A1458 Optocoupler Datasheet Jun 2026

: Operates with a maximum supply current ( ICCcap I sub cap C cap C end-sub ) of just 1.2 mA , ideal for energy-efficient designs.

The A1458 (often listed as HCPL-1458) is a high-speed, single-channel hermetically sealed optocoupler designed for industrial and high-reliability applications. It features a 5300 Vrmscap V sub r m s end-sub A1458 Optocoupler Datasheet

The A1458 usually follows a standard high-speed optocoupler pinout. Designers must consult the technical datasheet to ensure correct orientation: : Operates with a maximum supply current (

If the exact A1458 datasheet is unavailable, download the PC817 or LTV-817 datasheet. Over 90% of generic A1458 units are functionally identical to these industry standards. Always compare the CTR rank and isolation voltage on the part's label. Designers must consult the technical datasheet to ensure

For linear feedback in power supplies, choose a narrow CTR range (e.g., B rank) to minimize loop gain variation. For digital isolation, any rank works as long as you account for the minimum CTR at end-of-life (which typically degrades 20-30% over 10 years).

Driving the LED with too much current (30mA+) thinking it improves switching speed. Actually, excess current increases saturation and turn-off delay due to stored charge in the base of the phototransistor.