📌 Product Overview
The XL-3528UYC-FJ is a surface-mount device (SMD) LED manufactured by XINGLIGHT, featuring a standard 3.5mm x 2.8mm footprint with a profile height of 1.9mm. It utilizes a water-clear colloid to produce a yellow luminous color with a dominant wavelength range of 585nm to 595nm, making it suitable for high-density board layouts. 💡
Designed for compatibility with automated SMT production lines, this component is constructed to withstand infrared reflow soldering processes. It is fully compliant with ROHS environmental directives and is categorized under Moisture Sensitivity Level (MSL) 3, requiring specific handling to prevent moisture-induced damage during assembly.
🔦 Typical Applications
Based on its optical characteristics and form factor, the XL-3528UYC-FJ is optimized for the following scenarios:
- Indoor & Auxiliary Lighting: General illumination and accent lighting in residential or commercial settings.
- Signage & Advertising: Illumination for luminescent characters and advertising light modules.
- Retail Display: Counter lighting and specialized jewelry display cabinet lighting where consistent color rendering is critical.
- Backlighting: Auxiliary light sources for indicator panels and switches.
📊 Key Technical Specifications
The following optical and electrical parameters are measured under standard test conditions (Ta=25°C, IF=20mA). Designers should pay close attention to the binning codes for brightness and voltage to ensure lot-to-lot consistency.
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
|---|---|---|---|---|---|---|
| Luminous Intensity | Iv | 800 | 1000 | 1300 | mcd | IF=20mA |
| Dominant Wavelength | λd | 585 | - | 595 | nm | Yellow/Water clear |
| Forward Voltage | Vf | 1.8 | - | 2.4 | V | IF=20mA |
| Viewing Angle | 2Ø1/2 | - | 120 | - | deg | |
| Reverse Current | Ir | - | - | ≤5 | μA | Vr=5V |
⚠️ Absolute Maximum Ratings & Process Limits
Exceeding these ratings may cause permanent device failure or degradation. These limits are critical for designing robust driver circuits and establishing thermal management boundaries.
| 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 | Tstg | -40 ~ +85 | °C | |
| Soldering Temp/Time | Tsol | 260 | °C | ≤6 Seconds |
📦 Package, Dimensions & Assembly Notes
- Outline Dimensions: The component measures 3.5mm (L) x 2.8mm (W) x 1.9mm (H). Designers should verify the pad layout against the manufacturer's "Outline Dimensions" drawing to ensure proper placement on PCBs.
- Packaging: The product follows EIA standard packaging specifications, suitable for tape-and-reel feeders in automated pick-and-place machines.
- Soldering Guidelines: This LED is suitable for infrared reflow soldering processes. The datasheet specifies profiles for both lead-free (peak 255°C) and leaded (peak 235°C) processes. ⚠️ Due to the MSL 3 classification, components must be baked according to J-STD-033 standards if the moisture barrier bag has been exposed to ambient conditions for more than 168 hours (floor life).
🚀 Sourcing & Supply Considerations
- Binning & Consistency: To ensure uniform color and brightness in large installations (e.g., advertising modules), procurement should specify binning codes (Brightness E8-F2, Voltage N12-7 to N12-9) during the RFQ process.
- Authenticity: Verify components through authorized channels to avoid counterfeits that may not meet the ROHS or ESD specifications listed in the datasheet.
- Sample Evaluation: Always request samples from the same batch intended for mass production to validate the thermal performance in your specific enclosure design.
❓ FAQ
Q: What is the MSL level of the XL-3528UYC-FJ, and why does it matter? A: The MSL is Level 3. This means the component can be exposed to a floor life of 168 hours (one week) at <30°C/60% RH after opening the moisture barrier bag before it requires baking prior to reflow soldering to prevent popcorn cracking.
Q: Can this LED be used in outdoor applications? A: The datasheet lists "Indoor lighting" as a primary application. While the storage temperature range is wide (-40°C to +85°C), the water-clear colloid and standard SMD packaging suggest it is best used inside protected fixtures or modules rather than exposed to direct rain or UV sunlight.
Q: What is the forward voltage requirement for driving this LED? A: The forward voltage (Vf) ranges from 1.8V to 2.4V at 20mA. Your driver circuit design should account for the maximum voltage (2.4V) to ensure current limiting, while considering the binning codes (N12-7 to N12-9) for tighter voltage regulation if needed.
Q: Is this component compatible with lead-free soldering processes? A: Yes, the datasheet explicitly provides a reflow profile for a Lead-free process with a peak temperature of 255°C +0/-5°C and a time above 217°C (TAL) between 60-120 seconds.
