OSRAM LED bulbs large dismantling

The sample of the same way for the purchase of Jingdong mall, procurement is genuine OSRAM.

Packaging articles

OSRAM packaging for the front window processing, the bottom is bare, can directly see the E27 interface.

Clearly marked on the packaging: photoelectric color parameters, and the replacement of the traditional incandescent power, indicating that life can be used for 15 years, with an average of about 2.7 hours a day.

There was a similar energy efficiency label on the packaging, but it did not indicate which energy efficiency standard.

Test parameters

Test data: using the integral ball test system to measure the photoelectric parameters of the bulb.

According to the data, the basic parameters meet the requirements. The power is lower than the nominal value of more than 5%, PF value greater than 0.5, which is worthy of praise. Luminous flux and color tolerances meet the standard range.

Whole lamp dismantling

1, packing box

2, paper tray

3, lampshade (glass material)

4, lamp body (plastic)

5, aluminum heat transfer plate

6, aluminum powder

7, lamp board fixed screw *2

8, light board PCB

9, power

10, lamp holder

Component description

Lamp shade: use glass bubble, through glue and lamp body plastic parts assembly combination.

The surface is smooth, matte surface effect, mainly to make the light more soft. Through the actual test found that the lampshade transmittance: 0.93, in line with publicity.

However, to note that the glass lampshade, should pay special attention to packaging, or in transit will be damaged.

Lamp body: aluminum shell structure with plastic material. The aluminum shell is covered with plastic, and the external insulation is better.

The heat generated by the LED is transferred to the aluminum shell structure through the aluminum heat transfer plate, and then conducts the heat exchange with the air, and the heat transfer path is long, and the heat dissipation efficiency of the plastic is low.

Lamp holder: E27 lamp socket for international standard size. The material was found not to use copper nickel plating, but the aluminum material.

Through the actual anatomy of the lamp cap is white, there is no copper component. Following figure:

Core components - light source components

LED: using SMD56306 devices, the internal packaging of a chip, there is no zener diode two. According to the characteristics of the device pad and the chip, the LED device supplier is initially inferred to be a Taiwanese manufacturer. The actual test case of LED welding electrode temperature: LED positive temperature of 57 degrees, LED negative temperature of 58 degrees, natural convection environment. Ambient temperature of 19 degrees.

PCB: the thickness of 1.0mm aluminum substrate, and aluminum heat transfer plate contact surface

Not coated with thermal grease, PCB bottom surface and the heat transfer plate leveling treatment.

LED test data are as follows:

Core components - power

Power supply: through analysis, it is found that the power supply topology is non isolated switching power supply. IC surface printed: AJM4AB words, failed to identify the producer information. This is the 4 lamps only using open source lighting.

Electrolytic capacitor production enterprises: edward.

PCB uses a single glass fiber board, power supply production process first reflow soldering, and then wave soldering using two welding.

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