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| PartNumber | PT91-21C/TR10 | PT91-21C | PT91-21C-TR9 |
| Description | Phototransistors Phototransistor | Optical Sensors Phototransistors IR Phototransisto | Phototransistor IR Chip Silicon 940nm 2-Pin Miniature SMD Bag (Alt: 3291210550) |
| Manufacturer | Everlight | Everlight Electronics Co Ltd | - |
| Product Category | Phototransistors | Optical Sensors - Phototransistors | - |
| RoHS | Y | - | - |
| Package / Case | SMD | - | - |
| Peak Wavelength | 940 nm | - | - |
| Maximum On State Collector Current | 20 mA | 20 mA | - |
| Collector Emitter Voltage VCEO Max | 30 V | - | - |
| Dark Current | 100 nA | - | - |
| Rise Time | 15 us | - | - |
| Fall Time | 15 us | - | - |
| Pd Power Dissipation | 75 mW | - | - |
| Minimum Operating Temperature | - 25 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Height | 2.7 mm | - | - |
| Length | 2.5 mm | - | - |
| Lens Color/Style | Water Clear | - | - |
| Packaging | Reel | Bulk | - |
| Type | IR Chip | - | - |
| Width | 2 mm | - | - |
| Brand | Everlight | - | - |
| Moisture Sensitive | Yes | - | - |
| Product Type | Phototransistors | - | - |
| Factory Pack Quantity | 1000 | - | - |
| Subcategory | Optical Detectors and Sensors | - | - |
| Series | - | - | - |
| Product | - | Phototransistors | - |
| Package Case | - | Axial | - |
| Operating Temperature | - | -25°C ~ 85°C (TA) | - |
| Mounting Type | - | Through Hole | - |
| Power Max | - | 75mW | - |
| Current Collector Ic Max | - | 20mA | - |
| Voltage Collector Emitter Breakdown Max | - | 30V | - |
| Orientation | - | Top View | - |
| Wavelength | - | 940nm | - |
| Current Dark Id Max | - | 100nA | - |
| Viewing Angle | - | - | - |