What is the shipping charge?

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Can these converters use in parallel to achieve higher power capacity?

We strongly don't suggest such application. Because each converter, though the part number is the same, will have slight difference in output/resistance. This slight difference will often be enlarged when use in parellel. For example, if you use two 24V to 12V converter rated 120W output in parallel. If you use them to power a 150W device, one make take up 130W and the other only provide 20W. And this will surely harm the converter working at 130W.

How many can you produce in a month?

For standard types, such as 12V to 5V converter, which don't requires re-design, currently our production capacity is about 20,000 pcs per month.

Do they have reverse polaries protection at input?

No. This needs your extra careful. If you reversed the input polars, it will damage the converter in seconds.
Because the room is very limited and to achieve a higher convertion effeciency, we don't implement it for this series.

What if I need a similar converter but with customized input/outputs in low cost series?

It will cost engineering resources which is very limited and important to us. We only provide customize service for companies/enterprises.

Why the price is so high (so low) compared to a very similar type?

This is mainly because the quantity of the type we produce each time. Some modules have a regular demand every month, and we produce in big volumn. These modules will have very competetive prices. On the contrary, some modules are seldomly asked for, or don't have stock, we will charge a higher price to cover the costs.

I have other questions!

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