Parameter Interpretation of 2835 LED Beads

Basic Parameters of 2835 LED Beads

Structural Characteristics and Competitive Advantages

The 2835 SMD LED is named after its dimensions (2.8×3.5×0.8mm). Compared with traditional 3528 LED beads, it has three major improvements:

Heat Dissipation Optimization: Copper bracket + heat sink design, thermal resistance as low as 8℃/W, luminous decay <2% after 3000 hours

Brightness Enhancement: 0.2W model has a luminous efficacy of 110lm/W, 40% higher than 3528

Strong Compatibility: Supports 3V/6V/9V wide voltage drive, suitable for power-supply-free design

Parameter Interpretation of 2835 LED Beads

1. HQ67-2120ARC (Red, Wavelength 620-630nm, Brightness 3000, Voltage 1.8-2.6V, Current 60mA)

Applicable Products: Traffic signal lights (red light), warning lights, car taillights, mechanical equipment status indicators.

• Red wavelength (620-630nm) has strong penetration in visible light and high visual warning, meeting the needs of traffic signals and safety warnings;
• Brightness 3000 (presumed unit: mcd) is moderate, suitable for long-distance recognition;
• Low voltage (1.8-2.6V) and small current (60mA) result in low power consumption, suitable for indicator scenarios requiring long-term stable operation.

2. HQ67-2120UBGC (Green, Wavelength 510-520nm, Brightness 5000, Voltage 2.8-3.6V, Current 60mA)

Applicable Products: Traffic signal lights (green light), game console indicator lights, decorative lighting.

• Green wavelength (510-520nm) has high visual clarity, and brightness 5000 (mcd) is high, suitable for display in outdoor strong light environments (such as traffic lights, large screens);
• Moderate voltage (2.8-3.6V) and current (60mA) can cooperate with red and blue LEDs to achieve RGB full-color display (such as outdoor advertising screens).

3. HQ67-2120UBC (Blue, Wavelength 460-470nm, Brightness 2800, Voltage 2.8-3.6V, Current 60mA) (Can this SMD package be used as LED beads for electronic displays?)

Applicable Products: Electronic displays (RGB modules), decorative light strips, stage lighting, auxiliary backlight for mobile phones/computers

• Blue wavelength (460-470nm) is one of the RGB primary colors, which can be combined with red and green LEDs to achieve full-color display (such as outdoor large screens, stage lighting);
• Brightness 2800 (mcd) is moderate, suitable for medium-low brightness scenarios, and voltage (2.8-3.6V) is consistent with green LEDs, facilitating unified driving of RGB modules.

4. HQ67-2120UYC (Yellow, Wavelength 585-595nm, Brightness 2800, Voltage 1.8-2.6V, Current 60mA)

Applicable Products: Warning lights (engineering vehicles, safety signs), car turn signals, instrument panel indicator lights, toy decorative lights.

• Yellow wavelength (585-595nm) is visually striking and commonly used in “attention, warning” scenarios (such as turn signals, engineering warnings);
• Low voltage (1.8-2.6V) and small current (60mA) are close to the parameters of red LEDs, allowing shared driving circuits, suitable for low-cost indicator light design.

5. HQ-2835BW1-60K-G (White, Color Temperature 6000K, Brightness 26, Voltage 2.8-3.6V, Current 60mA)

The unit of brightness “26” is lm. 6000K belongs to cool white light, and the wavelength parameter “0.31, 0.33” should be chromaticity coordinates, corresponding to cool white light.

• Applicable Products: Small backlights (such as electronic watches, calculator screens), indicator lights (home appliance standby lights), low-brightness decorative lighting.
• Cool white light (6000K) has a high color temperature, suitable for small-size backlight scenarios requiring “neutral white light”;
• Brightness is only 26lm (lumen), current 60mA, extremely low power consumption, suitable for microelectronic devices with low brightness requirements (such as watches, calculators).

Core Matching Logic

Through the combination of the above key parameters of 2835, different models of 2835 SMD LED can accurately match the needs of different scenarios such as indicator lights, displays, and lighting.

HQG LED 2835 Series Product Solutions

Product Technical Highlights

As a professional LED manufacturer, HQG Optoelectronics has the following characteristics in its 2835 LED bead series:

Material Process: Using Epistar chips +   phosphors, color rendering index (Ra) can reach 90.

Reliability Test: Passed 6000-hour LM-80 aging test, luminous decay controlled within 5%.

Customization Capability: Supports customization of color temperature (2700K-6500K) and voltage (3V-36V), with samples available in as fast as 3 days.

Typical Application Cases

Commercial Lighting: A chain supermarket renovated shelf lights with HQG 0.2W 2835 LED beads, reducing energy consumption by 20% and improving illuminance uniformity to UGR<19.

Plant Factory: 660nm deep red model combined with 450nm blue light shortens the lettuce growth cycle by 15%.

Certification Information: Products comply with CE and RoHS standards; details can be found on the official HQG website.

Selection Guide and Common Questions

Three Key Factors for Selection

1. Power Matching:
   For general lighting, 0.2W (60mA) is preferred; for high brightness requirements, 0.5W (150mA) is selected. Avoid over-power use to prevent accelerated luminous decay.
2. Color Temperature Selection:
   For home scenes, 3000K (warm white) is recommended; for office lighting, 5000K (neutral white) with color rendering index Ra>80.
3. Heat Dissipation Design:
   It is recommended to use aluminum substrate for PCB to ensure the solder joint temperature does not exceed 120℃.

Frequently Asked Questions

A1: 2835 focuses on medium power (0.2-0.5W) and is suitable for linear lighting; 5050 is a high-power integrated package (1-3W) with higher brightness but higher cost.

A2: Focus on three indicators: ① Thermal resistance (≤10℃/W); ② Color tolerance (SDCM≤3); ③ Anti-static capability (HBM≥2000V).

A: MTC Electronics (top 3 export share) and Techhong Optoelectronics (international standard compliance) are standout performers.

A3: Regular models have 2 billion pieces in stock, and the delivery cycle for bulk orders is 3-5 days.

Industry Applications and Development Trends

Distribution of Main Application Scenarios

5.2 Technical Development Trends

1. High Luminous Efficacy: Through chip structure optimization, luminous efficacy is expected to increase from the current 120lm/W to 150lm/W.
2. Intelligent Integration: Dual-color temperature and RGBW four-in-one packages have become the mainstream solution for smart homes.
3. Environmental Protection Upgrade: Lead-free packaging technology gradually replaces traditional lead-containing materials in response to the latest EU environmental standards.

Purchasing Suggestion: For bulk orders, conduct photoelectric parameter testing on sample orders, focusing on verifying luminous flux, color temperature, and thermal resistance indicators.