| Part No. | View Picture | Color | λd | Lens Type | Luminous Intensity IV(Min) | Luminous Intensity IV(Typ) | Forward Voltage VF(Typ) | Forward Voltage VF(Max) | Reverse Current(IR) | Viewing Angle (2θ 1/2) | |
| FDL-3521R-ZRC1 |
|
▉Red |
641nm | Red Clear | 27 | 52 | 2.0 | 2.5 | 100uA | 30 |
|
| FDL-3521R-ZRADSDP |
|
▉Red |
643nm | Red Diffused | 60 | 80 | 2.0 | 2.4 | 100uA | 30 |
|
| FDL-3521R-ZRADS |
|
▉Red |
642nm | Red Diffused | 7.2 | 24.5 | 2.0 | 2.5 | 100uA | 30 |
|
| FDL-3521R-ZRADL |
|
▉Red |
631nm | Red Diffused | 57 | 245 | 2.0 | 2.5 | 100uA | 60 |
|
| FDL-3521R-ZRACS |
|
▉Red |
641nm | Red Clear | 72 | 245 | 2.0 | 2.5 | 100uA | 30 |
|
| FDL-3521RT-ZR1 |
|
▉Red |
631nm | Red Clear | 60 | 80 | 2.0 | 2.4 | 100uA | 30 |
|
| FDL-3521R-TWC1S |
|
▉Red |
639nm | Water Clear | 112 | 180 | 2.0 | 2.5 | 10μA | 30 |
|
| FDL-3521R-TRDYH-D28 |
|
▉Red |
635nm | Red Diffused | 9 | 45 | 2.0 | 2.5 | 100uA | 3mm，5.2mm，1mm |
|
| FDL-3521R-TRCL-SX |
|
▉Red |
630nm | Red Clear | 72 | 112 | 2.0 | 2.5 | 10uA | 60 |
|
| FDL-3521RD-ZRD1-D17.9-3.5 |
|
▉Red |
635nm | Red Diffused | 3.0 | 5.0 | 2.0 | 2.5 | 100uA | 30 |
|