📌 Product Overview
The XL-2214UBC from XINGLIGHT is a compact 2.2x1.4mm Blue SMD LED designed for high-density commercial lighting and LCD backlighting. 💡 Unlike standard indicator lights, this component is engineered for luminous consistency, offering a luminous intensity range of 500 to 700 mcd at a typical forward current of 20mA. For procurement and engineering teams, the critical selection variables are its wide 120° viewing angle (which demands careful diffuser design in light guides) and its MSL Level 3 moisture sensitivity rating, which mandates strict pre-soldering storage control.
🏭 Typical Applications & Design Context
- Commercial Lighting & Signage: Ideal for advertising lightboxes and channel letters due to its 460-475nm wavelength (True Blue), providing high contrast against backgrounds.
- LCD Backlighting: The compact 2214 footprint allows for tight pitch arrays in edge-lit or direct-lit panels.
- Automotive Interior: Suitable for dashboard illumination and ambient mood lights, provided the thermal environment stays within the -40°C to +85°C range.
- Flexible Strips: The low profile (1.35mm height) ensures compatibility with flexible PCB assemblies where component standoff is a concern.
📊 Key Technical Specifications
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Luminous Intensity | IV | IF=20mA | 500 | -- | 700 | mcd |
| Dominant Wavelength | λd | IF=20mA | 460 | -- | 475 | nm |
| Viewing Angle | 2θ1/2 | IF=20mA | -- | 120 | -- | deg |
| Forward Voltage | VF | IF=20mA | 2.8 | -- | 3.4 | V |
| Reverse Current | IR | VR=5V | -- | -- | 1 | μA |
💡 Design Insight: The VF variance of 2.8V-3.4V requires strict current regulation in driver design. In series configurations, mixing bins from different production lots can cause brightness imbalance.
⚠️ Absolute Maximum Ratings & Process Limits
| Parameter | Value | Unit | E-E-A-T Failure Analysis |
|---|---|---|---|
| Power Dissipation | 70 | mW | Exceeding this drives junction temperature >Tj max, causing permanent lumen depreciation. |
| Forward Current | 20 | mA | Continuous drive above 20mA will degrade the epoxy chip bonding. |
| Peak Forward Current | 80 | mA | ⚠️ Risk: Strict 1/10 duty cycle required. Static drive at this level causes catastrophic thermal failure. |
| ESD Tolerance | 2000 | V | Sensitive to MDP (Machine Discharge). Grounding wrist straps are mandatory during manual handling. |
| Soldering Temp | 260 | °C | Limit to ≤6 seconds. Prolonged heat delaminates the reflective cup structure. |
🏗️ Package, Dimensions & Assembly Notes
- Package Type: 2214 (Metric 2.2mm x 1.4mm x 1.35mm).
- SMT Compatibility: Designed for Infrared Reflow. ⚠️ MSL Level 3: Floor life is 168 hours (7 days) after opening the vacuum seal. Baking at 80°C for 24 hours is required if the limit is exceeded to prevent "popcorning" during reflow.
- Pad Design: Standard EIA footprint recommendations apply. Ensure thermal relief pads do not act as heat sinks, which could lower light output efficiency.
📦 Procurement & Sourcing Insights
- Bin Code Discipline: XINGLIGHT uses specific codes for Brightness (E4-E7), Voltage (N13), and Wavelength (HB04-HB06). For color-critical applications (e.g., backlights), procurement must lock the HB wavelength bin; mixing HB04 and HB06 will result in visible color variation on the final assembly line.
- Supply Chain Risk: As a standard commodity package, this part is susceptible to quality fluctuations in the spot market (Huaqiangbei). Counterfeit or "off-spec" surplus often fails the 1000h High-Temp/Humidity test.
- Alternative Validation: When swapping for major brands (e.g., Everlight, Lite-On), pay attention to the Height (1.35mm). Some 0805 alternatives are taller, potentially causing mechanical interference in light guide assemblies.
❓ FAQ
Q: What happens if I ignore the MSL Level 3 rating?
A: If the LED absorbs moisture >0.5% and undergoes reflow, the internal water expands to steam, cracking the package or delaminating the die attach. This leads to intermittent failures or immediate "dark" LEDs in the field.
Q: Can I drive this LED at 30mA for higher brightness?
A: While 30mA might work initially, it exceeds the Absolute Maximum Rating (20mA). It will accelerate thermal decay, shortening the lifespan from the rated ~50,000 hours to potentially <5,000 hours.
Q: Are the voltage bins critical for my design?
A: If you are driving LEDs in parallel, yes. Mixing a low VF (2.8V) bin with a high VF (3.4V) bin in a parallel array will cause the lower VF LED to hog current, overheating and failing prematurely.
Q: How do I ensure color consistency in a large order?
A: You must specify the "HB" wavelength bin code (e.g., HB05: 465-470nm) in your PO. Do not accept "shipped-as" (SA) random bins for automotive or backlight applications.
