THORLABS M625F2 Manual

Description

Thorlabs' M625F2 Fiber-Coupled LED has a nominal wavelength of 625 nm, outputs more than 13.2 mW of
power, and is mounted to the end of a heat sink. The output is compatible with SMA fiber connectors. This LED
needs to be supplied with a constant current that must not exceed 1000 mA.

Specifications

Specification
Color
Nominal Wavelength
Test Current for Typical LED Power
Maximum Current (CW)
Bandwidth (FWHM)
Electrical Power
Typical Lifetime
Operating Temperature
(Non-Condensing)
Storage Temperature
Emitter Size
a
Risk Group
a. According to the standard IEC 62471:2006, Photobiological Safety of Lamps and Lamp Systems
a
Dominant Wavelength
LED Power Output (Ø400 µm Fiber)
LED Power Output (Ø200 µm Fiber)
Forward Voltage a
When Driven with the Test Current
a.
For multimode fiber with a Ø400 µm core and 0.39 NA (Item # FT400EMT).
b.
For multimode fiber with a Ø200 µm core and 0.22 NA (Item # FG200UCC).
c.

Operating Instructions

Be sure to provide air ventilation in order to avoid overheating, drops in optical power, and reduced lifetime. Each LED
has a characteristic switch-on behavior, which depends on the LED properties and environment conditions. An important
criterion is the heat dissipation. The M625F2 has a unique thermal and heat sink design that reduces the power decay to
a minimum.
M625F2's male connector is a standard M8 x 1 sensor circular connector. Pins 1 and 2 connect to the LED. Pins 3
and 4 are used for the internal EEPROM. Only use these connections when using a Thorlabs LED driver.
After an LED is switched on, it will warm up which can cause a decay in optical power. The heat sink of the M625F2
provides good thermal management, reducing the loss of power as the LED reaches its equilibrium temperature.
M625F2
M625F2
Symbol
λ
p
a,b P
out
a,c P
out
V
F
Fiber-Coupled LED
625 nm
Value
Red
625 nm
1000 mA
1000 mA
15 nm
2200 mW
>50 000 h
0 to 40 °C
-40 to 70 °C
1 mm x 1 mm
RG0 – Exempt Risk Group
Min Typical
620 nm 625 nm
13.2 mW 17.5 mW
- 5.7 mW
- 2.2 V
February 1, 2018
MTN005534‐S01, Rev B
Max
630 nm
-
-
-