📌 Product Overview
The XL-3528UBC is a standard 3528 package SMD LED designed by XINGLIGHT to deliver stable blue illumination. 💡 It features a transparent water colloid that optimizes light transmission while maintaining a compact footprint. This component is specifically engineered for Surface Mount Technology (SMT) automated production lines, ensuring efficiency in high-volume manufacturing.
Target applications range from indoor auxiliary lighting to decorative signage. ✨ The design focus here is on optical consistency and thermal stability; the device is compliant with ROHS environmental standards and offers a reliable luminous intensity range suitable for commercial lighting modules.
🚀 Typical Applications
Based on its 120-degree viewing angle and dominant wavelength of 455-470nm, the XL-3528UBC is ideal for environments requiring wide-angle blue light:
- Indoor & Auxiliary Lighting: Providing ambient backlighting for residential and commercial spaces.
- Advertising Modules: High-brightness source for light boxes and signage channels.
- Jewelry & Counter Display: Enhancing the visual appeal of retail merchandise with cool-toned lighting.
- Luminescent Characters: Reliable illumination for channel letters and decorative fixtures.
📊 Key Technical Specifications
💡 The optical performance of the XL-3528UBC is categorized by specific bin codes to ensure uniformity in batch production.
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | Iv | 400 | - | 550 | mcd | IF = 20mA |
| Dominant Wavelength | λd | 455 | - | 470 | nm | IF = 20mA |
| Peak Wavelength | λp | - | 465 | - | nm | IF = 20mA |
| Forward Voltage | VF | 2.8 | - | 3.4 | V | IF = 20mA |
| Viewing Angle | 2Ø1/2 | - | 120 | - | deg | IF = 20mA |
| Reverse Current | IR | - | - | ≤ 5 | μA | VR = 5V |
🔒 Absolute Maximum Ratings & Process Limits
⚠️ Exceeding these ratings may cause permanent device failure. Designers must strictly adhere to these limits to ensure reliability.
| Parameter | Symbol | Value | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | PD | 70 | mW | |
| Max Continuous Forward Current | IF | 20 | mA | |
| Peak Forward Current | IFP | 80 | mA | Pulse ≤ 0.1ms, Duty ≤ 1/10 |
| Max Reverse Voltage | VR | 5 | V | |
| ESD Ability | ESD | 2000 | V | |
| Operating Temperature | TOPR | -40 ~ +85 | °C | |
| Storage Temperature | TSTR | -40 ~ +85 | °C | |
| Soldering Temp/Time | TSOL | 260 | °C | ≤ 6 Seconds |
📦 Package, Dimensions & Assembly Notes
The XL-3528UBC features a compact outline with dimensions of 3.5mm x 2.8mm x 1.9mm. 👇 It utilizes EIA standard packaging, making it compatible with modern pick-and-place equipment.
- Soldering Process: Suitable for both infrared reflow and manual soldering.
- Moisture Sensitivity: Classified as MSL Level 3.
- Precaution: Ensure proper baking before reflow if the moisture barrier bag has been opened.
- Reflow Profile:
- Lead-Free: Max temp 255°C (Time above 217°C: 60-120s).
- Lead Process: Max temp 235°C (Time above 183°C: 60-150s).
🛒 Sourcing & Supply Considerations
When integrating the XL-3528UBC into your supply chain, consider the following to guarantee quality and availability:
- Bin Sorting: Specify brightness (E2-E4) and voltage (N13) codes to match your driver design and optical requirements.
- Authenticity: Verify packaging for XINGLIGHT branding and EIA standard labels to avoid counterfeit components.
- Sample Testing: Always request samples from the specific batch to validate the color temperature and intensity in your actual housing.
- Lead Time: Plan for potential delays on specific bins; consult your distributor for stock availability.
❓ FAQ
Q: What is the typical forward voltage for this LED?
A: The forward voltage ranges from 2.8V to 3.4V at a standard forward current of 20mA. Designers should use the maximum value (3.4V) for circuit safety calculations.
Q: Can this component be used for outdoor applications?
A: While the storage and operating temperatures support a wide range (-40°C to +85°C), the XL-3528UBC is primarily designed for indoor use (e.g., shops, counters). For outdoor use, additional waterproofing (IP rating) measures are required.
Q: What does MSL Level 3 mean for assembly?
A: MSL (Moisture Sensitivity Level) 3 means the components must be mounted within 168 hours (one week) of opening the vacuum-sealed bag. If exposed longer, they must be baked to prevent "popcorning" damage during soldering.
Q: How is the brightness graded?
A: Brightness is sorted into bins E2 (400-450 mcd), E3 (450-500 mcd), and E4 (500-550 mcd). Selecting the correct bin ensures uniform lighting across your application.
Q: What are the cleaning precautions for this LED?
A: Do not use ultrasonic cleaning. If cleaning is necessary, use isopropyl alcohol and ensure the solvent does not penetrate the internal structure of the LED package.
