What is the difference between 2835, 5050, and 3030 SMD LEDs?

These numbers refer to the package size in tenths of a millimetre (e.g. 2835 = 2.8mm × 3.5mm). 2835 is the most common modern SMD LED for strip lights and backlighting — thin profile (0.8mm height), efficient, available in a wide wattage range (0.2W to 0.5W typical). 5050 is a larger package (5.0mm × 5.0mm, typically 3 LED chips per package for RGB operation) — used in colour-changing LED strips; each 5050 chip is effectively three LEDs (RGB) in one housing. 3030 is a high-power SMD package used in high-efficiency streetlights, commercial lighting fixtures, and automotive lighting — typically 1W+ per package with high thermal management requirements. For LED strip light procurement, specify voltage (12V or 24V), LED density (LEDs per metre), wattage per metre, colour temperature (for white: 2700K warm white, 4000K neutral, 6500K cool white), CRI (80+ recommended for display and retail applications), and IP rating for the intended installation environment.

What is a typical MOQ for wholesale LED modules and display screens from China?

SMD LED components (tape-and-reel): 1,000–10,000 pieces minimum per SKU for standard commodity LEDs; 500–1,000 pieces for specialised LEDs. LED strip lights (finished product): 100–500 metres minimum per specification (voltage, density, colour). TFT LCD modules (standard sizes, e.g. 2.4", 3.5", 5", 7"): 50–200 pieces minimum from stock; custom displays with tooling: 500–2,000 pieces minimum. OLED modules (standard 0.96", 1.3" I²C modules): 100–500 pieces. Industrial HMI panels: 10–50 units for standard models; custom panels require NRE investment. LED matrix panels for advertising signage (P3, P5, P10 outdoor pitch): 10–50 panels per order.

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LED and display product categories overview

LED and display products span a broad spectrum: SMD LED components — 0402, 0603, 0805, 3528, 5050, 2835, 3030 SMD LEDs in single-colour (red, green, blue, white, IR, UV), bicolour, and RGB configurations; used for indication, backlighting, display, and illumination; key specifications include luminous intensity (mcd), forward voltage (Vf), forward current (If), wavelength (dominant/peak nm), and viewing angle (half-angle); LED modules and assemblies — LED strip lights (flexible PCB-based strips with SMD LEDs, 12V or 24V, waterproof or non-waterproof — IP20/IP44/IP65/IP67), rigid LED bar modules, LED panel modules for backlighting, and high-power LED modules for industrial lighting; TFT LCD display modules — Thin Film Transistor LCD panels with integrated backlight, driver IC, and flex cable, available in 1" to 32"+ sizes, parallel (MCU 8/16-bit) or serial (SPI, I²C) interfaces, with touch overlay options (resistive or capacitive); OLED display modules — organic LED panels offering superior contrast, wide viewing angle, and thin profile vs TFT LCD; available in monochrome (0.91", 0.96", 1.3" SSD1306 I²C modules are ubiquitous in electronics prototyping) and colour (SSD1351, ST7789 based) variants; e-Paper (electronic ink) display modules — ultra-low power bistable displays that retain image without power, used in electronic shelf labels, smart cards, and IoT displays; and industrial HMI (Human Machine Interface) panels — ruggedised LCD/TFT displays with industrial temperature range, vibration resistance, and optionally integrated touchscreen and controller for PLC/SCADA applications.

LED binning, colour consistency, and CE/FCC compliance

LED colour and brightness consistency is critical for applications requiring uniform appearance across multiple units (LED signage, backlighting, architectural lighting). LED binning is the process of sorting LEDs into bins based on measured forward voltage (Vf), luminous intensity, and dominant wavelength — ensuring that units from the same bin are visually and electrically consistent. ANSI/NEMA bin nomenclature (e.g. 5700K, 80 CRI) is used for white LEDs in lighting applications; Munsell colour system bins are used for coloured LEDs. Major Chinese LED chip manufacturers (Sanan Optoelectronics, Epitop, HC Semitek) produce LED chips in standardised bins; LED module assembly manufacturers (many in Shenzhen's Baoan and Nanshan districts) purchase binned chips and assemble modules to specification. For wholesale buyers procuring LED strips and modules for retail or architectural use, always specify the required bin code range (e.g. CCT within ±200K, CRI ≥80) in the purchase specification. For CE and FCC compliance of LED modules and drivers: LED luminaires (complete lighting fittings) require CE marking under the Low Voltage Directive (LVD) and EMC Directive, plus the Ecodesign Regulation for energy performance. LED strip lights without integrated driver are typically not independently CE-marked but must be used with a CE-marked driver. FCC Part 15 applies to LED products generating RF emissions in the US market.

LED and display product categories overview

LED binning, colour consistency, and CE/FCC compliance

LED与显示模块批发供应商

LED and display product categories overview

LED binning, colour consistency, and CE/FCC compliance

LED与显示模块批发供应商

LED and display product categories overview

LED binning, colour consistency, and CE/FCC compliance

Frequently asked questions

What is the difference between 2835, 5050, and 3030 SMD LEDs?

What is a typical MOQ for wholesale LED modules and display screens from China?

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