Specifications of VCT-F85A4X High Speed VCSEL Diode

Features	Picture
• Industry standard TO-46 package with flat window glass.   • Optimized for fiber optical communication.    • With attenuating coating and monitoring PD.   • Low dependence of electrical and optical characteristic over temperature.   • Symmetrical beam.   • High coupling efficiency to multi-mode fibers.   • Speed > 1 GHz.

ELECTRO-OPTICAL CHARACTERISTICS: (Tc=25ºC)

Parameter	Symbol	Min.	Typ.	Max.	Unit	Test Conditions(1)
Lasing Wavelength	lp	830	850	860	nm	IF=12 mA(2)
Output  Power	Po	1	2	3	mW	IF=12 mA
Threshold Current	Ith		3	6	mA	CW
Operating Current	Iop		12		mA	Adjustable to establish 1.5 mW output power
Slope Efficiency	h		0.25		mW/mA	IF=12 mA(3)
Forward Voltage	VF	1.7	1.9	2.2	V	IF=12 mA
Breakdown Voltage	VBD	10	15		V	IR=10 mA
Series Resistance	Rs		30		W	IF=12 mA
Beam Divergence	q		8		deg	IF=12 mA(4)
Monitor Current	IM	50	100	300	mA	VR=5 V, Po = 1.5 mW

Notes:
1.All parameters except mentioned are measured in I _F =12 mA, 25°C, CW.
2.Higher power can be provided under request.
3.Slope efficiency are defined as DP/(12-I_th ) at 25°C.
4.Beam divergence is defined as the light intensity Full Width at its Half Maxima (FWHM).

THERMAL CHARACTERISTICS:

Parameter	Symbol	Min.	Typ.	Max.	Unit	Test Conditions
Thermal Resistance	Rth		900		°C /W	TA= 25 oC
Ith Temperature Variation	D Ith	-1.0		+1.0	mA	TA= 0 to 70 oC
VF  Temperature Coefficient	DVF/DT	-3.5	-2.5	-2.0	mV/°C	TA= 0 to 70 oC, IF=12 mA
h Temperature Coefficient	Dh/DT		-0.15		%/oC	TA= 0 to 70 oC, IF=12 mA
lp Temperature Coefficient	Dlp/DT		0.06		nm/oC	TA= 0 to 70 oC, IF=12 mA

ABSOLUTE MAXIMUM RATINGS:

Parameter	Min.	Max.	Unit	Test Conditions
Storage Temperature	-40	125	°C
Operating Temperature	-40	85	°C
Lead Solder Temperature		260	°C	10 seconds
Continuous Forward Current		40	mA
Continuous Reverse Voltage		10	V

 

OUTLINE DIMENSIONS: Unit: mm	PINOUT: VCT-F85A41	VCT-F85A42

Fig. 1 Typical Optical Characteristics	Fig. 2 Typical Electrical Characteristics
Fig. 3 Spectrum When Driving Current 12 mA	Fig. 4 Temperature Dependence of Threshold Current

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