A1458 Optocoupler Datasheet //free\\

The is a reliable, cost-effective solution for basic galvanic isolation. While it lacks the speed of advanced logic gate optocouplers, its strength lies in its simplicity, wide CTR range, and robust 5kV isolation. By understanding its datasheet—paying close attention to CTR ranking, derating curves, and pinout—you can confidently integrate it into power supplies, industrial controls, and isolated communication interfaces.

For high-speed or linear applications, consider alternatives like the HCNR200 (linear) or 6N137 (high speed). But for general-purpose isolation, the A1458 remains a proven workhorse. A1458 Optocoupler Datasheet

max), making it suitable for high-frequency digital signal transmission. Noise Immunity : Features high common-mode transient immunity ( ) of at least The is a reliable, cost-effective solution for basic

Exceeding any of these values will permanently damage the A1458. For high-speed or linear applications

The part number "A1458" can occasionally be a proprietary house number (e.g., from Vishay, Toshiba, or a Chinese manufacturer) or a specific batch code. In many historical databases, the A1458 aligns closely with a DIP-4 transistor output optocoupler . We will treat it as a standard phototransistor optocoupler with specifications similar to the LTV-817 or KPS2801. Always refer to the manufacturer-specific datasheet for your batch.