Photodiodes. FGA10 Datasheet

FGA10 Photodiodes. Datasheet pdf. Equivalent

FGA10 Datasheet
Recommendation FGA10 Datasheet
Part FGA10
Description Photodiodes
Feature FGA10; 435 Route 206 • P.O. Box 366 Newton, NJ 07860-0366 PH. 973-579-7227 FAX 973-300-3600 FGA10 InGaAs .
Manufacture Thorlabs
Datasheet
Download FGA10 Datasheet




Thorlabs FGA10
435 Route 206 • P.O. Box 366
Newton, NJ 07860-0366
PH. 973-579-7227
FAX 973-300-3600
FGA10 InGaAs Photodiode
--High Responsivity
--Low Capacitance: High Speed
Electrical Characteristics
Spectral Response:
Active Diameter:
Rise/Fall Time (RL=50):
Bandwidth (RL=50, -3dB,5V):
NEP@1550nm:
Dark Current:
Package:
800-1800nm*****
1.0mm
5.0ns (5V)
40 MHz min
1*10-14 W/Hz min
100nA max
(25nA typ) @ 5V
TO-5
Maximum Ratings
Damage Threshold CW:
Max Bias Voltage:
Storage Temperature:
Operating Temperature:
Reverse Current:
Forward Current:
100mW
20V
-40 to 125° C
-40 to 85° C
10mA
10mA
The Thorlabs FGA10 photodiode is ideal for measuring both pulsed and CW light sources, by converting
the optical power to an electrical current. The InGaAs detector is housed in a TO-5 package with an anode,
cathode and case connection. The photodiode anode produces a current which is a function of the incident
light power and the wavelength. The responsivity (λ), can be read from Figure 1 to estimate the amount
of photocurrent to expect. This can be converted to a voltage by placing a load resistor (RLOAD) from the
photodiode anode to the circuit ground. The output voltage is derived as:
Vo = P * (λ) * RLOAD
The bandwidth, fBW, and the rise time response, TR, are determined from the diode capacitance, CJ, and the
load resistance, RLOAD, as shown below. The diode capacitance can be lowered by placing a bias voltage
from the photodiode cathode to the circuit ground. The effect of the bias voltage vs. Diode capacitance can
be read from Figure 2.
fBW = 1/(2π * RLOAD *CJ), TR = 0.35/fBW
Related Thorlabs Products
FDS010, FDS100, PDA55, PDA155, PDA255, PDA400, WS02, TM2448
2234-S01 Rev A 10/14/97
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Thorlabs FGA10
Typical Circuit Diagram
Typical Plots
Figure 1
Figure 2
2234-S01 Rev A 10/14/97
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