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| PartNumber | OPB491L11 | OPB491N11 | OPB491L11Z |
| Description | Optical Switches, Transmissive, Photo IC Output Photologic Slotted Optical Switch | Optical Sensors Optical Switches, Transmissive, Photo IC Output Photologic Slotted Optical Switch | Optical Sensors Optical Switches, Transmissive, Photo IC Output Photologic Slotted Optical Switch |
| Manufacturer | TT Electronics | - | - |
| Product Category | Optical Switches, Transmissive, Photo IC Output | - | - |
| RoHS | N | - | - |
| Slot Width | 3.18 mm | - | - |
| Aperture Width | 0.25 mm | - | - |
| If Forward Current | 40 mA | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Series | OPB4 | - | - |
| Height | 11.05 mm | - | - |
| Length | 18.72 mm | - | - |
| Output Type | Open Collector, Buffer | - | - |
| Sensing Method | Transmissive, Slotted | - | - |
| Width | 6.6 mm | - | - |
| Brand | Optek / TT Electronics | - | - |
| Number of Channels | 1 Channel | - | - |
| Fall Time | 50 ns | - | - |
| Pd Power Dissipation | 275 mW | - | - |
| Product Type | Optical Switches, Transmissive, Photo IC Output | - | - |
| Rise Time | 50 ns | - | - |
| Subcategory | Optical Switches | - | - |
| Vr Reverse Voltage | 2 V | - | - |