📌 Product Overview
The XINGLIGHT XL-3528SURC-FJ is a high-performance 3.5x2.8mm Surface Mount Device (SMD) LED designed for reliable illumination in compact spaces. 📦 It features a red dominant wavelength (615-630nm) and a water-clear colloid, making it ideal for bright, focused signage and accent lighting. 💡 Designers should prioritize its 120° viewing angle and robust ESD protection (2000V) to ensure visibility and durability in high-density arrays. ✨ This component is fully ROHS compliant and optimized for automated SMT processes, streamlining mass production for commercial lighting modules.
🎯 Typical Applications
Based on its optical characteristics and form factor, the XL-3528SURC-FJ is best suited for applications requiring high-intensity red light with wide dispersion.
- Indoor & Auxiliary Lighting: Provides efficient illumination for residential and commercial ambient light fixtures.
- Advertising & Signage: 📈 Excellent luminous intensity (up to 900mcd) ensures bright, readable advertising light boxes and luminescent characters.
- Retail Display: Ideal for jewelry display counters and shop lighting where color rendering and clarity are critical.
- Indicator Modules: Suitable for status lights and dashboard indicators due to compact 3528 footprint.
⚡ Key Technical Specifications
The table below summarizes the optical and electrical performance under standard test conditions ($T_a=25^\circ C$).
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | $I_V$ | 400 | - | 900 | mcd | $I_F=20mA$ |
| Dominant Wavelength | $\lambda_d$ | 615 | - | 630 | nm | $I_F=20mA$ |
| Peak Wavelength | $\lambda_p$ | - | 625 | - | nm | $I_F=20mA$ |
| Forward Voltage | $V_F$ | 1.8 | - | 2.4 | V | $I_F=20mA$ |
| Viewing Angle | $2\theta_{1/2}$ | - | 120 | - | deg | $I_F=20mA$ |
| Reverse Current | $I_R$ | - | - | 5 | $\mu A$ | $V_R=5V$ |
💡 Design Insight: With a forward voltage range of 1.8V-2.4V, this LED is compatible with standard low-voltage driver circuits. Ensure your current limiting resistor accounts for the maximum forward voltage to maintain consistent brightness across batches.
🚨 Absolute Maximum Ratings & Process Limits
Exceeding these parameters may result in permanent damage. 👇 Design margins must account for these absolute limits to ensure field reliability.
| Parameter | Symbol | Max. Value | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | $P_D$ | 50 | mW | @ $T_a=25^\circ C$ |
| Max Continuous Forward Current | $I_F$ | 20 | mA | - |
| Peak Forward Current | $I_{FP}$ | 80 | mA | Pulse $\le 0.1ms$, Duty $\le 1/10$ |
| Max Reverse Voltage | $V_R$ | 5 | V | - |
| ESD Ability | ESD | 2000 | V | Human Body Model (HBM) |
| Operating Temperature | $T_{OPR}$ | -40 ~ +85 | $^\circ C$ | - |
| Storage Temperature | $T_{STR}$ | -40 ~ +85 | $^\circ C$ | - |
| Soldering Temp/Time | $T_{SOL}$ | 260 | $^\circ C$ | $\le 6$ Seconds |
🔒 Risk Control: The Moisture Sensitivity Level (MSL) is rated at Level 3. Floor life should be strictly managed (168 hours) after opening the sealed bag to prevent popcorning or internal damage during reflow.
📦 Package, Dimensions & Assembly Notes
The XL-3528SURC-FJ utilizes a standard 3528 footprint (3.5mm x 2.8mm x 1.9mm), ensuring compatibility with most modern pick-and-place machines.
- Dimensions: The package outline is 3.5 x 2.8 x 1.9mm. Designers should verify the PCB land pattern according to the EIA standard packaging specifications mentioned in the datasheet.
- Soldering Compatibility: The device is suitable for both Infrared Reflow and Lead Soldering processes.
- Reflow Profile: For lead-free processes, peak body temperature should not exceed 255°C.
- Manual Soldering: Do not exceed 260°C for more than 6 seconds.
- Tape & Reel: EIA standard packaging facilitates high-volume SMT automatic production, reducing setup time in assembly lines.
🚀 Sourcing & Supply Considerations
When integrating the XL-3528SURC-FJ into your BOM, consider the following supply chain factors to ensure production continuity.
- Bin Selection: The datasheet specifies brightness (E2-E8) and voltage (N12-7 to N12-9) grading codes. Verify the specific bin code required for your design to ensure uniformity.
- Authenticity: Source components through authorized XINGLIGHT channels to avoid counterfeits that may not meet the ROHS or reliability specifications.
- Sample Testing: Always request samples from the specific batch to validate the color consistency (HR01-HR03) and intensity before mass production.
- Lead Time: 3528 series LEDs are high-volume commodities, but specific color temperatures or brightness bins may have variable lead times.
❓ FAQ
Q: What is the typical forward voltage for this LED? A: The typical forward voltage is 2.4V at a forward current of 20mA. However, it can range from 1.8V to 2.4V, so drivers should accommodate the upper limit.
Q: Can this LED be used in outdoor environments? A: The datasheet lists "Indoor lighting" and "Shop lighting" as primary applications. While the operating temperature range is -40°C to +85°C, it is primarily designed for indoor use. Outdoor use would require additional waterproofing measures (IP rating) at the module level.
Q: What does MSL Level 3 mean for assembly? A: Moisture Sensitivity Level 3 means the components can be exposed to the factory floor environment for up to 168 hours (one week) before they must be reflowed. If exposed longer, they require baking to drive out moisture to prevent internal cracking during soldering.
Q: What is the peak current capability? A: The peak forward current is 80mA. However, this is strictly for pulsed operation with a pulse width $\le 0.1ms$ and a duty cycle $\le 1/10$. Do not drive it continuously at 80mA.
Q: How is the brightness sorted? A: Brightness is sorted by intensity codes ranging from E2 (400-450 mcd) to E8 (800-900 mcd) at 20mA. Selecting the correct bin code is crucial for applications like advertising modules where uniform brightness is required across multiple LEDs.
