10W SMD High Power UV LED Chip - 380-385nm Purple (9-12V 1050mA)

Specifications:

• Wavelength: 380nm - 385nm (UVA Spectrum)
• Power Dissipation: 10 Watts
• Forward Voltage (VF): 9.0V – 12.0V DC
• Forward Current (IF): 1050mA (Nominal) 
• Radiant Flux: 5000mW – 5500mW
• Viewing Angle: 120° – 140° (Wide Flood)
• Package Type: 10W COB / SMD (Multi-chip Array)
• Operating Temperature: -20°C to +60°C (Base Temperature)

Key Applications & Projects

• Industrial UV Curing: Instant curing of UV-sensitive resins, glues, and 3D prints.
• Forensic Investigation: Detecting bodily fluids, counterfeit currency, and document alterations.
• Mineralogy: Identifying fluorescent minerals and gemstones.
  Sterilization & Water Purification: Specialized low-wavelength UVA research applications.
• Horticulture: Supplemental UV light for specific plant stress-response induction.

Project Evolution 

• Past Projects (Prerequisites): If you have used standard 5mm UV LEDs or 3W UV beads and found them insufficient for large-area curing or daylight visibility, this 10W chip is your next step.
• Feature Upgrade: Upgrading to this 10W chip unlocks the ability to cure resins in seconds rather than minutes and allows for UV photography in larger, more open spaces.
• Effort Level: Intermediate. Requires knowledge of constant current drivers and thermal management.

Virtual Technician & Wiring

• ⚠️ WARNING: This LED generates intense UV radiation. Avoid direct eye or skin exposure. Always wear UV-rated safety goggles.

   

• Thermal Management: You MUST mount this LED on a high-quality aluminum heat sink with thermal paste. Without active cooling or a large passive sink, the chip will fail within seconds.

Wiring:

• Positive (+): Marked with a '+' or a wide tab.
• Negative (-): Marked with a '-' or a narrow tab.
• Powering: Use a Constant Current LED Driver (900mA - 1000mA). Do not use a constant voltage power supply without a high-wattage current-limiting resistor.

​Packages include:

1 X 10W SMD High Power UV LED Chip - 380-385nm Purple (9-12V 1050mA)

Frequently Asked Questions (FAQ)

1. What is the difference between 380nm and 395nm UV LEDs?
   380nm has higher photon energy, making it better for industrial curing and professional forensic work.
   
2. Do I need a resistor for this LED?
   It is highly recommended to use a Constant Current Driver rather than a resistor to prevent thermal runaway.
   
3. Can I run this on a 12V battery?
   Yes, but you must use a buck-boost constant current module to maintain ~1000mA as the battery voltage drops.
   
4. Is this LED waterproof?
   No, the SMD chip must be protected from moisture and humidity.
   
5. How hot does it get?
   Without a heatsink, it can exceed 100°C in seconds. Always use thermal protection.
   
6. Does it emit visible light?
   Yes, it will appear as a dim, deep purple glow, but the majority of the output is invisible UVA.
   
7. Is it safe for skin?
   Prolonged exposure to 380nm UV can cause skin irritation. Avoid direct contact.
   
8. Can this cure UV resin?
   Yes, it is specifically optimized for most UV resins that cure in the 365-405nm range.
   
9. What kind of heat sink do I need?
   An aluminum sink rated for at least 15W of heat dissipation is recommended.
   
10. Can I dim this LED?
    Yes, if your Constant Current Driver supports PWM dimming.
    
11. How long will it last?
    With proper cooling, it is rated for up to 50,000 hours.
    
12. Is it compatible with Arduino?
    You can control it via a MOSFET and an Arduino, but the power must come from a separate 12V source.
    
13. Why is the wavelength 380-385nm better for money detection?
    Many security fibers only fluoresce strongly under shorter UV wavelengths.
    
14. What is the current draw at 9V?
    It typically begins to conduct at 9V, drawing roughly 300-500mA.
    
15. Does the product come with thermal paste?
    No, thermal paste must be purchased separately.
    
16. Is it dangerous to look at?
    Yes, UVA light can cause retinal damage. Always wear UV protection.
    
17. Can I use this for a tanning bed?
    No, this is an industrial component, not for consumer tanning use.
    
18. What is the substrate material?
    It uses a copper PCB base for the fastest possible heat transfer.
    
19. How many chips are inside the SMD?
    This is a 3x3 matrix (9 individual 1W dies) wired in series/parallel.
    
20. Is this product Probots™ Secure-Transit  protected?
    Yes, we use specialized anti-static and shock-proof packaging to prevent damage during shipping.