📌 Product Overview
The XINGLIGHT XL-3528UPC is a high-brightness 3528 SMD LED designed for applications requiring vibrant pink illumination. 💡 It utilizes a pink colloid encapsulation to enhance color purity and luminous intensity, making it ideal for decorative and accent lighting tasks. While the component appears standard, successful integration relies on adhering to its specific thermal and electrical boundaries to maintain longevity.
This component is optimized for modern electronics manufacturing, supporting both lead-free and leaded soldering processes. 👇 Designers should focus on the forward voltage variance and thermal dissipation limits when driving the LED at continuous currents to ensure stable light output over time.
🚀 Typical Applications
Based on its optical characteristics and form factor, the XL-3528UPC is suited for:
- Indoor & Auxiliary Lighting: Providing ambient pink light in residential or commercial settings.
- Advertising & Signage: Illuminating luminescent characters and advertising modules.
- Retail Displays: 💡 High-brightness output is specifically effective for jewelry display counters and shop lighting where color rendering is crucial.
- Decorative Backlighting: Used in panel indicators or mood lighting systems.
📈 Key Technical Specifications
The following table outlines the optical and electrical performance under standard test conditions (Ta=25°C):
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | Φ | 3 | - | 6 | LM | IF = 20mA |
| Forward Voltage | VF | 2.8 | - | 3.4 | V | IF = 20mA |
| Viewing Angle | 2θ1/2 | - | 120 | - | Deg | IF = 20mA |
| Reverse Current | Ir | - | - | 5 | μA | VR = 5V |
| Chromaticity (x) | X | - | 0.287 | - | - | IF = 20mA |
| Chromaticity (y) | Y | - | 0.117 | - | - | IF = 20mA |
✨ Note: Bin codes (H2-H4 for brightness, N13-3 to N13-5 for voltage) are available for tighter sorting in mass production.
🔒 Absolute Maximum Ratings & Process Limits
Exceeding these ratings may cause permanent damage. 👇 Critical design limits are summarized below:
| Parameter | Symbol | Max. Value | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | PD | 70 | mW | Derate above 25°C ambient |
| Max Continuous Forward Current | IF | 20 | mA | |
| Peak Forward Current | IFP | 80 | mA | Pulse width ≤0.1ms, Duty ≤1/10 |
| Max Reverse Voltage | VR | 5 | V | |
| ESD Ability | ESD | 2000 | V | Human Body Model |
| Operating Temperature | TOPR | -40 ~ +85 | °C | |
| Storage Temperature | TSTR | -40 ~ +85 | °C |
💡 Design Insight: While the peak current allows for pulse modulation, continuous operation above 20mA will rapidly degrade the pink colloid and chip lifespan.
📦 Package, Dimensions & Assembly Notes
The XL-3528UPC features a standard 3528 surface-mount package with specific dimensions and handling requirements:
- Outline Dimensions: 3.5mm (L) x 2.8mm (W) x 1.9mm (H).
- Moisture Sensitivity: 🚨 MSL Level 3. Ensure proper baking before reflow if exposed to ambient moisture for extended periods.
- Soldering Compatibility: Suitable for both infrared reflow and automated SMT production.
Reflow Profile Guidelines:
- Lead-Free Process: Max temp 255°C (Time above 217°C: 60-120s).
- Leaded Process: Max temp 235°C (Time above 183°C: 60-150s).
- Wave Soldering: Max 260°C for ≤5 seconds.
🛍️ Sourcing & Supply Considerations
When integrating the XL-3528UPC into production, consider the following supply chain factors:
- Bin Consistency: 💡 Specify brightness (H2-H4) and voltage (N13) bins to ensure uniformity across large lighting installations.
- Packaging: Components are shipped in EIA standard compliant packaging, compatible with most automated pick-and-place machines.
- Authenticity: Verify channel authenticity to avoid mixed batches or non-compliant ROHS materials.
- Sample Support: Request pre-production samples to validate color rendering in your specific housing or lens configuration.
❓ FAQ
Q: What is the forward voltage range for this LED? A: The forward voltage (VF) ranges from 2.8V to 3.4V when driven at the standard 20mA current. Designers should account for the upper limit (3.4V) when sizing current-limiting resistors to accommodate batch variations.
Q: Can this LED be used with a lead-free soldering process? A: Yes, the XL-3528UPC is rated for lead-free infrared reflow soldering. The maximum peak temperature allowed is 255°C, with a critical soak time management above 217°C to prevent thermal shock.
Q: What does Moisture Sensitivity Level (MSL) 3 mean for storage? A: MSL 3 indicates the component must be mounted within 168 hours (one week) of opening the vacuum-sealed bag. If exposed to ambient air longer, the components should be baked at 125°C for 24 hours prior to reflow to prevent "popcorning" or internal cracking.
Q: What is the typical viewing angle for the 3528UPC? A: The typical viewing angle (2θ1/2) is 120 degrees. This wide dispersion makes it suitable for area lighting and signage where even light distribution is preferred over a focused spot.
Q: How should I drive the LED for high-brightness applications? A: While the LED is rated for a peak pulse current of 80mA, continuous operation should not exceed 20mA. For high-brightness pulses, ensure the pulse width is ≤0.1ms and the duty cycle is ≤10% to avoid thermal overload.
