HFE4082-321 Finisar Corporation, HFE4082-321 Datasheet - Page 4

• Manufacturer Part Number: HFE4082-321
• Description: Laser Diode VCSELs-LD 860nm 1.2mW 3-Pin TO-46
• Manufacturer: Finisar Corporation
• Type: VCSELs-LDr

Specifications of HFE4082-321

• Package: 3TO-46
• Maximum Optical Output Power: 1.2 mW
• Maximum Optical Output Power Range: 200 to 2 uW to mW
• Wavelength: 860 nm
• Maximum Dark Current: 20 nA
• Laser Reverse Voltage: 5 V

HFE408X-321
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.
Operating power is set by the peak operating current
I
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
PEAK
=I
I th
BIAS
+I
MODULATION
A
Typical operating current / power
to T
η
O
. The magnitude of the change is
.
Current
∆
A
P
– T
F
O
is DC current.
O
/
O
Pmax
∆
.
)
2
I
. It may either
F
.
1.25GBPS 850NM VCSEL TO-46 PACKAGE
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 <200ps fall time. Rise and fall
times are sensitive to drive electronics.
Beam divergence is defined as the total included angle
between the 1/e
To safeguard the VCSEL from current spike damage, short
the VCSEL anode and cathode to each other during
photodiode BVR verification testing. Additionally to
safeguard the PIN photodiode, limit the photodiode
reverse voltage in accordance with the absolute
maximum rating.
I
TH
2
intensity points.
I
MIN
Temperature
T
[1.1×10
MIN
, I
MIN
-4
(T-T
MIN
)
2
+1]