HFE4190-441 Finisar Corporation, HFE4190-441 Datasheet - Page 4

• Manufacturer Part Number: HFE4190-441
• Description: Laser Diode VCSELs-LD 860nm 3-Pin LC TOSA
• Manufacturer: Finisar Corporation
• Type: VCSELs-LDr

Specifications of HFE4190-441

• Package: 3LC TOSA
• Maximum Dark Current: 20 nA
• Laser Reverse Voltage: 5 V
• Wavelength: 860 nm

HFE419X-441
NOTES
1.
2.
3.
4.
5.
TYPICAL PERFORMANCE CURVES
Emitted Power vs. Current: Power varies approximately
linearly with current above threshold.
Reliability is a function of temperature, see
www.finisar.com/aoc.php for details.
For the purpose of these tests, I
Threshold current varies as (T
increase or decrease with temperature, depending upon
relationship of T
proportional to the threshold at T
Slope efficiency is defined as ∆P
To compute the value of Slope Efficiency at a temperature
T, use the following equation:
η(T) ≈ η(25 o C)*[1+(∆η/∆T)*(T-25)]
I th
A
Typical operating current / power
to T
O
η
2.5GBPS 850NM VCSEL
. The magnitude of the change is
Current
A
– T
F
O
is DC current.
/∆I
O
O
Pmax
.
)
2
F
. It may either
.
6.
7
8.
Threshold Current vs. Temperature: Threshold current varies
parabolically with temperature; thus it can be nearly constant
for a limited temperature range.
Rise and fall times specifications are the 20% - 80%. Most
of the devices will measure <135ps fall time. Rise and fall
times are sensitive to drive electronics..
To compute the value of Series Resistance at a
temperature T, use the following equation:
R
Monitor current tracking is defined as follows:
Deltrk
S
(T) ≈ R
=
S
I
I
(25 o C)*[1+∆R
PD
PD
(P
(P
O
O
I
TH
=
=
0.75mW)
0.45mW)
I
Temperature
MIN
S
/∆T)*(T-25)]
T
[1.1×10
MIN
/
/
0.75mW
0.45mW
, I
MIN
-4
(T-T
MIN
)
2
+1]