📌 Product Overview
The XL-3528SURC is a standard 3.5x2.8mm Surface Mount Device (SMD) LED designed by XINGLIGHT. It features a red light emission with a water-clear colloid, utilizing a transparent package to maximize luminous intensity. 💡 This component is specifically engineered for automatic SMT placement and infrared reflow soldering processes, making it ideal for high-efficiency manufacturing environments. Its primary design focus balances high brightness output with robust thermal dissipation in a compact form factor.
🚀 Typical Applications
Based on its 120° viewing angle and high luminous intensity, the XL-3528SURC is suited for applications requiring wide-angle illumination and compact form factors.
- Indoor & Auxiliary Lighting: Ideal for backlighting and mood lighting in residential settings.
- Commercial & Retail: 👇 Effective for jewelry display cabinets and counter lighting where color rendering is critical.
- Signage: Used in advertising modules and luminescent characters for clear visibility.
- General Automation: Suitable for shop lighting systems requiring reliable, long-life components.
📈 Key Technical Specifications
The following optical and electrical parameters are measured under standard test conditions (Ta=25°C, IF=20mA). Designers should use these values to estimate circuit performance.
| Parameter | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Luminous Intensity | Iv | 300 | - | 550 | mcd |
| Dominant Wavelength | λd | 615 | - | 630 | nm |
| Peak Wavelength | λp | - | 625 | - | nm |
| Forward Voltage | VF | 1.8 | - | 2.4 | V |
| Viewing Angle | 2Ø1/2 | - | 120° | - | deg |
| Reverse Current | IR | - | - | ≤5 | μA |
💡 Note: The device is categorized by brightness grading (D9-E4) and voltage grading (N12-7 to N12-9) to ensure batch consistency.
🔒 Absolute Maximum Ratings & Process Limits
Exceeding these values may cause permanent damage to the device. 👇 Strict adherence to these limits is critical for mass production reliability.
| Parameter | Symbol | Max. Value | Unit | Conditions |
|---|---|---|---|---|
| Max Power Dissipation | PD | 50 | 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 | - |
⚠️ Warning: Soldering temperature must not exceed 260°C for longer than 6 seconds to prevent package damage.
📦 Package, Dimensions & Assembly Notes
The XL-3528SURC features a compact 3528 package size (3.5mm x 2.8mm x 1.9mm), designed for standard EIA packaging compatibility.
- Dimensions: The physical outline is 3.52.81.9mm (L/W/H). Designers should verify the PCB footprint against these dimensions to ensure proper placement.
- Soldering: 👇 The component is suitable for infrared reflow soldering. For lead-free processes, the peak temperature should be controlled at 255°C (+0/-5°C) for 5-10 seconds.
- Moisture Sensitivity: The MSL is rated at Level 3. Ensure proper baking and handling if the packaging has been opened for more than 168 hours to prevent popcorning during reflow.
🤝 Sourcing & Supply Considerations
When integrating the XL-3528SURC into production lines, consider the following supply chain factors:
- Grading Consistency: Verify brightness (D9-E4) and voltage (N12-7 to N12-9) bins to ensure uniformity across large installations like lighting arrays.
- Authenticity: Source from XINGLIGHT authorized channels to guarantee compliance with ROHS environmental standards.
- Sampling: Always request samples from the specific production batch to validate color binning (HR01-HR03) before full-scale procurement.
❓ FAQ
Q: What is the maximum current I can drive the XL-3528SURC with continuously? A: The maximum continuous forward current (IF) is 20 mA. While it can handle pulses up to 80 mA, exceeding 20 mA continuously will risk thermal failure and reduce lifespan.
Q: Is this LED compatible with lead-free soldering processes? A: Yes, the datasheet specifies parameters for lead-free reflow. The maximum temperature should be 255°C (held for 5-10 seconds), compared to 260°C for leaded processes.
Q: What does the "water-clear colloid" specification mean for my design? A: This refers to the transparent epoxy encapsulation. It typically provides higher luminous intensity compared to diffused lenses but results in a narrower, more focused beam angle (120°).
Q: How should I handle the component regarding moisture? A: The XL-3528SURC has a Moisture Sensitivity Level (MSL) of 3. If the moisture barrier bag has been open for more than 168 hours, the components should be baked prior to reflow soldering to prevent internal cracking.
Q: What is the typical forward voltage drop? A: At the standard test current of 20 mA, the forward voltage (VF) ranges between 1.8V and 2.4V. Your driver design should accommodate the maximum of 2.4V to ensure consistent brightness across batches.
