A1458 Optocoupler Datasheet
ONSEMI, DC Input Logic Gate Output Optocoupler, Surface Mount, 8-Pin Dip (5 Ct), 6N137SM A widely available high-speed single-channel optocoupler.
When a new optocoupler part number like crosses your desk, the datasheet is the only source of truth. Unlike standard jellybean parts (e.g., 4N25), an "A1458" suggests either a proprietary manufacturer code, a high-reliability (Hi-Rel) military/aerospace component, or a specific binning of a common device. a1458 optocoupler datasheet
| Rank | CTR (at IF=5mA, VCE=5V) | | :--- | :--- | | A1458-A | 50% - 150% | | A1458-B | 100% - 300% | | A1458-C | 200% - 600% | ONSEMI, DC Input Logic Gate Output Optocoupler, Surface