
cosmo
KPS28010BTLD is a close cross-vendor SSOP-4 optocoupler candidate for PS2801-1-F3.
PS2801-1-F3 is an SSOP-4 phototransistor optocoupler. Closest candidates need pinout, CTR, and input-topology review.
CTR and VF need datasheet check.
SSOP-4 matches, pinout not shown.
No digital interface.
Some lifecycle fields are unclear.
No verified pin-compatible replacement is proven from the provided fields.
Start with KPS28010BTLD, then verify pinout, CTR bin, VF, and safety approvals.
Pinout and CTR are not confirmed; AC-input variants may not fit the same drive circuit.

cosmo
KPS28010BTLD is a close cross-vendor SSOP-4 optocoupler candidate for PS2801-1-F3.
| Feature / factor | PS2801-1-F3 | KPS28010BTLD | KPS28010ATLD | KPS28010CTLD | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4-pin SSOP | 4-pin SSOP | 4-pin SSOP | 4-pin SSOP | 4-pin SSOP — same catalog package; KPS28010ATLD: same catalog package; KPS28010CTLD: same catalog package; KPS28050ETLD: same catalog package |
| Pinout | not listed | not listed | not listed | not listed | not listed — must verify pins; KPS28010ATLD: must verify pins; KPS28010CTLD: must verify pins |
| Voltage | 2.5kVrms,80V | 3.75kVrms,80V | 3.75kVrms,80V | 3.75kVrms,80V | 3.75kVrms,80V — higher isolation; KPS28010ATLD: higher isolation; KPS28010CTLD: higher isolation; KPS28050ETLD: higher isolation |
| Current | 50mA IC | 50mA IC | 50mA IC | 50mA IC | 50mA IC / 50mA output — same output current; KPS28010ATLD: same output current; KPS28010CTLD: same output current; KPS28050ETLD: same output current |
| Temperature | -55..100C | -55..115C | - | not listed | -55..115C / not listed — wider hot limit; KPS28010CTLD: ES attr absent; KPS28050ETLD: wider hot limit |
| Lifecycle | Active | - | - | - | - — status unclear |
| Application | DC LED input | - | - | - | AC input response — input topology differs |
KPS28010BTLD is the closest provided candidate, but it still needs pinout and CTR verification.