📌 Product Overview
The XL-2835UBC-02 is a surface-mount device (SMD) LED designed by XINGLIGHT to deliver high-intensity blue light in a compact form factor. 💡 With a package size of just 2.8x3.5x0.8mm, it is ideal for high-density lighting arrays where space is at a premium. It utilizes a water-clear colloid to maximize luminous flux and light extraction efficiency.
Engineered for modern automated assembly lines, this component is fully compliant with ROHS environmental standards and suitable for standard SMT processes. 👇 It serves as a robust solution for engineers requiring reliable blue light sources, balancing performance with the physical constraints of slender luminaires and backlighting systems.
🚀 Typical Applications
Based on its optical characteristics and 120° viewing angle, the XL-2835UBC-02 is optimized for the following use cases:
- Indoor General Lighting: 💡 High-efficiency fluorescent tubes, rigid light strips, and residential downlights.
- Commercial & Signage: Illuminated advertising words and light boxes where color consistency is critical.
- Backlighting: LCD backlights for panels and indicator displays requiring uniform blue light.
- Decorative Lighting: Flexible light strips for accent lighting and ambiance creation.
📈 Key Technical Specifications
The following table outlines the electro-optical performance under standard test conditions ($T_a=25^\circ C$).
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | $I_V$ | 1150 | - | 1800 | mcd | $I_F=60\text{mA}$ |
| Dominant Wavelength | $\lambda_d$ | 450 | - | 470 | nm | $I_F=60\text{mA}$ |
| Forward Voltage | $V_F$ | 3.0 | - | 3.4 | V | $I_F=60\text{mA}$ |
| Viewing Angle | $2\theta_{1/2}$ | - | 120 | - | deg | $I_F=60\text{mA}$ |
✨ Note: The product features specific grading bins for brightness (F2-F5), voltage (M19-3 to M19-6), and wavelength (HB02-HB05) to ensure batch consistency.
🔒 Absolute Maximum Ratings & Process Limits
Exceeding these parameters may result in permanent damage. 👇 Design margins must account for these limits to ensure reliability.
| Parameter | Symbol | Max. Value | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | $P_D$ | 200 | mW | $T_a=25^\circ C$ |
| Max Continuous Forward Current | $I_F$ | 60 | mA | - |
| Peak Forward Current | $I_{FP}$ | 150 | mA | Pulse $\le 0.1\text{ms}$, Duty $\le 1/10$ |
| Max Reverse Voltage | $V_R$ | 5 | V | - |
| ESD Ability | ESD | 2000 | V | Human Body Model |
| Operating Temperature | $T_{OPR}$ | -40 ~ +85 | $^\circ C$ | - |
⚠️ Critical Warning: The Moisture Sensitivity Level (MSL) is rated at Level 3. Floor life is limited to 168 hours (one week) after opening the sealed bag before baking is required.
📦 Package, Dimensions & Assembly Notes
The component utilizes the standard 2835 footprint (2.8mm x 3.5mm), making it mechanically compatible with industry-standard pick-and-place nozzles.
- Dimensions: 2.8 (L) x 3.5 (W) x 0.8 (H) mm.
- Soldering: Suitable for infrared reflow soldering.
- Lead-Free Process: Peak temp $255^\circ C$ (+0/-5), time above $217^\circ C$ limited to 60-120s.
- Lead Process: Peak temp $235^\circ C$ (+5/-0), time above $183^\circ C$ limited to 60-150s.
- Packaging: EIA standard compliant tape and reel for automated SMT production.
🛍️ Sourcing & Supply Considerations
To ensure supply chain stability and product authenticity, consider the following:
- Bin Selection: Verify specific brightness and voltage bin codes (e.g., F5, M19-4) to match your driver design and color requirements.
- MSL Compliance: 🔒 Confirm storage conditions; if the bag has been open for more than 168 hours, baking is mandatory to prevent popcorning during reflow.
- Sample Evaluation: Always request samples from authorized distributors to verify color temperature and intensity in your specific optical assembly.
- Alternative Check: While standard 2835 packages are common, the internal phosphor and chip technology vary by manufacturer. Validate this specific model (XL-2835UBC-02) against your target reliability metrics.
❓ FAQ
Q: Can I drive this LED at 60mA continuously? A: Yes, the Absolute Maximum Rating allows for a continuous forward current of 60mA. However, ensure your PCB thermal design can dissipate the heat (200mW max) to keep the junction temperature within safe limits.
Q: What does MSL 3 mean for my production line? A: Moisture Sensitivity Level 3 means the components are sensitive to moisture. After opening the vacuum-sealed bag, you have 168 hours (7 days) to mount them before they must be baked to remove absorbed moisture, preventing damage during soldering.
Q: What is the difference between Dominant Wavelength and Peak Wavelength? A: The Peak Wavelength ($\lambda_p$) is where the spectral intensity is highest (465nm). The Dominant Wavelength ($\lambda_d$) describes the perceived color hue by the human eye (450-470nm).
Q: Is this component suitable for outdoor flexible strips? A: While suitable for flexible light strips, the water-clear colloid and standard packaging are primarily designed for indoor use. For outdoor applications, additional silicone potting or conformal coating is required to protect against UV and environmental moisture.
Q: How do I order a specific brightness grade? A: You must specify the brightness code (e.g., F4 for 1450-1600 mcd) and voltage code (e.g., M19-4) when placing an order to ensure uniformity across your lighting installation.
