| PartNumber | ENS1J-B20-L00100L | ENS1J-B28-L00064L | ENS1J-B20-L00256L |
| Description | Encoders ENCODER - ROTARY OPTICAL | Encoders 64CPR AXIAL | Encoders 256CPR AXIAL |
| Manufacturer | Bourns | Bourns | Bourns Inc. |
| Product Category | Encoders | Encoders | Encoders |
| RoHS | Y | Y | - |
| Series | EN | EN | EN |
| Mounting Style | Panel Mount | Panel Mount | - |
| Product | Optical Encoders | Optical Encoders | - |
| Type | Incremental | Incremental | - |
| Resolution | 100 PPR | 64 PPR | - |
| Technology | Rotary | Rotary | - |
| Number of Detents | No Detent | No Detent | - |
| Number of Channels | 2 Channel | 2 Channel | - |
| Termination Style | PC Pin | PC Pin | PC Pin |
| Output Type | Quadrature | Quadrature | Quadrature (Incremental) |
| Shaft Diameter | 1/4 in | 1/4 in | - |
| Shaft Type | Round / Plain | Round / Plain | - |
| With Switch | No Switch | No Switch | - |
| Bushing Size | 3/8 in x 3/8 in | 3/8 in x 3/8 in | - |
| Size / Dimension | 21 mm x 16 mm | 21 mm x 16 mm | - |
| Brand | Bourns | Bourns | - |
| Bushing Material | Metal | Metal | - |
| Bushing Thread | 3/8-32 UNEF | 3/8-32 UNEF | - |
| Product Type | Encoders | Encoders | - |
| Shaft Length | 5/8 in | 7/8 in | - |
| Factory Pack Quantity | 42 | 42 | - |
| Subcategory | Encoders | Encoders | - |
| Tradename | Pro Audio | Pro Audio | - |
| Unit Weight | 0.455034 oz | 0.455034 oz | - |
| Operating Supply Voltage | - | 5 VDC | - |
| Packaging | - | Tray | - |
| Maximum Operating Temperature | - | + 75 C | - |
| Minimum Operating Temperature | - | - 40 C | - |
| Mounting Type | - | - | Panel, PCB Through Hole |
| Voltage Supply | - | - | 5V |
| Actuator Type | - | - | 1/4" Dia Round End |
| Orientation | - | - | Vertical |
| Encoder Type | - | - | Optical |
| Pulses per Revolution | - | - | 256 |
| Detent | - | - | No |
| Built in Switch | - | - | No |
| Rotational Life Cycles Min | - | - | 200M |