WS2816B-4020 is an integrated addressable RGB LED pixel for compact, programmable lighting. The controller, constant-current LED driver, signal reshaping circuit and light source are combined in one 4020 SMD package. Its 16-bit per channel (48-bit rgb) control and 10 kHz refresh architecture support smooth cascaded effects in production SMT assemblies.
Product Specifications
| Wavelength / Color Temp: | R 620-625 nm | G 522-527 nm | B 470-475 nm |
| Forward Voltage: | +3.7 to +5.5; 5 V nominal |
| Forward Current: | 20 mA total RGB output |
| Shape: | 4020 SMD side-emitting package |
| Beam Angle: | 120 degrees |
| Power: | Integrated addressable pixel LED |
| Luminous Intensity: | R 210-360 mcd | G 420-720 mcd | B 70-120 mcd |
Payment & Shipping Terms
Certifications: ROHS | FCC | CE
Features
- Integrated controller and RGB LED in one 4020 SMD package
- 5 V addressable pixel architecture
- 20 mA total RGB output constant-current LED drive
- Dual-signal breakpoint-resume transmission for improved chain reliability
- Automatic signal reshaping for stable cascaded transmission
- 16-bit grayscale per color channel
- 10 kHz PWM scan frequency
- Built-in power-on and brownout reset circuitry
- Reel packaging for automated SMT assembly
- Side-emitting optical orientation for edge-lighting designs
Applications
- Programmable LED strips and pixel modules
- Decorative and architectural lighting
- Digital signage and compact displays
- Gaming peripherals and computer lighting
- Wearable and portable lighting products
- Stage, entertainment and interactive lighting
Structure Diagram and Pinout
Detailed Technical Specifications
Key Electrical & Control Specifications
| Parameter | Symbol | Specification | Unit / Notes |
|---|---|---|---|
| Supply Voltage | VDD | +3.7 to +5.5 | V |
| Nominal Supply Voltage | VDD | 5 | V |
| LED Drive Current | IOUT | 20 | mA total |
| Operating Temperature | Topt | -40 to +85 | °C |
| Control Interface | DIN / DOUT | Single-wire return-to-zero serial data | Addressable cascade |
| Color Data | — | 16-bit per channel (48-bit RGB) | Digital grayscale |
| PWM Scan Frequency | fPWM | 10 | kHz |
RGB Optical Characteristics
| Parameter | Color | MIN. | TYP. | MAX. | Unit |
|---|---|---|---|---|---|
| Luminous Intensity | Red | 210 | — | 360 | mcd |
| Luminous Intensity | Green | 420 | — | 720 | mcd |
| Luminous Intensity | Blue | 70 | — | 120 | mcd |
| Dominant Wavelength | Red | 620 | — | 625 | nm |
| Dominant Wavelength | Green | 522 | — | 527 | nm |
| Dominant Wavelength | Blue | 470 | — | 475 | nm |
Single-Wire Data Timing
| Timing | Description | Specification |
|---|---|---|
| T0H | 0-code high level | 200ns to 320ns |
| T1H | 1-code high level | 520ns to 800ns |
| T0L | 0-code low level | 800ns to 1.2μs |
| T1L | 1-code low level | 480ns to 1μs |
| RES | Frame reset low level | At least 280 μs |
Package & Reel Packaging
| Item | Specification |
|---|---|
| Model | WS2816B-4020 |
| Package | 4020 SMD side-emitting package |
| Light Channels | Red, green and blue |
| Mounting | Surface mount (SMD) |
| Minimum Packaging Quantity | 2,000 pcs per reel |
| Shipping Package | Anti-static moisture barrier bag |
| Certifications | ROHS | FCC | CE |
Minimum packaging quantity matched to the package-size reel standard because this model is not listed in the supplied summary workbook.
Support and Services
As a manufacturer of LED packaging, we partner with you from spec selection to scaled production — expert guidance, transparent collaboration, and seamless logistics.
Single-wire addressable pixel control with regulated power, local decoupling, ESD protection and moisture-sensitive-device handling during SMT assembly.
FAQ
Q: Are you a manufacturer or trade company?
A: We are a factory in LED packaging since 2010.
Q: Can I get samples before placing larger orders?
A: Yes. Free-of-charge samples for most LEDs; freight to be borne by buyer.
Q: What is your MOQ?
A: Typically 1000pcs per LED type, except white / warm white where MOQ may differ.
Q: How long is the delivery lead time?
A: Most orders ship 7–10 days after payment confirmation; bulk and customized lead times vary.
Q: Which couriers do you use?
A: DHL / UPS / FedEx / TNT for samples and small parcels; sea/air freight for bulk.
Q: Do you support customization (pin cutting, packaging, binning)?
A: Yes. Customized manufacturing services are available for all customers.
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Email: sales@demophotech.com
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