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| Part Number | BPX 81-4 |
| Datasheet | BPX 81-4 datasheet |
| Description | PHOTO TRANSISTOR NPN 850NM |
| Manufacturer | OSRAM Opto Semiconductors Inc. |
| Series | * |
| Part Status | Obsolete |
| Voltage - Collector Emitter Breakdown (Max) | 32V |
| Current - Collector (Ic) (Max) | 50mA |
| Current - Dark (Id) (Max) | 200nA |
| Wavelength | 850nm |
| Viewing Angle | 36° |
| Power - Max | 90mW |
| Mounting Type | Through Hole |
| Orientation | Top View |
| Operating Temperature | -40°C ~ 80°C (TA) |
| Package / Case | Radial - 2 Leads |