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HFE409X-341
ELECTRO-OPTICAL CHARACTERISTICS (T
A
=25
o
C unless otherwise stated)
VCSEL Parameters Test Condition Symbol Min. Typ. Max. Units Notes
Optical Power Output I
F
= 7mA P
O
2.0 mW 2
Threshold Current I
TH
0.5 1.8 2.5 mA
T
A
= 0
o
C to 70
o
C
∆I
TH
-0.5 1 mA 3
T
A
= 25
o
C to 85
o
C
∆I
TH
1.7 mA 3
Threshold Current
maximum deviation from
25
o
C value
T
A
= -40
o
C to 25
o
C
∆I
TH
2.5 mA 3
Temperature at minimum
threshold current
T
O
-20 50
o
C 3
T
A
= 25
o
C
η
0.225 0.4 0.6 mW/mA 4
T
A
= -40
o
C
η
0.75 mW/mA
Slope Eciency
T
A
= 85
o
C
η
0.19 mW/mA
Slope Eciency
Temperature variation
T
A
= 0
o
C to 70
o
C
∆η/∆T
-6000 ppm/
o
C 5
Peak Wavelength I
F
= 7mA,
T
A
= 0
o
C to 85
o
C
λ
P
830 850 860 nm
λ
P
Temperature Variation
I
F
= 7mA,
T
A
= -40
o
C to 85
o
C
∆λ
P
/∆T
0.06 nm/
o
C
Spectral Bandwidth, RMS I
F
= 7mA
∆λ
0.65 nm
Laser Forward Voltage I
F
= 7mA V
F
1.8 2.0 V
Rollover P
max
4.0 mW 6
Rise and Fall Times Pavg = 2mW,
Extin ction Ratio = 10
t
r
t
f
130
150
ps 7
Relative Intensity Noise 1 GHz BW, I
F
= 7mA RIN -130 -122 dB/Hz
I
F
= 7mA , T
A
= 25
o
C R
S
25 35 50
Ω
T
A
= -40
o
C R
S
60
Ω
Series Resistance
T
A
= 85
o
C R
S
20
Ω
Series Resistance
Temperature Coecient
I
F
= 7mA,
T
A
= 0
o
C to 70
o
C
∆R
s
/∆ T
-3000 ppm/
o
C 8
Beam Divergence
θ
15 30 Degrees 9
Beam Divergence Current
Variation
∆θ/∆Ι
F
0.45 Degree/mA
Photodiode Parameters Test Condition Symbol Min. Typ. Max. Units Notes
Po = 2mW, T
A
= 25
o
C I
PD
TBD 0.025 TBD mA 10
Po = 2mW, T
A
= -40
o
C I
PD
TBD TBD 10
Monitor Current
Po = 2mW, T
A
= +85
o
C I
PD
TBD TBD mA 10
Monitor current
Temperature Variation
Po = 2mW, 0
o
C to 70
o
C
∆I
PD
/∆ T
TBD %/
o
C 10
Monitor Current Tracking Deltrk TBD 10, 11
Dark Current Po = 0 mW, V
R
= 3V I
D
20 nA
PD Capacitance V
R
= 0V, Freq = 1MHz
V
R
= 3V, Freq = 1MHz
C 75
40
100
55
pF
ELECTRICAL-OPTICAL CHARACTERISTICS
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