📌 Product Overview
The XL-2835UVA-02 from XINGLIGHT is a high-performance 2835 package SMD LED designed for UVA applications in the 395nm spectrum. 💡 It targets engineers developing disinfection, purification, and medical devices, offering a compact 2.8x3.5mm footprint suitable for high-density arrays.
While the nominal 0.2W power suggests simplicity, the real design focus lies in managing the radiation flux and forward voltage variances to ensure consistent sterilization output. 👇 This component bridges the gap between standard indicator LEDs and specialized UV-C emitters, providing a robust solution for surface and fluid treatment systems requiring reliable long-wave ultraviolet performance.
🚀 Typical Applications
Based on its 395nm peak wavelength and 120-degree viewing angle, the XL-2835UVA-02 is optimized for applications requiring broad, even coverage rather than focused point sources:
- 💧 Air and Water Purification: Integrates into compact modules for destroying bacterial DNA in fluids and HVAC systems.
- 🍏 Food Preservation: Extends shelf life and ensures safety in packaging and fresh storage environments.
- 🏥 Medical & Hygiene: Suitable for non-invasive skin treatments and surface disinfection tools in healthcare settings.
- 🔍 UV Detection & Comms: Acts as a reliable emitter in detection circuits and secure communication technologies.
📊 Key Technical Specifications
Under standard test conditions (Ta=25°C, IF=60mA), the electrical and optical performance window is defined below. Engineers must account for the grading bins (P1-9 to P2-2) when selecting components for uniformity.
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Radiation Flux | Φe | 45 | - | 90 | mW | IF = 60mA |
| Peak Wavelength | λp | - | 395 | - | nm | IF = 60mA |
| Forward Voltage | VF | 3.0 | - | 3.6 | V | IF = 60mA |
| Viewing Angle | 2Ø1/2 | - | 120 | - | deg | IF = 60mA |
| Half Wave Width | Δλ | - | 20 | - | nm | IF = 60mA |
Note: Wavelength bins (SZ05/SZ06) ensure spectral consistency for sensitive photochemical reactions.
⚠️ Absolute Maximum Ratings & Process Limits
Exceeding these limits risks immediate catastrophic failure or latent degradation. 💡 Special attention must be paid to the ESD sensitivity and soldering limits during the assembly phase.
| Parameter | Symbol | Max. Value | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | PD | 200 | mW | Dependent on PCB thermal relief |
| Continuous Forward Current | IF | 60 | mA | Must be derated above 25°C ambient |
| Peak Forward Current | IFP | 120 | mA | Pulse width ≤0.1ms, Duty ≤1/10 |
| Max Reverse Voltage | VR | 5 | V | - |
| ESD Ability | ESD | 2000 | V | Human Body Model (HBM) |
| Storage Temperature | TSTR | -40 ~ +85 | °C | - |
Note: 🔒 Ensure the drive current stays strictly within 60mA for continuous operation to maintain longevity.
📦 Package, Dimensions & Assembly Notes
The XL-2835UVA-02 utilizes a standard EIA 2835 form factor (2.8x3.5x0.8mm), making it compatible with modern SMT pick-and-place equipment.
- 🏗️ Dimensions: The compact 0.8mm height profile allows for slim optical designs.
- 🔌 Soldering Compatibility: Suitable for standard Reflow Soldering processes. The component supports both Lead (Max 235°C) and Lead-free (Max 255°C) profiles.
- 🌡️ MSL Level: Rated at MSL 3, the components can be exposed to ambient moisture for 168 hours (in sealed bags) before floor life is compromised, requiring baking if exceeded.
- 🧹 Colloid: The water-clear transparent body maximizes light transmission efficiency.
📦 Sourcing & Supply Considerations
When integrating the XL-2835UVA-02 into mass production, specific supply chain factors must be verified to avoid counterfeit or off-spec batches:
- ✅ Bin Verification: Always verify the Brightness (P) and Voltage (N) grading codes. Mixing bins can cause visible unevenness in arrays.
- 🤝 Sample Support: Request pre-samples with specific wavelength (SZ) codes to validate spectral response before bulk ordering.
- 🚚 Packaging: Confirm EIA standard tape-and-reel specifications to ensure automated pick-and-place feeders are configured correctly.
- 🛡️ Authenticity: Source exclusively through authorized XINGLIGHT channels or verified distributors to guarantee ROHS compliance and reliability.
❓ Frequently Asked Questions (FAQ)
Q: What is the typical forward voltage for this LED? A: The typical forward voltage ranges from 3.0V to 3.6V at a driving current of 60mA. Designers should prepare for the 3.6V maximum to ensure the driver circuit can handle the worst-case voltage drop across the LED array.
Q: Can this component be used for handheld sterilization devices? A: Yes, its compact 2835 footprint and 120-degree beam angle are ideal for portable, battery-powered disinfection wands. However, ensure the 2000V ESD rating is protected in the circuit design, as handheld devices are prone to static discharge.
Q: What precautions are necessary for reflow soldering? A: The device supports standard Reflow processes. For lead-free soldering, the peak temperature must not exceed 255°C for more than 10 seconds. Rapid cooling (max 6°C/sec) is recommended to prevent thermal shock to the internal die.
Q: How does the moisture sensitivity level (MSL) affect storage? A: With an MSL 3 rating, the components have a floor life of 168 hours after opening the vacuum-sealed bag. If they are not used within this window, they must be baked at specific temperatures to drive out moisture before reflow to prevent "popcorning" damage.
Q: Is the 395nm wavelength safe for skin exposure? A: While 395nm UVA is generally safer than UV-C, it is still high-energy ultraviolet light. 👇 It is used in medical skin treatments, but direct exposure should be controlled and managed according to safety standards, depending on the intensity and duration of use.
Q: How is the radiation flux graded? A: The flux is graded into bins like P1-9 (45-60mW) and P2-2 (75-90mW). For applications requiring uniform intensity, such as purifying panels, it is critical to source LEDs from the same bin code to ensure consistent performance across the light surface.
