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| PartNumber | 290VAB0R201B1 | 290VAB0R201A2 | 290VAB0R201A1 |
| Description | Encoders 20mm Round No Detent Encd | Encoders 20mm Round 20 Detents Encd | Encoders 20mm Round No Detent Encd |
| Manufacturer | CTS Electrocomponents | CTS Electrocomponents | CTS Electrocomponents |
| Product Category | Encoders | Encoders | IC Chips |
| Series | 290 | 290 | 290 |
| Product | Mechanical | Mechanical | Mechanical |
| Mounting Style | Through Hole | Through Hole | Through Hole |
| Termination Style | PC Pin | PC Pin | PC Pin |
| Operating Temperature Range | - 30C to +70C | - 30C to +70C | - 30C to +70C |
| Technology | Rotary | Rotary | Rotary |
| Mounting Type | PCB, Through Hole | PCB, Through Hole | PCB, Through Hole |
| Output Type | Quadrature (Incremental) | Quadrature (Incremental) | Quadrature (Incremental) |
| Voltage Supply | - | - | - |
| Resolution | 20 PPR | 20 PPR | 20 PPR |
| Actuator Type | 6mm Dia Round End | 6mm Dia Round End | 6mm Dia Round End |
| Orientation | Vertical | Vertical | Vertical |
| Encoder Type | Mechanical | Mechanical | Mechanical |
| Pulses per Revolution | 20 | 20 | 20 |
| Detent | No | Yes | No |
| Built in Switch | Yes | No | No |
| Rotational Life Cycles Min | 50K | 50K | 50K |
| Shaft Type | Round / Plain | Round / Plain | Round / Plain |
| Operating Supply Voltage | 12 VDC | 12 VDC | 12 VDC |
| Number of Detents | No Detent | 20 Detent | No Detent |
| With Switch | Switch | Switch | Switch |