SMC680
v 2.0 17.11.2014
Description
SMC680
is a surface mount AlGaAs LED with a typical peak wavelength of
680 nm
and radiation of
3 mW.
It comes in SMD package (ceramics) and is sealed with silicone or epoxy resin.
Maximum Ratings
Parameter
Power Dissipation
Forward Current
1
Pulse Forward Current *
Reverse Voltage
Operating Temperature
Storage Temperature
2
Lead Solder Temperature *
(T
CASE
=25°C)
Symbol
P
D
I
F
I
FP
V
F
T
CASE
T
STG
T
SLD
- 20
- 30
Values
Min.
Max.
110
50
200
5
+ 80
+ 80
+ 240
Unit
mW
mA
mA
V
°C
°C
°C
* duty=1%, pulse width = 10 µs
2
* must be completed within 3 seconds
1
Electro-Optical Characteristics
Parameter
Peak Wavelength
Half Width
Forward Voltage
Reverse Current
1
Radiated Power *
2
Radiant Intensity *
Viewing Angle
Rise Time
Fall Time
* measured by Photodyne #500
2
* measured Tektronix J-6512
1
(T
CASE
=25°C)
Values
Typ.
680
20
1.9
1.5
1.0
3.0
2.0
130
80
80
Unit
nm
nm
V
µA
mW
mW/sr
deg.
ns
ns
Symbol Conditions
λ
P
∆λ
V
F
I
R
P
O
I
E
φ
t
R
t
F
I
F
=20mA
I
F
=20mA
I
F
=20mA
V
R
=5V
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
Min.
Max.
2.3
10
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Precautions
Soldering:
•
•
•
•
•
Do avoid overheating of the LED
Do avoid electrostatic discharge (ESD)
Do avoid mechanical stress, shock, and vibration
Do only use non-corrosive flux
Do not apply current to the LED until it has cooled down to room temperature after soldering
Recommended soldering conditions:
This LED is designed to be reflow soldered on to a PCB. If dip soldered or hand soldered, its
reliability cannot be guarantee.
Nitrogen reflow soldering is recommended. Air flow soldering conditions can cause optical
degradation, caused by heat and/or atmosphere.
IR Reflow Soldering Profile
(Lead-free Solder)
Recommended Soldering Patterns
Unit: mm
Above table specifies the maximum allowed duration and temperature during soldering. It is
strongly advised to perform soldering at the shortest time and lowest temperature possible.
Cleaning:
Cleaning with isopropyl alcohol, propanol, or ethyl alcohol is recommended
DO NOT USE acetone, chloroseen, trichloroethylene, or MKS
DO NOT USE ultrasonic cleaners
Static Electricity:
LEDs are sensitive to electrostatic discharge (ESD).
Precautions against ESD must be taken
when handling or operating these LEDs. Surge voltage or electrostatic discharge can result in
complete failure of the device.
Radiation:
Those LEDs do emit
invisible light,
which is invisible and may cause cancer. Do avoid exposure
to the emitted light. It is further advised to attach a warning label on products/systems.
Operation:
Do
only
operate LEDs with a current source.
Running these LEDs from a voltage source will result in complete failure of the device.
Current of a LED is an exponential function of the voltage across it. Usage of current regulated
drive circuits is mandatory.
© All Rights Reserved
The above specifications are for reference purpose only and subjected to change without prior notice
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