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| PartNumber | OPB991L51 | OPB991L55 | OPB991L51Z |
| Description | Optical Switches, Transmissive, Photo IC Output Slotted Opt Switch Photologic | Optical Switches, Transmissive, Photo IC Output Slotted Opt Switch Photologic | Optical Switches, Transmissive, Photo IC Output Slotted Opt Switch Photologic |
| Manufacturer | TT Electronics | TT Electronics | TT Electronics |
| Product Category | Optical Switches, Transmissive, Photo IC Output | Optical Switches, Transmissive, Photo IC Output | Optical Switches, Transmissive, Photo IC Output |
| RoHS | N | N | Y |
| Slot Width | 3.18 mm | 3.18 mm | 3.18 mm |
| Aperture Width | 1.27 mm | 1.27 mm | 1.27 mm |
| If Forward Current | 40 mA | 40 mA | 40 mA |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 70 C | + 70 C | + 70 C |
| Series | OPB9 | OPB9 | OPB9-Z |
| Height | 15.63 mm | 15.63 mm | 15.63 mm |
| Length | 18.48 mm | 18.48 mm | 18.48 mm |
| Output Type | Open Collector, Buffer | Open Collector, Buffer | Open Collector, Buffer |
| Sensing Method | Transmissive, Slotted | Transmissive, Slotted | Transmissive, Slotted |
| Width | 6.35 mm | 6.35 mm | 6.35 mm |
| Brand | Optek / TT Electronics | Optek / TT Electronics | Optek / TT Electronics |
| Number of Channels | 1 Channel | 1 Channel | - |
| Fall Time | 70 ns | 70 ns | 70 ns |
| Pd Power Dissipation | 300 mW | 300 mW | 300 mW |
| Product Type | Optical Switches, Transmissive, Photo IC Output | Optical Switches, Transmissive, Photo IC Output | Optical Switches, Transmissive, Photo IC Output |
| Rise Time | 70 ns | 70 ns | 70 ns |
| Subcategory | Optical Switches | Optical Switches | Optical Switches |
| Vr Reverse Voltage | 2 V | 2 V | 2 V |
| Packaging | - | - | Bulk |
| Wavelength | - | - | 890 nm |
| High Level Output Current | - | - | 100 uA |
| Low Level Output Voltage | - | - | 0.4 V |
| Factory Pack Quantity | - | - | 100 |
| Vf Forward Voltage | - | - | 1.7 V |