📌 Product Overview
The XINGLIGHT XL-3528UWC is a standard 3528 SMD LED designed for versatile illumination in commercial and retail environments. 💡 While typically categorized under indoor lighting, its real design value lies in the balance of luminous flux (up to 10lm) and wide-angle viewing (120°).
Target applications range from advertising modules to jewelry display counters. 👇 Designers should focus not just on the 20mA drive current, but on the specific voltage and color grading bins to ensure uniformity in large-scale installations.
🚀 Typical Applications
Based on the 120° viewing angle and 6000-8000K color temperature, the XL-3528UWC excels in specific environments:
- Retail & Display: 💎 Jewelry display cabinets and counter lighting where high CRI (Ra70) enhances product appearance.
- Commercial Signage: Luminescent characters and advertising modules requiring consistent brightness.
- Ambient Lighting: General shop lighting and auxiliary illumination.
- Backlighting: Used in indicator lights or small area backlighting due to the compact 3.5x2.8mm footprint.
📊 Key Technical Specifications
⚡ The following optical and electrical parameters are measured at standard test conditions (Ta=25°C, IF=20mA). Designers must account for the variance between minimum and typical values to ensure performance stability.
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Condition |
|---|---|---|---|---|---|---|
| Luminous Intensity | Φ | 4 | / | 10 | LM | IF=20mA |
| Color Temperature | TC | 6000 | / | 8000 | K | 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 |
Note: Specific color temperature bins range from 6000K-6500K (UW9-10) up to 7500K-8000K (UW15-10).
🔒 Absolute Maximum Ratings & Process Limits
⚠️ Exceeding these ratings may cause device failure or significant degradation in luminous performance. These limits are critical for designing the driver circuit and thermal management.
| Parameter | Symbol | Max. Value | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | PD | 70 | mW | Derate above 25°C |
| Max Forward Current | IF | 20 | mA | Continuous DC |
| Peak Forward Current | IFP | 80 | mA | Pulse ≤0.1ms, Duty ≤1/10 |
| Max Reverse Voltage | VR | 5 | V | |
| ESD Ability | ESD | 2000 | V | Human Body Model |
| Operating Temp. | TOPR | -40 ~ +85 | °C | |
| Storage Temp. | TSTR | -40 ~ +85 | °C |
📦 Package, Dimensions & Assembly Notes
The XL-3528UWC features a standard 3528 footprint with dimensions of 3.5mm (L) x 2.8mm (W) x 1.9mm (H). 🔒 The package uses a White or Yellow colloid and is compliant with RoHS directives.
Soldering Guidelines:
- Process: Suitable for standard SMT and Reflow soldering.
- Lead-Free Profile: Peak temp 255°C (max), time above 217°C: 60-120s.
- Lead Profile: Peak temp 235°C (max), time above 183°C: 60-150s.
- Solderability: Tin rate ≥95% at 235±5°C for 2±0.5 seconds.
- MSL: Level 3 (Floor life 168 hours at 30°C/60%RH).
🏗️ Sourcing & Supply Considerations
To ensure supply chain stability and product performance, consider these factors:
- Bin Selection: Verify specific brightness (H3-H6) and voltage (N13-3 to N13-5) codes required for your BOM.
- Authenticity: Source through XINGLIGHT authorized channels to avoid counterfeits that fail reliability tests.
- Moisture Control: Adhere to MSL 3 storage requirements; baking is required if exposed beyond floor life.
- Sample Testing: Always validate the reflow profile on a sample batch before mass production.
❓ FAQ
Q: What is the maximum current I can drive the XL-3528UWC with? A: The maximum continuous forward current is 20mA. However, a pulsed current up to 80mA is permissible if the pulse width is ≤0.1ms and the duty cycle is ≤1/10.
Q: What does the "N13-4" code mean in the datasheet? A: This is a voltage grading bin. "N13-4" indicates the LED has a forward voltage between 3.0V and 3.2V when driven at 20mA. Using consistent bins ensures uniform brightness in series circuits.
Q: Is this LED suitable for outdoor applications? A: While the operating temperature range is -40°C to +85°C, this model is primarily designed for indoor lighting (shops, counters). For outdoor use, additional waterproofing (IP rating) measures must be taken by the product designer.
Q: What are the soldering limits for a lead-free process? A: For lead-free reflow, the maximum peak temperature is 255°C. The temperature must be maintained between 217°C and the peak for 60 to 120 seconds.
Q: How do I handle the moisture sensitivity (MSL)? A: The XL-3528UWC is classified as MSL 3. This means after opening the sealed bag, the components have a floor life of 168 hours (1 week) at factory conditions (30°C/60% RH) before they must be soldered or baked.
