LED FILAMENT LAMP BULB 4W B TYPE NEW DEVELOPMENT

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500 pc
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10000000 pc/month

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Item specifice:

Color Temperature: 2500K-7000K LED type: EPISTAR Lamp luminous flux(lm): 400
Body material: Aluminum Alloy Base type: B22,other,E14,E26,E27 Power(W): 4W
Certification: BV,C-tick,CCC,CE,CQC,EMC,Energy Star,ETL,FCC,FDA,GOST,GS,LVD,PSE,REACH,RoHS,SAA,SASO,UL,VDE Working Temperature(℃): -370C - 550C PF: >0.5
Input voltage(V): 85-265V, 12v, 24v,36v CRI (Ra>): >80 Warranty: two years

Product Description:

Product characteristic

1.    High brightness LEDs 96pcs(4pcs COB)

2.    Long life service, lasts up to 30000hr

3.    Excellent weathering resistance, insensitive to humidity, suitable for wide range temperature

4.    Easy to install, easy to use

5.    No strobe flash, speedy start, no flicker, good for eyes

6.    Safe, energy-saving, environment friendly


 

Application Scopes

Suitable for most indoor lighting applications, such as household, hotel, shopping mall,

 supermarket, office, car park, factory, advertising box, car, vessel and other transportations, 

can significantly reduce the energy consumption; give you a green light environment

Item

Parameter 

Power

4w

LED Quantity

96pcs LEDs

Colors

Warm white, white, cool white

CCT

2900-6500K

Ra

75

Lifespan 

30000-50000 Hours

Light flux

300LM

Light efficiency

100LM/W

Glowing

360°

Material

Glass, Aluminum

Net Weight

0.032KG

Gross Weight

0.046KG1/pc

Size

55*96m 


 Technical request

Item

Units

Parameter range

Working environment

-370C - 550C

Humidity

RH

≤90%

Storage condition 

-40℃~80℃

Limited voltage

V

AC85-265V  50Hz

Protect a Grade

IP20   

 

 


LED FILAMENT LAMP BULB 4W B TYPE NEW DEVELOPMENT

LED FILAMENT LAMP BULB 4W B TYPE NEW DEVELOPMENT

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Q:What's the reason for the LED bulb strobe?
8W offline LED driver GreenPoint reference design with solid state lighting standard energy star "as an example, the sine wave regulator side flyback power conversion does not provide constant energy to the primary bias, dynamic self supply (DSS) circuit can be activated and the light induced flicker. To avoid this problem, it is necessary to allow primary bias to be discharged at each half cycle, and accordingly, the values of the capacitance and resistance that constitute the bias circuit need to be appropriately chosen.
Q:LED what is the plastic shell of the bulb? What plastic material is better? What do you need to pay attention to?
You should say that the bulb of the bulb, usually PC material.
Q:What brand of LED bulb is good in quality?
The price of these lamps is very low, but the quality is not guaranteed at all. The purpose of this article is to teach consumers to distinguish the quality of LED bulbs on the market so as not to be cheated. So, which brand LED bulb is good, choose a good brand, first of all should first understand how the quality of its products
Q:In a bulb, the ambient temperature of the LED is LED, the temperature of the air in the bulb, or the temperature of the aluminum substrate
LED work environment refers to the external work room temperature, LED lamps also have a working temperature, general LED lamp in the case of work, the external temperature is below 65 degrees is normal.
Q:What does the LED bulb patch mean?
The LED patch (SMD) is made of FPC circuit board, LED lamp and high quality silica gel sleeve. Waterproof performance, using low voltage DC power supply is safe and convenient, light colors, bright colors; outdoor use can be anti UV aging, yellowing, high temperature resistance and other advantages, the products are widely used in building lights, decorative lighting, advertising and entertainment quasi decorative lighting lighting field.
Q:What are the driving IC used in LED bulb?
Here are some of the models you want to know. You can contact me by mail and provide your detailed information and samples:Isolation without PFFT833S11 2.5W FT833A11 3-5WFT833B12 7-9W FT825 series 7-60WIsolation belt PFFT8900, 30W, FT8901 series adjustable light 30WFT8901B 7W, FT8901/2DD, DIP, built-in MOS, 24W adjustable lightNon isolation without PF:FT886A 7-24W FT883A 3-5W
Q:Can the bulb's true life reach 30000~50000 by LED?
The theory of the life of LED is one hundred thousand hours, this is not true; but the LED life is far less than one hundred thousand hours, only ten thousand hours, which is currently the most industrialized production of long life; because the quality of the LED part of the core - epitaxial wafer has not reached the ideal state, there are many problems to be solved, such as reducing the dislocation the density of epitaxial film, high quality P GaN preparation etc.
Q:How did the trademark on the LED bulb go up?
Laser printing equipment is generally printed up, so that the ridge up color is not so deep, but also can not wipe off
Q:LED what is the glue between the aluminum base of the bulb and the cooling aluminum?
It is best not to direct contact with glue, glue because the thermal conductivity of aluminum than a lot of difference, even a thin layer will reduce the heat out of the speed of the screw can be used to aluminum plate and aluminum fastening together, the contact surface is smooth, when necessary, can use some conductive silicone grease amount
Q:How does the LED bulb look good or bad?
See brightness, whether the luminous uniformity, the back of the heat is good?

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