Siemens SFH487406, SFH487426, SFH487446, SPL2F81, SPL2F85 Datasheet

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 *)			Ordering Code
		(as of Oct. 1996)
SPL 2F81		SFH 487406		808 nm			Q62702-P368
SPL 2F85		SFH 487426		850 nm			Q62702-P1678
SPL 2F94		SFH 487446		940 nm			Q62702-P1631
*) Other wavelengths in the range of 780 nm ... 980 nm are available on request.
Maximum Ratings
(TA = 25 °C)
Parameter			Symbol			Values			Unit
					min.	typ.		max.
Output power (continuous wave) 1)			P		–	–		0.8	W
			opt
Output power	(quasi-continuous wave) 1)		P		–	–		1.1	W
(tp ≤ 150 μs, duty cycle ≤ 1%)			qcw
Reverse voltage			VR		–	–		3	V
Operating temperature			Top		– 10	…		+ 60	°C
Storage temperature			Tstg		– 40	…		+ 70	°C
Maximum soldering temperature, max. 5 s			Ts		–	–		250	°C

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

Semiconductor Group

1

02.97

SPL 2Fxx

(SFH 4874x6)

Diode Characteristics

(TA = 25 °C)

Parameter		Symbol		Values		Unit
			min.	typ.	max.
Emission wavelength 1)		λpeak	803	808	813	nm
			840	850	860
			935	940	945
Spectral width (FWHM) 1)		Δλ		2		nm
Output power 2)		P		0.75		W
		opt
Differential efficiency 2)	808 nm	η	0.60	0.70	0.85	W/A
	850 nm		0.60	0.70	0.80
	940 nm		0.55	0.60	0.70
Threshold current	808 nm	Ith	0.40	0.45	0.55	A
	850 nm		0.30	0.40	0.50
	940 nm		0.30	0.35	0.40
Operating current 1)	808 nm	I	1.3	1.5	1.8	A
	850 nm	op	1.3	1.5	1.8
	940 nm		1.4	1.6	1.8
Operating voltage 1)		V		2.0		V
		op
Differential series resistance		rs		0.2	0.4	Ω
Characteristic temperature (threshold) 3)		T0		150		K
Temperature coefficient of current		∂Iop/ ∂T		0.5		%/K
Temperature coefficient of wavelength 4)		∂λ / ∂T	0.25	0.27	0.30	nm/K
Thermal resistance (junction → heat sink)		Rth JA		10		K/W

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: Ith(T2) = Ith(T1) × exp(T2 – T1)/T0

4)Depending on emission wavelength

NTC Thermistor

Parameter	Symbol	Typ. Values	Unit
Resistance at room temperature (25 °C)	RNTC	10	kΩ

Semiconductor Group

2