| PartNumber | VOT8121AB-V | VOT8121AB | VOT8121AB-VT3 |
| Description | Triac & SCR Output Optocouplers Optocplr, Phototriac uL, cUL, CQC SMD-4 | Triac & SCR Output Optocouplers Optocplr, Phototriac uL, cUL, CQC SMD-4 | Triac & SCR Output Optocouplers Optocplr, Phototriac uL, cUL, CQC SMD-4 |
| Manufacturer | Vishay | Vishay | Vishay |
| Product Category | Triac & SCR Output Optocouplers | Triac & SCR Output Optocouplers | Triac & SCR Output Optocouplers |
| RoHS | Y | Y | Y |
| Package / Case | SMD-4 | SMD-4 | SMD-4 |
| Zero Crossing Circuit | Without Zero-Crossing Circuit | Without Zero-Crossing Circuit | Without Zero-Crossing Circuit |
| Output Type | PhotoTriac | PhotoTriac | PhotoTriac |
| Number of Channels | 2 Channel | 2 Channel | 2 Channel |
| Isolation Voltage | 5300 Vrms | 5300 Vrms | 5300 Vrms |
| If Forward Current | 50 mA | 50 mA | 50 mA |
| Vf Forward Voltage | 1.2 V | 1.2 V | 1.2 V |
| Pd Power Dissipation | 330 mW | 330 mW | 330 mW |
| Off state Output Voltage VDRM | 800 V | 800 V | 800 V |
| Minimum Operating Temperature | - 55 C | - 55 C | - 55 C |
| Maximum Operating Temperature | + 110 C | + 110 C | + 110 C |
| Packaging | Tube | Tube | Reel |
| Brand | Vishay Semiconductors | Vishay Semiconductors | Vishay Semiconductors |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Maximum Trigger Current | 10 mA | 10 mA | 10 mA |
| On State RMS Current It RMS | 100 mA | 100 mA | 100 mA |
| Product Type | Triac & SCR Output Optocouplers | Triac & SCR Output Optocouplers | Triac & SCR Output Optocouplers |
| Factory Pack Quantity | 100 | 100 | 2000 |
| Subcategory | Optocouplers | Optocouplers | Optocouplers |
| Part # Aliases | VOT8121AB-VT VOT8121AB-VT1 VOT8121AB-VT2 VOT8121AB-VT3 | VOT8121AB-T VOT8121AB-T1 VOT8121AB-T2 VOT8121AB-T3 | - |