Which damages may occur in CSP LEDs due to the reflow soldering process ?

26 May 2024 0 8K Report

I am investigating a failure of a CSP LED that fails after placement and reflowing

Badges
Science topic

More Eyal Tamir's questions See All

How to use latitude and longitude information to assign locations to districts in Afghanistan?

Dear all, I am trying to figure out how to assign the locations of violent events, which are recorded in ICEWS, to districts in Afghanistan based on latitude and longitude information. Therefore,...

31 October 2020 9,762 4 View

How much soluble sugar is in xylem sap?

What is the range of soluble sugar concentration in xylem sap of common tree species (e.g. pine, lemon; NOT sugar maple)? And how would you recommend measuring it (HPLC/ refractometry/ enzymatic/...

13 November 2016 9,639 6 View

Which method(s) would you consider reliable for measurement of xylem embolism?

e.g. on branch segments and in vivo.

27 September 2016 6,037 10 View

Cloud storage and backup comparison - any thoughts?

Cloud services are becoming a critical aspect of day to day work. With the amount of devices, projects and collaborations growing, the ability to manage backup and sharing capabilities is crucial....

08 May 2014 9,036 2 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

Anyone found any research papers on solar furnace design calculations (for solar concentration)?

I am thinking about working on solar furnace with heliostats that concentrate sunlight and heat molten salt, but currently no luck with research. Not a lot of papers based on the subject. (check...

01 March 2021 5,023 5 View

How to size battery banks?

I am designing a small grid connected solar PV power-plant. As the battery's capacity is specified in Ah and demand in kWh. What is the best way to size the battery bank? I have battery price in...

28 February 2021 1,638 3 View

How to design a boost converter for a mppt controller?

I have a doubt on how to select the inductor and capacitor value when I want to implement MPPT controller. This is because we always take a maximum output voltage and current but in this case, we...

28 February 2021 3,637 2 View

How to sample data to increase presence of solar panels in the images?

I am working on creating deep neural network on geospatial dataset and wanted to know how to do the sampling so that I can increase the presence of solar panels in the images. I cannot use entire...

25 February 2021 3,936 6 View

How does an AC-DC power supply Flyback Converter Based USB Charger Model using Matlab/Simulink looks like?

I am required to learn about Flyback converters and I got stuck not knowing to full design of the power supply flyback converter Based USB Charger Model using Simulink, especially the design model...

25 February 2021 5,435 2 View