A1458 Optocoupler Datasheet Site

Look for the CTR degradation over time graph. If the A1458 is older than 10 years, expect 20-30% less efficiency than the datasheet’s typical value.

The A1458 is a . It consists of an infrared light-emitting diode (LED) on the input side, optically coupled to an NPN silicon phototransistor on the output side. The coupling is achieved via a transparent insulating layer, typically providing isolation up to 5,000V RMS. a1458 optocoupler datasheet

The reveals a robust, versatile, and reliable component for medium-speed, high-isolation applications. It is not the fastest optocoupler (do not use it for RS-485 or CAN bus isolation), nor is it the cheapest (the PC817 is slightly more economical). However, the A1458 shines in its excellent CTR consistency, wide temperature range, and high 5000Vrms isolation. Look for the CTR degradation over time graph

The device is widely available in surface-mount SOP-8 or SOIC-8 packages, as well as 8-pin DIP formats for through-hole mounting. Some high-reliability versions are for use in aerospace or harsh industrial environments. HCPL-1458/ A1458 - Broadcom - Price, Inventory & Datasheets It consists of an infrared light-emitting diode (LED)