• 3-Pin TO-5 Can
• Large Active Area of 13 mm²

The Thorlabs FDS100 photodiode is ideal for measuring both pulsed and CW fiber light sources, by converting the optical power to an electrical current. The detector is housed in a TO-5 package with an anode and cathode connection. The photodiode anode produces current as a function of the incident light power and the wavelength.

Inhomogeneity on the edge of an active area of the detector can generate unwanted capacitance and resistance that distorts the time-domain response of a photodiode. Thorlabs therefore recommends that the incident light on the photodiode is well centered on the active area. This can be accomplished by placing a focusing lens or pinhole in front of the detector element.

• Wavelength Range: 350 - 1100 nm
• Peak Wavelength: 980 nm
• Peak Responsivity: 0.60 A/W
• Active Area: 13 mm²
• Diode Package Type: TO-5
• Rise / Fall Time^a: 10 ns / 10 ns @ 20 V
• NEP (W/Hz^1/2): 1.2 x 10^-14 @ 900 nm, 20 V
• Dark Current: 20 nA (Max) @ 20 V
• Junction Capacitance^a: 40 pF @ 10 V
• Max Bias Voltage: 25 V
• Sensor Material: Silicon (Si)

a. Typical Values. R_L = 50 Ω