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A soldagem caseira de PCB de alumínio é diferente dos PCBs comuns na linha de montagem da fábrica??

Estou me perguntando se encomendei algumas placas de alumínio que contêm transistores D2pak e quero soldar algumas delas para teste. É possível usar equipamento básico ou é necessário um forno de solda por refluxo.

sim.

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

Make by Yourself Montagem euine
You may need some forced air for ramp-down and a thermal couple probe to “perfil” 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.

consulte Mais informação: PCB de alumínio

#Assembléia PCB

Foto de OliverSmith

OliverSmith

Oliver é um engenheiro eletrônico experiente, especializado em design de PCB, circuitos analógicos, sistemas embarcados, e prototipagem. Seu profundo conhecimento abrange a captura esquemática, codificação de firmware, simulação, disposição, teste, e solução de problemas. Oliver se destaca em levar projetos desde o conceito até a produção em massa usando seus talentos de design elétrico e aptidão mecânica.
Foto de OliverSmith

OliverSmith

Oliver é um engenheiro eletrônico experiente, especializado em design de PCB, circuitos analógicos, sistemas embarcados, e prototipagem. Seu profundo conhecimento abrange a captura esquemática, codificação de firmware, simulação, disposição, teste, e solução de problemas. Oliver se destaca em levar projetos desde o conceito até a produção em massa usando seus talentos de design elétrico e aptidão mecânica.

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O PCB é venenoso?

We are a green energy brand which sells solar water heater. All of our products are almost use PCB. And we want to know whether it is poisonous to human and environment?

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I am getting a PCB manufactured for a project that I am working on. One of the parts, the A4950 motor driver, has a “almofada” on the bottom, which is meant to be soldered to GND of the PCB for thermal dissipation. I was thinking about the prototyping, and I am unsure how I would go about (using a soldering iron), soldering the pad on the bottom.

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