| PartNumber | OPE1275H-256 | OPE1275S-128 | OPE1275S-256 |
| Description | Encoders Encoder, 256 PPR Single Channel | Encoders Encoder, 128 PPR Single Channel | ROTARY ENCODER OPTICAL 256PPR |
| Manufacturer | TT Electronics | TT Electronics | - |
| Product Category | Encoders | Encoders | - |
| RoHS | Y | Y | - |
| Series | OPEx275H | OPEx275S | - |
| Mounting Style | PCB Mount | PCB Mount | - |
| Product | Optical Encoders | Optical Encoders | - |
| Resolution | 256 PPR | 128 PPR | - |
| Number of Detents | No Detent | No Detent | - |
| Number of Channels | 1 Channel | 1 Channel | - |
| Termination Style | SMD/SMT | SMD/SMT | - |
| Shaft Diameter | 1/8 in | - | - |
| Shaft Type | Round / Plain | - | - |
| With Switch | No Switch | No Switch | - |
| Operating Supply Voltage | 5 VDC | 5 VDC | - |
| Brand | Optek / TT Electronics | Optek / TT Electronics | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Minimum Operating Temperature | 0 C | 0 C | - |
| Product Type | Encoders | Encoders | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Encoders | Encoders | - |