 | OP505A | Optek Technology / TT Electronics | NPN silicon phototransistor, Voltage Collector Emitter Breakdown 30V, T-1-2, RoHS | $0.5500 – $0.6800 | 38,254 | Bulk |
 | OP509A | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN SIDE LOOK | $0.7690 | 0 | Bulk |
 | OP506W | Optek Technology / TT Electronics | PHOTOTRANSMITTER SILICON NPN T-1 | $0.7090 | 0 | Bulk |
 | OP506A | Optek Technology / TT Electronics | PHOTOTRANSISTOR 3MM 935NM NPN | $0.6170 – $0.8000 | 0 | Bulk |
 | OP830WSL | Optek Technology / TT Electronics | PHOTODARLINGTON NPN 890NM TO-18 | $2.3160 – $2.6000 | 631 | Bulk |
 | OP800SL | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN HERM TO18 | $2.3650 | 0 | Bulk |
 | OP515B | Optek Technology / TT Electronics | PHOTOTRANSISTOR | $4.6110 – $5.1800 | 125 | Bulk |
 | OP550A | Optek Technology / TT Electronics | NPN silicon phototransistor, Voltage Collector Emitter Breakdown 30V, Radial-2, RoHS | $0.6210 – $0.7200 | 42,363 | Bulk |
 | OP750A | Optek Technology / TT Electronics | PHOTOTRNS NPN W/RES SIDE LOOK | $0.7230 – $0.8100 | 42 | Bulk |
 | OP644SL | Optek Technology / TT Electronics | PHOTOTRANSIST NPN 890NM PILL PAK | $1.8900 – $2.1200 | 879 | Bulk |
| OP600B | Optek Technology / TT Electronics | PHOTOTRNS SILCN NPN HERMETC PILL | $2.2180 – $2.4900 | 16 | Bulk |
| OP800WSL | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN HERM TO18 | $2.4520 | 0 | Bulk |
 | OP555B | Optek Technology / TT Electronics | PHOTOTRNS NPN PLASTIC SIDE LOOK | $0.8600 – $0.9600 | 663 | Bulk |
 | OP804TX | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN TO-18 | $25.8000 | 0 | Bulk |
 | OP800C | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN HERM TO18 | $2.3640 | 0 | Bulk |
| OP804TXV | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN TO-18 | $30.0400 | 0 | Bulk |
| OP505D | Optek Technology / TT Electronics | PHOTOTRANSISTOR SILICON NPN T-1 | $0.5510 – $0.6100 | 32 | Bulk |
| OP643SL | Optek Technology / TT Electronics | PHOTOTRNS SILICN NPN HERMET PILL | $1.6300 – $2.0400 | 0 | Bulk |
 | OP535B | Optek Technology / TT Electronics | PHOTODARLINGTON SILICON NPN T-1 | $0.6900 – $0.7700 | 369 | Bulk |
| OP800D | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN HERM TO18 | $2.3720 | 0 | Bulk |
| OP603TX | Optek Technology / TT Electronics | PHOTOTRNS SILCN NPN HERMETC PILL | $43.3740 | 0 | Bulk |
| OP800A | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN HERM TO18 | $2.2040 – $2.6600 | 0 | Bulk |
| OP602TX | Optek Technology / TT Electronics | PHOTOTRNS SILCN NPN HERMETC PILL | Contact | 0 | Bulk |
| OP803TXV | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN TO-18 | Contact | 0 | Bulk |
| OP602TXV | Optek Technology / TT Electronics | PHOTOTRNS SILCN NPN HERMETC PILL | Contact | 0 | Bulk |
| No image | OP775A | Optek Technology / TT Electronics | PHOTOTRNS NPN W/CAP SIDE LOOK | Contact | 0 | Bulk |
| OP642SL | Optek Technology / TT Electronics | PHOTOTRNS SILCN NPN HERMETC PILL | Contact | 0 | Bulk |
| OP801SL | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN HERM TO18 | Contact | 0 | Bulk |
| No image | OP775C | Optek Technology / TT Electronics | PHOTOTRNS NPN W/CAP SIDE LOOK | Contact | 0 | Bulk |
 | OP552A | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN SIDE LOOK | Contact | 0 | Bulk |
 | OP580DA | Optek Technology / TT Electronics | PHOTODARLINGTON NPN CLR PLCC-2 | Contact | 0 | Cut Tape (CT) |
| OP506D | Optek Technology / TT Electronics | PHOTOTRANSMITTER SILICON NPN T-1 | Contact | 0 | Bulk |
| OP560B | Optek Technology / TT Electronics | PHOTODARL SILICON NPN SIDE LOOK | Contact | 0 | Bulk |
| OP750C | Optek Technology / TT Electronics | PHOTOTRNS NPN W/RES SIDE LOOK | Contact | 0 | Bulk |
 | OP793A | Optek Technology / TT Electronics | PHOTOTRANS NPN W/RESISTOR TO-18 | Contact | 0 | Bulk |
 | OP798A | Optek Technology / TT Electronics | PHOTOTRANS NPN W/RESISTOR TO-18 | Contact | 0 | Bulk |
 | OP580 | Optek Technology / TT Electronics | PHOTOTRANSISTOR NPN SMD PLCC-2 | Contact | 0 | Tape & Reel (TR) |
| OP793B | Optek Technology / TT Electronics | PHOTOTRANS NPN W/RESISTOR TO-18 | Contact | 0 | Bulk |
 | OP705B | Optek Technology / TT Electronics | PHOTOTRANSISTR NPN W/RES T-1 | Contact | 0 | Bulk |
| No image | OP755A | Optek Technology / TT Electronics | PHOTOTRNS NPN W/RES SIDE LOOK | Contact | 0 | Bulk |
| No image | OP300SL | Optek Technology / TT Electronics | PHOTO DARLINGTON NPN 15V 850NM | Contact | 0 | Bulk |
| OP770C | Optek Technology / TT Electronics | PHOTOTRNS NPN W/CAP SIDE LOOK | Contact | 0 | Bulk |
| No image | OP515D | Optek Technology / TT Electronics | PHOTOTRANSISTOR | Contact | 0 | Bulk |
| No image | OP515C | Optek Technology / TT Electronics | PHOTOTRANSISTOR | Contact | 0 | Bulk |
| OP798C | Optek Technology / TT Electronics | PHOTOTRANS NPN W/RESISTOR TO-18 | Contact | 0 | Bulk |
| No image | OP775D | Optek Technology / TT Electronics | PHOTOTRNS NPN W/CAP SIDE LOOK | Contact | 0 | Bulk |
 | OP508FB | Optek Technology / TT Electronics | PHOTOTRANS SILICON NPN FLAT LENS | Contact | 0 | Bulk |
| OP798D | Optek Technology / TT Electronics | PHOTOTRANS NPN W/RESISTOR TO-18 | Contact | 0 | Bulk |
