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| PartNumber | OP538FB | OP538FA | OP538F |
| Description | Phototransistors Photodarlington | Optical Sensors Phototransistors Photodarlington | |
| Manufacturer | TT Electronics | - | - |
| Product Category | Phototransistors | - | - |
| RoHS | Y | - | - |
| Product | Photodarlingtons | - | - |
| Package / Case | 4.19 mm x 1.85 mm x 3.3 mm | - | - |
| Mounting Style | Through Hole | - | - |
| Peak Wavelength | 935 nm | - | - |
| Maximum On State Collector Current | 20.5 mA | - | - |
| Collector Emitter Voltage VCEO Max | 30 V | - | - |
| Collector Emitter Breakdown Voltage | 15 V | - | - |
| Collector Emitter Saturation Voltage | 1 V | - | - |
| Dark Current | 225 nA | - | - |
| Pd Power Dissipation | 100 mW | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 100 C | - | - |
| Height | 3.3 mm | - | - |
| Length | 4.19 mm | - | - |
| Lens Color/Style | Black | - | - |
| Packaging | Bulk | - | - |
| Wavelength | 935 nm | - | - |
| Width | 1.85 mm | - | - |
| Brand | Optek / TT Electronics | - | - |
| Half Intensity Angle Degrees | 65 deg | - | - |
| Product Type | Phototransistors | - | - |
| Factory Pack Quantity | 100 | - | - |
| Subcategory | Optical Detectors and Sensors | - | - |