| Key Features | Applications |
| Low Insertion Loss | Beam Delivery |
| High Return Loss | Fiber Optic Instruments |
| Parameter | Unit | Value | |
| Center Wavelength (λc) | nm | 638 | |
| Operating Wavelength Range | nm | λc ± 10 | |
| Working Distance | mm | 100 | 200 |
| Beam Waist Diameter (1/e², λc) | mm | ~0.46 | ~0.43 |
| Typ. Insertion Loss (Free Space Output) | dB | 0.45 | |
| Max. Insertion Loss (Free Space Output) | dB | 0.6 | |
| Min. Return Loss | dB | 50 | |
| Max. Optical Power (Continuous wave) | mW | 20 | |
| Max. Tensile Load | N | 5 | |
| Fiber Type | — | Nufern 630-HP Fiber | |
| Operating Temperature | ℃ | 23 ± 10 | |
| Storage Temperature | ℃ | -40 to +85 | |
1Fiber pigtail without AR coating.
2IL is 1.5 dB higher, RL is 5 dB lower for each connector added.
