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HKM-571859 High-Power 3W COB Surface Light Source with 120° Beam Angle and 120LM/W Luminous Efficiency
Experience the versatility and efficiency of the HKM-571859 High-Power 3W COB Surface Light Source. This cutting-edge lighting solution is designed to provide bright and reliable illumination, making it perfect for a variety of applications. With a luminous efficiency of 120LM/W and a wide beam angle of 120°, this product delivers a powerful performance that enhances visibility in any setting.
The compact design features an overall size of 50*7mm with a luminous surface size of 28*6mm, allowing for easy installation in spaces ranging from residential to commercial environments. The HKM-571859 boasts a color rendering index of 80, ensuring accurate color representation to bring your space to life.
Operating within a forward and backward voltage range of 9-11V, and a rated current of 300mA, this COB light source is engineered for durability and consistency. The heavy gold aluminum substrate and gold wire contribute to its impressive thermal resistance of ≤ 5°/W, ensuring it operates effectively even at maximum junction temperatures of 150°.
With a color tolerance of 5 SDCN, the HKM-571859 maintains its integrity over time, as demonstrated by its 85% performance after 1000 hours of regular aging and an impressive 97% after 6000 hours. Whether you need focused lighting for detailed tasks or broader illumination for general use, this light source is equipped to meet your requirements.
Elevate your lighting solutions with the HKM-571859 High-Power 3W COB Surface Light Source, designed to offer long-lasting efficiency and quality.
Product information:
Power: 3
Overall size: 50*7(mm)
Luminous surface size: 28*6(mm)
Power: 3(W)
Color rendering index: 80
Luminous flux: 120LM/W(lm)
Forward Voltage: 9-11(V)
Backward voltage: 9-11(V)
Electrostatic breakdown voltage (ESD):9-11(V)
Rated current: 300ma(A)
Chip size: 15*30(mil)
Wire material: gold wire
Substrate material: heavy gold aluminum
Luminous angle: 120(°)
Luminous efficiency: 120(lm/W)
Color tolerance: 5(SDCN)
Thermal resistance: ≤ 5(°/W)
Maximum allowable junction temperature: 150(°)
Voltage temperature coefficient: 150(mV/°C)
1000 hours regular aging: 85(%)
6000 hours regular aging: 3(%)
COB Light source *1/*5/*10
Every product we offer includes a 180-day purchase protection plan at no additional cost. This coverage extends beyond a standard warranty, reflecting our confidence in product quality and our ongoing commitment to your satisfaction.
The protection plan is designed to provide practical help in real-world situations. Whether you encounter a manufacturing issue, a performance problem, or an unexpected accident, our team is ready to assist with clear, fair solutions.
What Is Covered
Manufacturing Defects
We replace items with material or workmanship flaws at no charge.
Performance Failures
Free repair or replacement if the product fails under normal use.
Accidental Damage
One-time courtesy replacement at a reduced price.
Zero Hidden Fees
All shipping costs for replacements and returns are covered.
How to File a Claim
How This Differs from the Warranty
The 180-day purchase protection includes accidental damage and performance failures that are typically not covered by a standard warranty. It provides an additional layer of support during the first six months after purchase, giving you greater confidence and peace of mind.
We want you to be completely satisfied with your purchase. If for any reason you are not fully happy, you may return your item within 30 days of delivery for a full refund. No lengthy forms, no unnecessary questions.
Our return policy is built on a simple principle: if the product is not right for you, we will make it right. We understand that online shopping involves trust, and we work hard to earn that trust with every order.
Return Eligibility
30-Day Window
Request a return within 30 days of delivery.
Original Condition
Unworn or unused, with tags and original packaging.
Proof of Purchase
A receipt or order number is required.
Fast Refund
Refund processed within 10 business days.
How to Start a Return
Returns & Exchanges Overview
Damages & Exchanges
Please inspect your order as soon as it arrives. If the item is defective, damaged, or incorrect, contact us immediately so we can evaluate the issue and make it right. For exchanges, the fastest option is to return the original item and place a new order for the replacement.
We believe in the quality of our products, and we want you to share that confidence. Every product is backed by a 24-month warranty covering all structural and functional components, including zippers, buckles, straps, and fabric integrity.
The warranty is designed to be simple and accessible. You only need your proof of purchase to begin a claim, and our team will assess the issue promptly. If a manufacturing issue arises, we will make it right.
What the Warranty Covers
Comprehensive Coverage
Every part warranted for two full years.
Free Repair or Replacement
Whichever is faster, at no cost to you.
Quick Turnaround
Claims assessed within 1 business day.
Transferable
Warranty follows the product, not the owner.
How to File a Warranty Claim
Every order ships free—no minimums, no hidden fees. We currently deliver across the United States and are actively working to expand to more countries. We partner with reliable U.S. courier services to ensure your order arrives safely and on time.
Our delivery process is designed for transparency. From the moment you place your order to the moment it reaches your door, you receive clear updates at every stage. We carefully inspect each product before dispatch, and we provide tracking information as soon as your order ships.
Our U.S. Shipping Partners
USPS
Official national carrier with nationwide coverage.
UPS
Fast and reliable ground and express shipping.
FedEx
Express delivery with real-time tracking.
DHL eCommerce
Efficient parcel delivery for e-commerce shipments.
Delivery Process
Delivery Time Summary
Cancellations & Taxes
You may cancel your order at any time before it ships. All product prices include applicable taxes, and there are no additional VAT or customs fees for orders delivered within the United States.
Whether you have a question, need help with an order, or just want some advice, our support team is available around the clock. We don't just respond to messages—we work with you to find real solutions that fit your needs.
Our support specialists are trained to handle a wide range of requests, from product recommendations to technical troubleshooting. No matter the question, you can expect a professional and friendly response.
How We Can Help
Product Guidance
Our experts help you choose the right product.
Order Assistance
Modify orders, track shipments, or speed up delivery.
Warranty & Returns
Start claims or returns quickly and easily.
Technical Troubleshooting
Step-by-step solutions for product issues.
Contact Information
24/7 Phone
+1 (209) 280-3200
support@hekomart.com
Address
3401 Dale Rd, Modesto, CA 95356
Support Hours
Available 24 hours a day, 7 days a week
