We packaged these 680nm LED bare die with 3.5*2.8*1.9mm SMD LED case. The wavelength distribution of each wavelength of light in this beam is not necessarily symmetrical with the boundary of lambda λp. What we feel is the comprehensive result of the action of each wavelength. It corresponds to a single wavelength of light. The wavelength value is lambda λD. As we know, there will have some symbol will show in the LED datasheet : "λp" and "λD". Then what is that mean?  Usually you see a beam of light, it is not a single wavelength of light, it is composed of a combination of many wavelengths. The energy of the wavelength of light is larger than that of other wavelengths, then this wavelength is the peak wavelength of the beam. On the wavelength distribution curve, a vertical line between the abscissa and the curve divides the area under the curve into two equal sides. The vertical corresponding wavelength value is lambda λD.

                                                                                   -Dimension Parameters -  

These SMD LED case are also available for  IR LED, UV LED, Blue SMD LED, Red SMD LED, Amber LED ect.

- Emitting Color -

- Electrical Parameters -

Parameter	Symbol	Rating
Power Dissipation	Pd	250mw
Pulse Forward Current	IFP	300mA
Forward Current	IF	100mA
Reverse Voltage	VR	5V
Junction Temperature	Tj	115°C
Operating Tempertature	Topr	-40 - +80°C
Storage Tempertature	Tstg	-40 - +100°C
Soldering Temperature	Tsol	260°C
Electro-Static-Discharge(HBM)	ESD	3000v
Warranty	Time	5Years
Antistatic bag	Piece	2000Bag
*Pulse Forward Current Condition:Duty 1% and Pulse Width=10us.
*Soldering Condition:Soldering condition must be completed with 3 seconds at 260°C

Parameter	Symbol	Min	Typ	Max	Unit	Test Condition
Luminous Intensity	IV	0.2	0.3	0.5	lm	IF=20mA
		0.5		1		IF=50mA
			1.5			IF=100mA
Viewing Angle	2q1/2		120		deg	IF=100mA
Peak Wavelength	λp	680	690	695	nm	IF=100mA
Spectral Bandwidth	Dl		45		nm	IF=100mA
Forward Voltage	VF	1.8	2.0	2.4	V	IF=20mA
		1.9	2.2	2.5		IF=50mA
			2.5			IF=100mA
Reverse Current	IR			5	uA	VR=5V
*Luminous Intensity is measured by ZWL600.
*2q1/2 is the off-axis angle at which the luminous intensity is half the axial luminous intensity.
*lD is derived from the CIE chromaticity diagram and represents the single wavelength which defines the color of the device.

- Golden Wire Connection -

* In order to keep every one of LED's long lifespan, BestLED factory use high pure gold wire for inside circuit connection

- Packing-

* In order to keep every one of LED's long lifespan, BestLED factory use high pure gold wire for inside circuit connection

-Application-

- Production -

- Use -