Is home-made soldering aluminum PCB soldering different from ordinary PCBs in factory assembly line?

I am wondering if i ordered some aluminum pcbs that contain D2pak transistors and i want to solder a couple of them for testing is it possible using basic equipment or does it need an reflow soldering oven.

PCB Assembly
November 28, 2023

Yes.

The solder reflow heat mass is significantly greater in assembly line.

Make by Yourself

Assembly Line

You may need some forced air for ramp-down and a thermal couple probe to “profile” a bare board to match the LED recommended ramp rates, peak liquidus dwell and cooling rates to prevent solder stress failures.

If you do not have thermal couples , estimate the liquidus point when a tiny blob of solder melts and the duration it is melted. and your overall profile time from the datasheet. Avoid too slow and too fast as the wire bond may shear inside.

Assembly line process engineers do this with a thermally protected data collection module.

It slow down the conveyor speeds to absorb the higher heat mass as well as accelerate the temperature rise in the number of zones in their control. Too slow is a reliability issue for LEDs and the overall time to ramp up and down must not be exceeded for this reason.

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

Oliver Smith

What Others Are Asking

Are there any SMD components that can bear 1kV voltage?

In my current design, just for uniformity I wish to keep all the components as SMD. There is one copper line on the PCB which goes up to 1000V (with current in milliamps obviously,) for which I need to attach a resistor and capacitor across it. Are there any SMD components that I can use?

Oliver Smith December 7, 2023

Why the PCB is cold, but LED bulbs are still hot?

I have a THERMAL problem when designing a power LED ALUMINUM PCB. I have 10 5W UV power LEDs.Coldwater flows through water heat sink continuously. The problem is the PCB is cold, but LED bulbs are still hot? Can anyone give me some advice.

Oliver Smith October 27, 2023

Is it safe to use UK main 230V on stripboard?

Is it safe to use mains (UK 230V) on stripboard? It will be going to a transformer so I can control some appliance. Or should I design a custom PCB to do this?

Oliver Smith November 28, 2023