| FU-641SEA-1M1 | 1.55m EA modulator integrated DFB-LD module in 6-pin -- package. Operational temperature range from -20°C to 70°C. | Datasheet*) |
| FU-641SEA-1M2 | 1.55m EA modulator integrated DFB-LD module in 6-pin -- package. Operational temperature range from -20°C to 70°C. | Datasheet*) |
| FU-641SEA-1M3 | 1.55m EA modulator integrated DFB-LD module in 6-pin -- package. Operational temperature range from -20°C to 70°C. | Datasheet*) |
| FU-641SEA-1M4 | 1.55m EA modulator integrated DFB-LD module in 6-pin -- package. Operational temperature range from -20°C to 70°C. | Datasheet*) |
| FU-641SEA-1M1 | 1.55m EA modulator integrated DFB-LD module in 7-pin -- package. Operational temperature range from -20°C to 70°C. | Datasheet*) |
| FU-641SEA-1M2 | 1.55m EA modulator integrated DFB-LD module in 7-pin -- package. Operational temperature range from -20°C to 70°C. | Datasheet*) |
| FU-641SEA-1M3 | 1.55m EA modulator integrated DFB-LD module in 7-pin -- package. Operational temperature range from -20°C to 70°C. | Datasheet*) |