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| PartNumber | HMA121BR1 | HMA121BR1V | HMA121BR2 |
| Description | OPTOISO 3.75KV TRANSISTOR 4SMD | OPTOISO 3.75KV TRANSISTOR 4SMD | OPTOISO 3.75KV TRANSISTOR 4SMD |
| Manufacturer | Fairchild Semiconductor | - | - |
| Product Category | Optoisolators - Transistor, Photovoltaic Output | - | - |
| Series | - | - | - |
| Packaging | Tape & Reel (TR) | - | - |
| Package Case | 4-SMD, Gull Wing | - | - |
| Input Type | DC | - | - |
| Operating Temperature | -40°C ~ 100°C | - | - |
| Mounting Type | Surface Mount | - | - |
| Output Type | Transistor | - | - |
| Number of Channels | 1 | - | - |
| Supplier Device Package | 4-Mini-Flat | - | - |
| Current Output Channel | 80mA | - | - |
| Voltage Output Max | 80V | - | - |
| Current DC Forward If Max | 50mA | - | - |
| Voltage Isolation | 3750Vrms | - | - |
| Voltage Forward Vf Typ | 1.3V (Max) | - | - |
| Current Transfer Ratio Min | 50% @ 5mA | - | - |
| Current Transfer Ratio Max | 150% @ 5mA | - | - |
| Turn On Turn Off Time Typ | - | - | - |
| Rise Fall Time Typ | 3μs, 3μs | - | - |
| Vce Saturation Max | 400mV | - | - |