📌 Product Overview
The XL-2835UBC-05 is a high-performance Blue SMD LED designed by XINGLIGHT for advanced illumination and backlighting tasks. 💡 With a compact 2.8x3.5x0.8mm outline, it integrates a water-clear colloid to maximize light output while maintaining a low profile.
This component is specifically engineered for high-density environments like LCD backlights and flexible light strips. 👇 Its design focuses on balancing high luminous intensity (up to 4500 mcd) with robust thermal dissipation, ensuring reliability in automated SMT production lines.
💡 Typical Applications
Based on its 455-470nm wavelength and high intensity, this model is optimized for precision lighting scenarios:
- Commercial Display: Ideal for advertising light boxes and illuminated signage where consistent color rendering is crucial.
- LCD Backlighting: Provides uniform blue light for display panels and indicator lights.
- Decorative Lighting: suitable for flexible light strips and decorative fixtures requiring a compact footprint.
- General Indoor Illumination: Effective for downlights and tubes where space is constrained.
📊 Key Technical Specifications
The following electrical and optical characteristics are measured at $T_a=25^\circ C$ to help engineers assess performance windows:
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | $I_V$ | 3200 | - | 4500 | mcd | $I_F=150\text{mA}$ |
| Dominant Wavelength | $\lambda_d$ | 455 | - | 470 | nm | $I_F=150\text{mA}$ |
| Forward Voltage | $V_F$ | 2.8 | - | 3.4 | V | $I_F=150\text{mA}$ |
| Viewing Angle | $2\theta_{1/2}$ | - | 120 | - | deg | $I_F=150\text{mA}$ |
💡 Note: Bin codes (G3-G6 for brightness, HB03-HB05 for wavelength) allow for precise selection consistency in mass production.
🚨 Absolute Maximum Ratings & Process Limits
Exceeding these parameters risks permanent damage. 👇 Design margins must account for these strict limits ($T_a=25^\circ C$):
| Parameter | Symbol | Max. Value | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | $P_D$ | 500 | mW | |
| Max Forward Current | $I_F$ | 150 | mA | Continuous operation |
| Peak Forward Current | $I_{FP}$ | 300 | mA | Pulse width $\le 0.1\text{ms}$ |
| Max Reverse Voltage | $V_R$ | 5 | V | |
| ESD Ability | ESD | 2000 | V | Human Body Model |
| Operating Temperature | $T_{OPR}$ | -40 ~ +85 | $^\circ\text{C}$ |
🔒 Critical Warning: The soldering temperature must not exceed $260^\circ\text{C}$ for longer than 6 seconds to prevent package delamination.
📦 Package, Dimensions & Assembly Notes
The XL-2835UBC-05 utilizes a standard 2835 SMD form factor, ensuring compatibility with modern pick-and-place machinery.
- Dimensions: The outline measures $2.8 \times 3.5 \times 0.8\text{mm}$ (L x W x H).
- Moisture Sensitivity: Classified as MSL 3. Components must be baked according to J-STD-033 if exposed to ambient moisture before reflow.
- Soldering Guidelines:
- Lead-Free Process: Peak temp $255^\circ\text{C}$ ($+0/-5$), time above $217^\circ\text{C}$: 60-120s.
- Lead Process: Peak temp $235^\circ\text{C}$ ($\pm 5$), time above $183^\circ\text{C}$: 60-150s.
- Packaging: EIA standard compliant for automated tape feeding.
🚀 Sourcing & Supply Considerations
When integrating the XL-2835UBC-05 into supply chains, consider the following to ensure quality and availability:
- Bin Consistency: Verify specific brightness (G-code) and voltage (N-code) bins to maintain uniformity across large batches.
- Authenticity: Source exclusively through authorized XINGLIGHT channels to avoid counterfeits that lack the specified ROHS compliance.
- Sample Evaluation: Request pre-production samples to validate the $150\text{mA}$ drive current thermal performance in your specific heatsink design.
- Lead Time: Plan for standard EIA packaging delivery times and confirm stock for high-volume commercial lighting orders.
❓ FAQ
Q: What is the typical forward voltage for this blue LED? A: The typical forward voltage ranges from 2.8V to 3.4V when driven at the rated current of 150mA. Designers should use the Max value (3.4V) for circuit sizing to ensure compatibility across all voltage bins (N13-3 to N13-5).
Q: Can this component be used in a lead-free reflow soldering process? A: Yes, it is designed for infrared reflow. For lead-free processes, the peak temperature should be 255°C ($+0/-5$), with the time exceeding 217°C kept between 60 and 120 seconds.
Q: What does MSL 3 mean for assembly? A: MSL 3 (Moisture Sensitivity Level 3) means the components are sensitive to moisture. If the floor life is exceeded (usually 168 hours at $<30^\circ\text{C}/60%\text{RH}$), baking is required before reflow soldering to prevent "popcorning" or internal cracking.
Q: What is the viewing angle of the XL-2835UBC-05? A: The typical viewing angle ($2\theta_{1/2}$) is 120 degrees. This wide angle makes it suitable for backlighting and area lighting applications where uniform light diffusion is preferred over a focused spot.
Q: How is the brightness sorted? A: Brightness is sorted into specific Bin Codes (G3 through G6). For example, G3 covers 3200-3500 mcd, while G6 covers 4100-4500 mcd. Selecting a single bin code ensures visual uniformity in the final product.
Q: What is the maximum current I can drive this LED with? A: The Maximum Continuous Forward Current is 150mA. While it can handle a peak pulse of 300mA, exceeding 150mA continuously will likely degrade the LED lifespan or cause immediate thermal failure.
