Why are LED bulbs expensive?
After dismantling several standard A19 LED bulbs on the market, let’s discuss the true value of LED bulbs. A 12.5W LED bulb, 800 lumens, suitable for 60W traditional bulbs; the other models are equivalent to 40W traditional lamps from different brands.
After disassembling these LED bulbs, it can be found that each LED bulb has a special closing design. Unlike the heat-shrinkable film packaging of tungsten filament and CFL lamps, these LED bulbs have cool packaging. Increase the overall cost. And with the appearance as a selling point, the momentum of maintaining the high price of LED bulbs will continue. An LED bulb uses a ceramic neck and lining wings and has a glass stem, which is more expensive than plastic and metal products.
Secondly, a small printed circuit board is installed at the neck of each LED bulb lamp, which greatly improves the reliability factor of the LED. However, under high heat operating conditions, the service life of the electrolytic capacitor can be How long? The different LED driver ICs are the biggest difference between these LED bulbs. There is an LED bulb light that uses four ICs, 40 resistors, and 16 capacitors, plus a transformer and multiple diodes, which can be used for dimming the LED bulb.
Thirdly, the luminous efficiency of LED and 40WCFL is appropriate. In the case of 50lm/W~60lm/W, the luminous efficiency of an LED bulb and 40WCFL is appropriate, while the luminous efficiency of CFL is generally 560lm/10W; a CFL bulb with a price of a few dollars can be used for 8 years. The energy saved by one LED bulb is suitable for buying 2 or 3 CFL bulbs in the next 25 years. Fortunately, CFL bulbs are available in groups of 2 or 4. However, for CFL, we avoided mercury pollution at the expense of energy consumption. The LED bulb has two attractive forces: one is that it does not have a preheating time and can be lit immediately; the other is mercury-free, the rare earth elements used in the LED are very toxic, and the amount of rare earth elements used is also very small.