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| PartNumber | 4N49 | 4N49A | 4N49AJANTX |
| Description | Transistor Output Optocouplers Optocoupled Isolator | Transistor Output Optocouplers Optocoupled Isolator | |
| Manufacturer | TT Electronics | TT Electronics | - |
| Product Category | Transistor Output Optocouplers | Transistor Output Optocouplers | - |
| RoHS | N | N | - |
| Package / Case | TO-78-6 | - | - |
| Output Type | NPN Phototransistor | NPN Phototransistor | - |
| Number of Channels | 1 Channel | 1 Channel | - |
| If Forward Current | 1 mA | - | - |
| Maximum Collector Emitter Voltage | 40 V | - | - |
| Maximum Collector Current | 50 mA | - | - |
| Isolation Voltage | 1000 VDC | 1000 Vrms | - |
| Maximum Collector Emitter Saturation Voltage | 0.3 V | - | - |
| Vf Forward Voltage | 1.5 V | - | - |
| Vr Reverse Voltage | 2 V | - | - |
| Pd Power Dissipation | 300 mW | - | - |
| Minimum Operating Temperature | - 55 C | - | - |
| Maximum Operating Temperature | + 125 C | - | - |
| Packaging | Bulk | Bulk | - |
| Configuration | 1 Channel | - | - |
| Brand | Optek / TT Electronics | Optek / TT Electronics | - |
| Current Transfer Ratio | 200 % to 1000 % | - | - |
| Fall Time | 25 us | - | - |
| Product Type | Transistor Output Optocouplers | Transistor Output Optocouplers | - |
| Rise Time | 25 us | - | - |
| Factory Pack Quantity | 100 | 100 | - |
| Subcategory | Optocouplers | Optocouplers | - |