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What does a power semiconductor assembly company actually do?..and why?

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Zbig:

tooki:

--- Quote from: treez on June 02, 2020, 01:32:35 pm ---Hi,
Do you know what this sort of company actually do?....

https://www.ppi-uk.com/assemblies/

…I mean, they  purport to make power semiconductor assemblies for multi-kilowatt power supplies.

This seems very odd to me…..i  mean, if you could do that, wouldn’t you just make the  whole power supply anyway? Why just do the  attachment of the power semiconductor to the heatsink?

Surely the overall power supply designer would want to do the power semiconductor heatsinking themselves anyway?
How can companies like this make money?

I cant imagine designing a power supply and then saying…oh yeah, we’ll outsource the power semiconductor heatsinking/assembly  etc to a private company…..surely that can't be done?….its an intrinsic part of the power supply and the power supply designer should do it?

Am I wrong?

--- End quote ---
Oh for fuck’s sake, dude... 😒

Ever heard of specialization? Of cottage industries? There are thousands (perhaps millions) of little companies around the world specializing in some oddball niche thing. For crying out loud, not even the biggest companies in the world make every part for their products: they farm it out to a specialist supplier for each part.

Honestly, man, and I do not say this as a joke, you should leave electronics and find some other career for which you have even the tiniest sliver of aptitude. Because electronics ain’t it.

coppercone2:
it allows people to enter a market easily but there might be strong value added to a company if you can do that stuff yourself, but it requires alot of tooling and fabrication people to pull that off. its likely very expensive


I.e. cost of real bus bar:
https://www.hawkusa.com/manufacturers/marinco/connectors/777-bb4s-500?gclid=EAIaIQobChMI5KHOlqnk6QIVAY_ICh10wApmEAYYASABEgI_6_D_BwE

ANd they might work things out with custom extrusion people for economical heatsinks. If someone there has connections and knows how to deal with extruder industry / is willing, you can save alot of money and make it specialized. If a noob did it, it would probobly be CNC machined or something, and be very expensive. Makes sense for them since they can decide what package size transistor ecosystem they want to work with.

coppice:
"Formerly the Power Assembly Division of International Rectifier. Power Products International have been designing and manufacturing power rectifier, thyristor and latterly IGBT assemblies for over forty years.". I guess IR had this division in the UK from the long gone past when the UK was a major centre for switched mode power products, felt it didn't fit their overall business, and spun it off. There is usually a market for modularising hard to develop functions, especially ones where a specialist can offer interesting packaging. This tends to appeal to smaller manufacturers, as it can fill gaps in their expertise, and minimise their R&D spend.

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