| Image | Manufacturer | Part Number | Description |
|---|
 | Fairchild Semiconductor | FOD852S | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP SMD Black Box |
| Fairchild Semiconductor | FOD8523SD | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP SMD Black T/R |
| | California Eastern Laboratories | PS2533-1-A | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP Magazine |
 | Lite-On Electronics | LTV-815S | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP SMD |
| | California Eastern Laboratories | PS2533L-1-F3-A | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP SMD T/R |
 | Lite-On Electronics | LTV-815 | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP |
 | Sharp Electronics | PC725V0NSZXF | Optocoupler DC-IN 1-CH Darlington With Base DC-OUT 6-Pin PDIP Sleeve |
| Fairchild Semiconductor | FOD852SD | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP SMD Black T/R |
| | Toshiba | TLP372(F) | Optocoupler DC-IN 1-CH Darlington DC-OUT 6-Pin PDIP |
 | Fairchild Semiconductor | MOC8050M | Optocoupler DC-IN 1-CH Darlington DC-OUT 6-Pin PDIP White Tube |
| | California Eastern Laboratories | PS2502-4-A | Optocoupler DC-IN 4-CH Darlington DC-OUT 16-Pin PDIP Magazine |
| | California Eastern Laboratories | PS2502-1-A | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP Magazine |
| | California Eastern Laboratories | PS2502L-1-K-A | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP SMD Magazine |
| | California Eastern Laboratories | PS2502-1-K-A | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP Magazine |
 | Vishay | ILQ66-4 | Optocoupler DC-IN 4-CH Darlington DC-OUT 16-Pin PDIP |
| Vishay | ILQ55 | Optocoupler DC-IN 4-CH Darlington DC-OUT 16-Pin PDIP |
 | Fairchild Semiconductor | 4N32SM | Optocoupler DC-IN 1-CH Darlington With Base DC-OUT 6-Pin PDIP SMD White |
| Fairchild Semiconductor | MOC8050TVM | Optocoupler DC-IN 1-CH Darlington DC-OUT 6-Pin PDIP White Bulk |
| | California Eastern Laboratories | PS2802-1-A | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin SSOP T/R |
| | California Eastern Laboratories | PS2506-1-A | Optocoupler AC-IN 1-CH Darlington DC-OUT 4-Pin PDIP Magazine |
| Lite-On Electronics | LTV-8141 | Optocoupler AC-IN 1-CH Darlington DC-OUT 4-Pin PDIP |
 | Vishay | IL755-2X007T | Optocoupler AC-IN 1-CH Darlington With Base DC-OUT 6-Pin PDIP SMD T/R |
| Lite-On Electronics | LTV-8141S | Optocoupler AC-IN 1-CH Darlington DC-OUT 4-Pin PDIP SMD |
| | California Eastern Laboratories | PS2502L-1-E3 | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP SMD T/R |
| Renesas | PS2562L-1-F3-A | Optocoupler DC-IN 1-CH Darlington DC-OUT 4-Pin PDIP SMD T/R |
