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| PartNumber | ENS1D-B28-L00128L | ENS1D-B28-L00100L | ENS1D-B28-L00128 |
| Description | Encoders 128CPR AXIAL | Encoders 100CPR AXIAL | Encoders 128Cycle Axial |
| Manufacturer | Bourns | Bourns Inc. | Bourns Inc. |
| Product Category | Encoders | Encoders | Encoders |
| RoHS | Y | - | - |
| Series | EN | EN | EN |
| Mounting Style | Panel Mount | - | Panel |
| Product | Optical Encoders | - | Optical |
| Type | Incremental | - | - |
| Resolution | 128 PPR | - | 128 PPR |
| Technology | Rotary | - | - |
| Number of Detents | No Detent | - | - |
| Number of Channels | 2 Channel | - | - |
| Termination Style | PC Pin | Cable Leads | Cable Leads |
| Output Type | Quadrature | Quadrature (Incremental) | Quadrature (Incremental) |
| Shaft Diameter | 1/4 in | - | 1/4 in |
| Shaft Type | Round / Plain | - | Round / Plain |
| With Switch | No Switch | - | No Switch |
| Operating Supply Voltage | 5 VDC | - | 5 VDC |
| Packaging | Bulk | - | Bulk |
| Bushing Size | 3/8 in x 3/8 in | - | - |
| Size / Dimension | 21 mm x 16 mm | - | - |
| Brand | Bourns | - | - |
| Bushing Material | Metal | - | - |
| Bushing Thread | 3/8-32 UNEF | - | - |
| Maximum Operating Temperature | + 75 C | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Product Type | Encoders | - | - |
| Shaft Length | 7/8 in | - | - |
| Factory Pack Quantity | 42 | - | - |
| Subcategory | Encoders | - | - |
| Tradename | Pro Audio | - | - |
| Unit Weight | 0.455034 oz | - | - |
| Mounting Type | - | Panel Mount | Panel Mount |
| Voltage Supply | - | 5V | 5V |
| Actuator Type | - | 1/4" Dia Round End | 1/4" Dia Round End |
| Orientation | - | Right Angle | Right Angle |
| Encoder Type | - | Optical | Optical |
| Pulses per Revolution | - | 100 | 128 |
| Detent | - | No | No |
| Built in Switch | - | No | No |
| Rotational Life Cycles Min | - | 200M | 200M |
| Operating Temperature Range | - | - | - 40 C to + 75 C |