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| PartNumber | PT91-21B/TR7 | PT91-21B | PT91-21B/TR10 |
| Description | Phototransistors IR Phototransistor | Phototransistors IR Phototransistor | Optical Sensors Phototransistors 940nm 15/15rf 1.9mm Z-Bend |
| Manufacturer | Everlight | Everlight | Everlight Electronics Co Ltd |
| Product Category | Phototransistors | Phototransistors | Optical Sensors - Phototransistors |
| RoHS | Y | Y | - |
| Product | Phototransistors | Phototransistors | Phototransistors |
| Package / Case | Gull Wing SMD/SMT | - | - |
| Mounting Style | SMD/SMT | - | SMD/SMT |
| Peak Wavelength | 940 nm | - | - |
| Maximum On State Collector Current | 20 mA | 20 mA | 20 mA |
| Collector Emitter Voltage VCEO Max | 30 V | - | - |
| Collector Emitter Breakdown Voltage | 30 V | - | 30 V |
| Collector Emitter Saturation Voltage | 0.4 V | - | 0.4 V |
| Dark Current | 100 nA | - | 100 nA |
| Rise Time | 15 us | - | 15 us |
| Fall Time | 15 us | - | 15 us |
| Pd Power Dissipation | 75 mW | - | - |
| Minimum Operating Temperature | - 25 C | - | - 25 C |
| Maximum Operating Temperature | + 85 C | - | + 85 C |
| Height | 2.7 mm | - | - |
| Length | 2.5 mm | - | - |
| Lens Color/Style | Black | - | - |
| Packaging | Reel | - | Digi-ReelR Alternate Packaging |
| Type | 1.9 mm Round Subminiature Gull Wing Lead Phototransistor | - | - |
| Wavelength | 940 nm | - | 940nm |
| Width | 2 mm | - | - |
| Brand | Everlight | Everlight | - |
| Half Intensity Angle Degrees | 35 deg | - | - |
| Moisture Sensitive | Yes | - | - |
| Product Type | Phototransistors | Phototransistors | - |
| Factory Pack Quantity | 1000 | 1000 | - |
| Subcategory | Optical Detectors and Sensors | Optical Detectors and Sensors | - |
| Series | - | - | - |
| Package Case | - | - | 2.5 mm x 2 mm x 2.7 mm |
| Operating Temperature | - | - | -25°C ~ 85°C (TA) |
| Mounting Type | - | - | Surface Mount |
| Power Max | - | - | - |
| Current Collector Ic Max | - | - | 20mA |
| Voltage Collector Emitter Breakdown Max | - | - | 30V |
| Orientation | - | - | Top View |
| Current Dark Id Max | - | - | 100nA |
| Viewing Angle | - | - | - |
| Pd Power Dissipation | - | - | 75 mW |
| Collector Emitter Voltage VCEO Max | - | - | 30 V |