5V MCU logic signal across an electrical barrier to a separate 12V system. Circuit Diagram Layout

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The is likely a standard DIP-4 phototransistor optocoupler with medium speed (10 µs) and 3.75kV isolation. Before purchasing: