The 120-10104- 0001 (ET-5000F) from Coherent Corp. is a Photodetector with Wavelength Range 2000 nm, Supply Voltage 3 VDC, Rise Time <28 ps, Bandwidth >10 GHz, Active Area Diameter 40 µm. More details for 120-10104- 0001 (ET-5000F) can be seen below.