660nm 850nm 5050 SMD LED For Beauty Face Mask

Parameter	Conditions	Symbol	Min	Avg.	Max	Units
Forward Voltage (正向压降)	IF=20mA	VF-R660	2.0	--	2.4	V
		VF-R850	1.4		1.8
Thermal Resistance Junction To Board (热阻)		RΘJ-B	--	8	--	°C/W
Radiant Flux (光功率)		Φe-R660	10		12	mW
		Φe-R850	12		15	mW
Peak wavelength (峰值波长)		λp-R660	655		665	nm
		λp-R850	845		855
Temperature Coefficient of Forward Voltage (正向压降之温度系数)		∆VF/∆T	−−	-2	−−	mV/°C
Reverse Current (反向漏电流)	VR=5V	IR	−−	−−	10	μ A
Thermal Resistance Junction To Soldering Pad (热阻)	RΘJ-S	IF=20mA	--	10	--	°C/W
Viewing Angle [1] (发光角度)	IF=20mA	2Θ1/2	−−	120	−−	Deg

 For beauty / skincare LED face masks, the most widely used LED wavelengths are:

---

1) Red Light – 630–650 nm

Boosts collagen production

Anti-aging, reduces wrinkles

Improves skin elasticity

Brightens skin tone

Most common: 630 nm / 635 nm / 640 nm

---

2) Near-Infrared (NIR) – 810–850 nm

Deeper skin penetration

Supports skin repair

Reduces inflammation

Improves firmness

Common: 810 nm / 830 nm / 850 nm

---

3) Blue Light – 460–470 nm

Kills acne-causing bacteria

Controls oil

Anti-acne treatment

Common: 465 nm / 470 nm

---

4) Green Light – 520–530 nm

Skin soothing

Balances skin tone

Helps reduce pigmentation

---

5) Yellow/Amber – 580–600 nm

Revitalizes skin

Reduces redness

Brightening effect

---

6) Purple Light – Combination of Red + Blue

Anti-acne

Skin rejuvenation

---

7) Cyan Light – ~500 nm

Calming effect

Reduces skin sensitivity & irritation