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| PartNumber | IR91-21C | IR91-21C/TR10 | IR91-21C-F7 |
| Description | Infrared Emitters INFRARED LED 940nm | Infrared Emitters Infrared LED | |
| Manufacturer | Everlight Electronics Co Ltd | Everlight Electronics Co Ltd | - |
| Product Category | Infrared, UV, Visible Emitters | Infrared, UV, Visible Emitters | - |
| Series | - | - | - |
| Type | IR | IR | - |
| Packaging | Bulk | Digi-ReelR Alternate Packaging | - |
| Package Case | Axial, Flat Leads | 2.5 mm x 2.2 mm x 2.7 mm | - |
| Operating Temperature | -25°C ~ 85°C (TA) | -25°C ~ 85°C (TA) | - |
| Mounting Type | Through Hole | Surface Mount | - |
| Current DC Forward If Max | 65mA | 65mA | - |
| Orientation | Top View | Top View | - |
| Wavelength | 940nm | 940nm | - |
| Viewing Angle | 25° | 25° | - |
| Voltage Forward Vf Typ | 1.2V | 1.2V | - |
| Radiant Intensity Ie Min If | 3mW/sr @ 20mA | 3mW/sr @ 20mA | - |
| Illumination Color | Infrared | Infrared | - |
| If Forward Current | 20 mA | 20 mA | - |
| Mounting Style | - | SMD/SMT | - |
| Power Rating | - | 130 mW | - |
| Maximum Operating Temperature | - | + 85 C | - |
| Minimum Operating Temperature | - | - 40 C | - |
| Vf Forward Voltage | - | 1.2 V | - |
| Lens Shape | - | Dome | - |
| Radiant Intensity | - | 5 mW/sr | - |