Siemens SPL 2Fxx Technical data

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Laser Diode in TO-220 Package with FC-connector SPL 2Fxx

0.75 W cw (Class 4 Laser Product) (SFH 4874x6)

Features

•

Efficient radiation source for pulsed and cw-operation

•

Reliable InGa(Al)As strained quantum-well material

•

Small TO-220 package with efficient thermal coupling

•

Includes thermistor to control temperature/wavelength

•

Single emitting area 200 µm × 1 µm

•

FC-type connector for efficient fiber coupling

Applications

•

Pumping solid state lasers (Nd: YAG, Yb: YAG, …)

•

Medical applications

•

Laser soldering

•

Energy transmission

•

Testing and measuring applications

Type

Old Type

Wavelength

*)

(as of Oct. 1996)

SPL 2F81
SPL 2F85
SPL 2F94

*) Other wavelengths in the range of 780 nm ... 980 nm are available on request.

SFH 487406
SFH 487426
SFH 487446

808 nm
850 nm
940 nm

Maximum Ratings

T

(

= 25 °C)

A

Parameter

Symbol Values Unit

min. typ. max.

Output power (continuous wave)

1)

Output power (quasi-continuous wave)

t

(

≤ 150 µs, duty cycle ≤ 1%)

p

P

opt

1)

P

qcw

– – 0.8 W
– – 1.1 W

Ordering Code

Q62702-P368
Q62702-P1678
Q62702-P1631

Reverse voltage
Operating temperature
Storage temperature
Maximum soldering temperature, max. 5 s

1) Optical data refer to output after a fiber of 5 m length (core ∅ 125 µm, 0.35 NA, attn. 8 db/km)

V

R

T

op

T

stg

T

s

––3V
– 10 … + 60 °C
– 40 … + 70 °C
– – 250 °C

Semiconductor Group 1 02.97

Diode Characteristics

(TA = 25 °C)

SPL 2Fxx

(SFH 4874x6)

Parameter

Emission wavelength

Spectral width (FWHM)
Output power

2)

1)

1)

Differential efficiency 2) 808 nm

850 nm
940 nm

Threshold current 808 nm

850 nm
940 nm

Operating current 1) 808 nm

850 nm
940 nm

Operating voltage

1)

Symbol Values Unit

min. typ. max.

λ

peak

803
840
935

808
850
940

813
860
945

nm

∆λ 2nm

P

opt

η 0.60

0.60

0.55

I

th

0.40

0.30

0.30

I

op

1.3

1.3

1.4

V

op

0.75 W

0.70

0.70

0.60

0.45

0.40

0.35

1.5

1.5

1.6

0.85

0.80

0.70

0.55

0.50

0.40

1.8

1.8

1.8

W/A

A

A

2.0 V
Differential series resistance r
Characteristic temperature (threshold)

3)

Temperature coefficient of current
Temperature coefficient of wavelength

4)

Thermal resistance (junction → heat sink) R

1) Standard operating conditions refer to 0.75 W after 5 m of fiber (core ∅ 125 µm, 0.35 NA, attn. 8 db/km)

2) Optical power measurements refer to output from fiber

3) Model for the thermal behavior of threshold current:

4) Depending on emission wavelength

s

T

0

∂

/ ∂

I

T 0.5 %/K

op

∂λ / ∂

T 0.25 0.27 0.30 nm/K

th JA

I

T

I

) =

2

T

(

th

) × exp(

1

(

th

0.2 0.4 Ω

150 K

10 K/W

T

T

T

–

)/

2

1

0

NTC Thermistor
Parameter

Resistance at room temperature (25 °C) R

Symbol Typ. Values Unit

NTC

10 kΩ

Semiconductor Group 2