Electronic SMD LED Sales, Ordering, Price, Manufacturer [Nanjing Wanshi Bo Electronic Co., Ltd.] 1. Brightness - The brightness of LEDs varies, with different brightness levels affecting price. LEDs for lighting applications should meet Class I laser safety standards. 2. Anti-static Ability - LEDs with strong anti-static ability have longer lifespans and are thus more expensive. Typically, LEDs with anti-static capability greater than 700V are used for lighting fixtures. 3. Wavelength - LEDs with consistent wavelengths have uniform colors; if uniform color is required, the price is higher. Manufacturers without a spectrometer for color separation find it difficult to produce pure color products. 4. Leak Current - LEDs are unidirectional conductive发光 bodies; reverse current is referred to as leakage. LEDs with high leakage current have shorter lifespans and are cheaper. 5. Beam Angle - Different LEDs have different beam angles depending on their use. Special beam angles are more expensive, such as full diffused angle, which is higher in price. 6. Lifespan - Different qualities are primarily determined by lifespan, which is determined by lumen depreciation. Lower lumen depreciation results in longer lifespan and higher price. 7. Chip - The light-emitting body of LEDs is a chip, with different chips having significantly different prices. Chips from Japan and the US are more expensive, while those from Taiwan and domestically produced are generally cheaper. 8. Chip Size - Chip size is represented by the edge length, with larger chips indicating better quality than smaller ones. Price is directly proportional to chip size. 9. Material - The material for standard LEDs is usually epoxy resin. LEDs with added UV resistance and fire retardants are more expensive. High-quality outdoor LED lighting should be resistant to UV and fire.