2121 Addressable RGB SMD LED
2121 4-Pin Addressable SMD LEDs - Hongcheng Optoelectronics LED Manufacturer
Product Overview:
2121 is a compact top-emitting SMD LED with a 2.1×2.1mm package. It offers small size, high brightness, good color consistency and fast response.
Key Advantages:
- Small 2121 package for high-density arrays
- Top emission with uniform brightness and consistent color
- Independent RGB color control for natural color mixing
- Fast response for dynamic displays
- Brightness, wavelength, voltage and color binning available
- Suitable for automated SMD production and reflow soldering
Applications:
- Indoor LED displays and fine-pitch display modules
- RGB full-color pixel screens and dot-matrix displays
- Advertising screens, information screens and stage displays
- Smart lighting, ambient lights and decorative lighting
- Appliance panels, instruments, meters and status indicators
- Electronic toys, digital products and smart devices
Product Features:
Chip: Grade A chips from leading brands in Taiwan and mainland China provide high brightness, good color consistency, stable output and strong ESD resistance.
Gold wire: 99.99% pure gold wire bonding provides good conductivity and stable, reliable multi-chip connections.
Encapsulant: High-quality encapsulant resists sulfurization, high temperatures and lumen depreciation, improving contrast and light output consistency.
Lead frame: a precision frame with high thermal conductivity provides easy solder wetting, stable solder joints and oxidation resistance.
Packaging: vacuum-sealed moisture-resistant tape-and-reel packaging, supplied on reels for high-speed automated placement equipment.
Category: 2121 Addressable
Quick Reference: Key Optoelectronic Parameters (by Emission Color)
Test conditions: See the IF column for test current; ambient temperature 25℃. Data is taken from each model's datasheet. “—” indicates that the datasheet does not specify this item. Download the corresponding PDF for complete specifications.
| Emission Color | Part Number | Forward Voltage VF (V) | Wavelength / Color Temperature CCT | Luminous Intensity Iv (mcd) | Viewing Angle 2θ½ (°) | Test Current IF (mA) | Operating Temperature |
|---|---|---|---|---|---|---|---|
| Red | HC-IC4-B2121RGB10WGG | 1.8~2.4 | 620~625 nm | 250~450 | — | 5 | -40 ~ +85℃ |
| Pure Green | 2.8~3.4 | 520~530 nm | 500~700 | — | 5 | -40 ~ +85℃ | |
| Blue | 2.8~3.4 | 460~465 nm | 150~300 | — | 5 | -40 ~ +85℃ |
2121 Addressable RGB SMD LED A 5V addressable SMD LED with an integrated driver IC (compatible with WS2812/SK6812 single-wire serial protocols). Each LED supports individually programmable full-color addressing and cascade control, for light strips, ambient lights and pixel matrices. Supplied directly by Dongguan Hongcheng Optoelectronics Co., Ltd. (an international member of Guangyu Group, with over 20 years of LED packaging experience). Uses A-grade chips and 99.99% pure gold wire bonding, with RoHS certification. Free samples and custom IC protocols, pin configurations and refresh rates are available. Download the datasheet PDF on this page for complete electrical specifications and mounting dimensions.
Q: What are the chromaticity BIN ranges for addressable LEDs?
A: The full-color series is shipped with brightness and color binning based on CIE chromaticity coordinates. Color difference within the same batch is Δu'v'≤0.003. Custom BIN ranges are available to meet customer color-gamut requirements.
Q: What placement-machine accuracy does this LED require?
A: This product uses a 2121 package (2.1×2.1mm) with relatively large pads. Ordinary high-speed placement machines meet its needs, with no special equipment accuracy requirements. Its built-in IC and multiple-pad structure require each stencil aperture to align with its corresponding pad. Visual inspection or AOI is recommended after placement to confirm solder quality. Supports lead-free reflow soldering (peak ≤260℃/≤3s).
Product Specifications at a Glance
| Product Name | 2121 Addressable RGB SMD LED |
|---|---|
| Package: | SMD package (integrated IC) |
| Dimensions | 2.1×2.1mm |
| Mounting: | SMD surface mounting (suitable for reflow soldering) |
| Emission Color | RGB full color (integrated IC, programmable addressable effects) |
| Environmental Certification | RoHS |
| Packaging Quantity | Tape-and-reel packaging (quantity per reel is specified in the corresponding datasheet) |
| Manufacturer | Dongguan Hongcheng Optoelectronics Co., Ltd. |
| Customization: | Custom colors, brightness and wavelength binning, and encapsulants available; confirm details when requesting a quote |
| Detailed Specifications | See the datasheet PDF on this page for complete electrical parameters |
| Minimum Order Quantity (MOQ) | 1 reel (orders start at one full taped reel; see the corresponding datasheet for quantity per reel) |
| Sample Lead Time | Typically 3-4 working days |
| Volume Production Lead Time | Typically 10-15 working days |
💡 Typical Applications: Common applications include indoor LED displays and fine-pitch display modules, RGB full-color pixel screens and dot-matrix displays, advertising screens, information screens and stage display equipment, smart lighting, ambient lights and decorative lighting.
Forward Voltage and Wavelength Quick Reference by Color
Voltage varies significantly between colors in the same package. Select current-limiting resistors using the values for the specific color:
| Emission Color | Wavelength Range | Forward Voltage | Chip Material |
|---|---|---|---|
| Red | 620~630nm | 1.8~2.4V | GaASP/GaP |
| Yellow | 585~595nm | 1.8~2.4V | AlGaInP |
| Orange | 600~610nm | 1.8~2.4V | AlGaInP |
| Standard Green | 565~575nm | 1.8~2.4V | AlGaInP |
| Emerald Green | 510~520nm | 2.6~3.2V | InGaN |
| Blue | 450~470nm | 2.8~3.4V | InGaN |
| White | CCT 15000~25000K | 2.8~3.4V | InGaN + phosphor |
Q: What applications suit 2121 addressable LEDs?
A: The 2121 (2.1×2.1mm) incorporates an IC in a four-pin structure (current production part number HCIC4X-B2121RGB10WGG), suitable for pixel matrix screens, LED strips and decorative full-color projects.
Ordering and Inquiry Information
SMD models use tape-and-reel packaging (quantity per reel is subject to the corresponding datasheet), with minimum orders in full reels. Sample lead time is typically 3-4 working days; volume production lead time is typically 10-15 working days (subject to order confirmation). For volume pricing, use the inquiry link on this page or phone/WeChat 139 2571 4318. Specify the exact part number and quantity.
Selection Recommendations
Forward voltage varies considerably by color/model (commonly 1.8~3.4V). Calculate current-limiting resistors using the VF range in the selected model's datasheet, and set the reflow profile according to the corresponding datasheet.
Related Reading: LED Indicator Part Number Comparison Table (Complete 2026 Edition) ｜ Datasheet Download Center
Note: The parameters on this page were compiled against product documentation on 2026-09-17. Items not provided in a datasheet are not assigned uniform values. Refer to the datasheet for the relevant part number.
