Bulb (Omnidirectional Light Distribution) / C21BB-IE

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Product Features

●Environmentally-friendly and energy saving

●Safe to use, easy replacement

●Optimized spectrum which is safe to the human eye

●Constant current control, stable and reliable

Size Chart(mm)

Bulb (Omnidirectional Light Distribution) / C21BB-IE

Light Distribution Curve

Q: LED bulb PC, will the white cover affect the color temperature of the finished lamp?: Our company is doing LED lamps, about the color temperature has indeed been deviation, we call this phenomenon called drift. But there will be no 6000K drift, and there are two possibilities for you

Q: Ordinary lamp LED bulb can?: No problem, the heating LED bulb is mainly aluminum shell above on the lamp body, a lamp holder will not affect the interface, and the heating temperature does not exceed 60 degrees, and the plastic cap interface at least 160 degrees above the melting point, so is not affected on the lamp interface, you can rest assured that use

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: Seeking the production process of LED bulb... Thanks: First of all, of course, the preparation of materials, the specific operation of the lamp to practice, each lamp has different methods of assembly, there are different work instructions. Only through practice can we write good and practical processes. Figure is a flow chart of MR16 assembly.

Q: What's the cause of the noise during the aging of LED bulb bulbs?: This should be the power problem. It's easy to make a noise because there are so many parts of the power supply.

Q: LED what kinds of screw bulbs are there?: LED bulb adopts the existing method of incandescent lamp interface, the general screw is E27E14E40 (three). E for screw holes, figures for size, diameter, size. The most commonly used are the E27 sizes, and the E14 is used in small bulbs, such as refrigerators and E40, for larger power.

Q: What are the driving IC used in LED bulb?: MT7930, LM3445MM do bulb bulb, the effect is also ok.

Q: What are the requirements of the LED series inspection specification for bulb bulbs?: Insulation resistance: the lamp should not be placed for 48 hours in the damp box with relative humidity of hours. The air temperature in the box shall be controlled at any value between 20~30 degrees centigrade, and the temperature difference is within 1 degrees. The insulation resistance shall be measured in the wet box. Now the DC voltage on the lamp is about 500V. After 1min, the insulation resistance test will begin. The insulation resistance between the lamp holder, the current carrying metal parts and the accessible lamp parts shall be no less than 4M ohms.

Q: LED can the bulb be used in the bathroom?: Yes, the bulb may is waterproof and dustproof with protection

Q: What does "A19" mean in LED A19 bulb?: A represents the bubble type, A hemisphere bubble 19, and the back figure indicates the bubble size (mm in diameter)

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