Dongguan Zhiding Electronics Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of 3838 UV LED Diode 365nm 3W High Power SMD LED Emitter in China, also supports customized service. If you're going to wholesale advanced 3838 UV LED Diode 365nm 3W High Power SMD LED Emitter made in China, welcome to get quotation from our factory. Also, 2 years warranty is available.
Products Description
3838 UV LED Diode 365nm 3W High Power SMD LED Emitter
Part Number：AL-H38GAU36-18-6D45
Package:1000 pieces/roll
3838 365nm UV LED light chip is an industrial-grade light source specifically designed for high-precision UV applications. Its core advantages lie in precise wavelength, high energy density, and excellent heat management. It is widely used in UV curing, fluorescence detection, anti-counterfeiting verification, medical phototherapy, and scientific research experiments, etc.
key Advantages
1.Precise 365nm Wavelength Peak: Optimized for maximum absorption by UV adhesives and inks, ensuring deep curing and strong bonding strength without surface tackiness.
2.Superior Thermal Management: Built on a high-purity AlN ceramic substrate with gold wire bonding. This design minimizes thermal resistance, significantly reducing light decay over long-term operation.
3.High Irradiance & Energy Density: Delivers intense UV output in a compact 3.8mm x 3.8mm footprint, allowing for high-density array configurations to maximize curing area.
4.Eco-Friendly & Instant On: Mercury-free, RoHS compliant, and reaches full intensity instantly without warm-up time, boosting production line efficiency.
Dimension Size
| Parameter | Symbol | Test Condition | Min. | Typ. | Max. | Unit |
| Radiated Flux | φe | IF=350mA | 400 | 800 | mW | |
| Peak Wavelength | λp | IF=350mA | 365 | - | 375 | nm |
| Spectrum Line Halfwidth | Δλ | I _ { F } = 3 5 0 m A | - | 15 | - | nm |
| Forward Voltage | VF | IF=350mA | 3.2 | - | 4.0 | V |
| Viewing Angle | 201/2 | I _ { F } = 3 5 0 m A | - | 60 | - | deg |
| Reverse Current | IR | V _ { R } = 5 V | - | - | 10 | uA |
Applications
1.UV Curing Systems
Our UV curing equipment works excellently for UV ink, coating, varnish and adhesive curing. It's widely applied across printing, packaging and electronic assembly industries.
2.Fluorescence Detection & Security Application
This product can activate targeted fluorescent substances, making it well-suited for banknote verification, passport security inspection and forensic testing work.
3.Medical & Phototherapy Use
It delivers stable UVA light output, which meets the requirements of dermatology treatment and medical equipment sterilization.
4.Industrial Inspection
Paired with machine vision devices, it improves image contrast effectively. Factories use it to spot cracks, leakage and impurities on production lines.
About Us
FAQ
Q1：What is the peak wavelength and tolerance of the 3838 UV LED? Is customization available?
A: Standard peak wavelengths are typically 365nm, 385nm, 395nm, or 405nm, with a tight tolerance of ±2-3nm to ensure precise photochemical reactions. We also offer customized wavelength binning to meet specific application requirements, such as curing particular adhesives or specialized fluorescence detection.
Q2: What packaging materials are used, and how is heat dissipation managed for long-term operation?
A: The 3838 package features a high-purity ceramic substrate (such as Al2O3 or AlN) and a high-temperature resistant lens, offering excellent thermal stability. Combined with internal gold wire bonding, it achieves very low thermal resistance (typically under 5℃/W). This ensures efficient heat dissipation, minimal light decay under high-current drive, and a lifespan of tens of thousands of hours.
Q3: What are the typical operating current and voltage for this LED?
A: The typical operating current is usually between 500mA and 700mA (depending on the power rating), with a forward voltage (Vf) generally ranging from 3.2V to 3.8V. We recommend using a constant current driver to ensure stable light output and prevent damage from overcurrent.
Q4: Is this product eco-friendly? Does it contain mercury or other harmful substances?
A: Absolutely. Our 3838 UV LEDs utilize solid-state semiconductor technology and are completely free of mercury, lead, and other hazardous substances. They are fully compliant with EU RoHS and REACH directives. Compared to traditional mercury lamps, they are much safer, eco-friendlier, and incur lower disposal costs.
Q5: Is the 3838 UV LED compatible with SMT assembly? What is its reflow soldering heat resistance?
A: Yes, it is. This device uses a standard 3838 (3.8mm x 3.8mm) Surface Mount Device (SMD) package and is fully compatible with automated SMT production lines. The package is designed to withstand standard IR reflow soldering processes (typically meeting JEDEC MSL 3 standards), facilitating large-scale automated manufacturing for our clients.
This SMD3838 UV LED pad is compatible with SMD3535 UV LED. The price will be lower than that of SMD 3535 UV LED.
We are a professional company from Dongguan, China, specializing in manufacturing SMD LED, Diode LED, UV LED and IR LED. We not only sell LEDs, but also provide PCB board processing and customized services for other products. Please feel free to contact us!
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