6 key points to identify the quality of LED light strips

Publisher:心若水仙Latest update time:2011-10-24 Source: 阿里巴巴Keywords:LED Reading articles on mobile phones Scan QR code
Read articles on your mobile phone anytime, anywhere
LED light strip production has a low entry threshold, so many people have started this project. However, experienced people still have ways to identify. The LED light strips produced by regular manufacturers and the knockoff LED light strips (that is, products produced entirely by manual labor in a rental house) can be seen at a glance from the appearance. Let's talk about how to identify the quality of LED light strips with your eyes:

1. Look at the solder joints. The LED light strips produced by regular LED light strip manufacturers are produced using SMT patch technology, solder paste and reflow soldering technology. Therefore, the solder joints on the LED light strips are relatively smooth and the amount of solder is not much. The solder joints extend from the FPC pad to the LED electrode in an arc shape. The amount of solder on the knockoff LED light strips is uneven, mostly in the form of a dot covering the solder foot, and there will be different degrees of tin tips, which is a typical phenomenon of manual soldering.

2. Look at the quality of the FPC. FPC is divided into two types: copper-clad and rolled copper. The copper foil of the copper-clad board is convex, and if you look closely, you can see it from the connection between the pad and the FPC. The rolled copper is closely connected to the FPC and can be bent arbitrarily without the pad falling off. If the copper-clad board is bent too much, the pad will fall off. Excessive temperature during maintenance will also cause the pad to fall off.

3. Check the cleanliness of the surface of the LED light strip. If the LED light strip is produced by SMT process, the surface cleanliness is very good, and no impurities and stains can be seen. However, if the knockoff LED light strip is produced by hand welding process, no matter how it is cleaned, there will be stains and traces of cleaning on its surface, and there will be flux and tin slag residue on the surface of FPC.

4. Check the packaging. Regular LED light strips will be packaged in anti-static coils, usually 5 meters or 10 meters per roll, and then sealed with anti-static moisture-proof packaging bags on the outside. The knockoff LED light strip will use recycled coils to save costs, and there are no anti-static moisture-proof packaging bags. A careful look at the coils can show that there are traces and scratches left on the surface when the labels are removed.

5. Check the labels. Regular LED light strip packaging bags and reels will have printed labels, not printed labels. The labels of the knockoff versions are printed, and the specifications and parameters are not uniform.

6. Check the accessories. Regular LED light strips will have instructions for use and light strip specifications in the packaging box, and will also be equipped with LED light strip connectors or card holders; while the knockoff version of the LED light strip packaging box does not have these accessories, because some manufacturers still save money.
Keywords:LED Reference address:6 key points to identify the quality of LED light strips

Previous article:Explaining high current LED driving technology
Next article:How to make an electronic light box-how to make an LED electronic light box

Recommended ReadingLatest update time:2024-11-16 15:23

Automotive LEDs enter BYD/JAC and other supply chains
On August 21, Jufei Optoelectronics released its semi-annual report stating that the company's operating income in the first half of the year was 1 billion yuan, a year-on-year decrease of 12.75%; the net profit attributable to shareholders of the listed company was 143 million yuan, a year-on-year decrease of 2.40%.
[Mobile phone portable]
Automotive LEDs enter BYD/JAC and other supply chains
Detailed explanation of the design principle of real-time light-chasing self-sensing LED street light system
The real-time light-chasing self-sensing street light system uses new energy and saves electricity. The use of solar energy is gaining more and more attention. The design uses solar power generation for energy-saving street lighting . The street light system is interconnected with the mains, and has air quality dete
[Power Management]
Detailed explanation of the design principle of real-time light-chasing self-sensing LED street light system
S5PV210 LED Application (I)
Prepare for analysis   It looks like just an LED, but the difference between S5PV210 and S3C2440 is not in the LED, but in the process of booting from NandFlash. For S3C2440, as long as there is no problem with the program, it can generally run normally if you find a way to download the program to the 0 address of Nan
[Microcontroller]
51 single-chip LED light gradual PWM dimming (gradually bright and dim) C language and assembly source program
PWM control LED lights gradually brighten and dim program Applicable to ME500 development system Short JP41-2 Select 8 LED lights PWM-Pulse Width Modulation (Pulse Width Modulation) PWM is a kind of cycle? The duty cycle of high and low levels can modulate the square wave signal. Press K2-down, the PWM value decreases
[Microcontroller]
How to improve the stability of long-distance communication of LED display screens
As we all know, data transmission is a very important link in the field of industrial control, and the stability of data transmission directly affects the reliability of the product. Therefore, how to improve the reliability and stability of data transmission has become a topic that engineers have to face. The foll
[Power Management]
How to improve the stability of long-distance communication of LED display screens
112W Boost LED Driver Technology Based on MAX16834
The MAX16834 is a current-mode high-brightness LED (HB LED) driver from Maxim for boost, boost-buck, SEPIC, and high-side buck topologies. It operates from 4.75V to 28V, features 3000:1 PWM dimming/analog dimming, and programmable frequency from 100kHz to 1MHz. It is mainly used in single-string LED LCD b
[Power Management]
112W Boost LED Driver Technology Based on MAX16834
LED display circuit
LED display circuit Figure 1 Segment digital tube LED display circuit In Figure 2, the 80C51 microcontroller is used. The capacitors C1, C2 and CRY1 form the clock oscillation circuit. This part basically does not need to be debugged. As long as the components are reliable, it will start normally. C3 and R
[Power Management]
LED display circuit
Introduction to Active Thermal Management of LED Drivers
LED light sources are the general trend of the lighting industry, but the overall luminous efficiency has not yet met market requirements. Among them, heat dissipation defects are the first and most difficult issue to be solved. Currently, the industry has developed active thermal management using LED drivers, whi
[Power Management]
Introduction to Active Thermal Management of LED Drivers
Latest Power Management Articles
Change More Related Popular Components

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

About Us Customer Service Contact Information Datasheet Sitemap LatestNews


Room 1530, 15th Floor, Building B, No.18 Zhongguancun Street, Haidian District, Beijing, Postal Code: 100190 China Telephone: 008610 8235 0740

Copyright © 2005-2024 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号