Review/Teardown of a Miniware MHP30 SMD Rework Hot Plate
Переглядів 4,946
День томуThis Miniware MHP30 hot plate was sent in by PCBWay. Product link: www.pcbway.com/project/gifts_... Teardown pictures: www.kerrywong.com/2023/10/10/t...
00:00 Overview
02:43 Menu options
04:22 Heat up time
05:57 Testing
09:35 Teardown, conclusion
@romancharak3675 6 місяців тому
What a nicely designed device !
@boots7859 6 місяців тому
Very neat review. Was just wondering though, as I have a small rp2040 project coming up. While I can spring for one of these no problem, was wondering if a simple aluminum or copper board supported above something like a candle would work in a pinch? I've got an laser temp gun, and while fine temp control might not be there, gross control via raising or lowering the board or candle/sterno seems intuitive. Maybe posting at 0547 is not ideal...
@KerryWongBlog 6 місяців тому
Flame under a plate will not work (I tried this many years ago :-). The issue is that the heating would not be uniform and you would not be able to control the temperature easily. It may be easier to modify a toaster oven for reflowing.
@cambridgemart2075 5 місяців тому
100Ohms for the TC sounds like it could be a Pt100 device.
@goosenp 6 місяців тому
Do they sell replacement hot plates yet? I recall then not being available when they came out
@damexoid 5 місяців тому
doubt they will do that since there is no miniware anymore. they got renamed to 'morningtools' or something like that.
@thanhvan0212 4 місяці тому
mâm nhôm dùng Wire Nichrome gì ?
@BeefIngot Місяць тому
What do you think of the MHP50?
@simontay4851 6 місяців тому
What is switching the heating element on/off. I expected a high current MOSFET in either a TO-220 or surface mount D-Pak package. Is there a larger version of this? I want to pre heat larger boards such as graphics cards to reflow the GPU. 3cm x 3cm hot plate is tiny. 10cmx10cm would be more useful.
@KerryWongBlog 6 місяців тому
That's an excellent question. I took a look at the high resolution pictures again (www.kerrywong.com/blog/wp-content/uploads/2023/10/circuitboard2.jpg) and the only component that could possibly be a MOSFET is the SOT23 device in the middle (IALLM), but the switching current is at roughly 3A. You saw my measurement of the pins from the hot plate itself. The two pins measured 6.4 Ohm are clearly for the heating element so the MOSFET can't be on the hotplate either.
@zaprodk 6 місяців тому
It's a pretty low current, so it doesn't need to be a large package that needs to dissipate 50 watts on a heatsink. A modern low-loss MOSFET in a SOT23 will do.
@neiliewheeliebin 4 місяці тому
Miniware just posted a video of a new MHP50 hot plate, it has fan cooling & is twice the size of the MHP30, looks good
@MopokesAdventures 4 місяці тому
Could you power this by plugging the usb cable into a laptop or a power bank?
@divingquokka 3 місяці тому
If they can do PD. The hotplate will not work at 5V.
@pchunter168 6 місяців тому
😮
@yurkshirelad 6 місяців тому
It’s so small that it’s hard to believe it could really be useful. But it is. So weird.
@user-yk1cw8im4h 27 днів тому
What a weird take
@denisgluk431 Місяць тому
I don't recommend buying. It costs inadequate money, the controls are inconvenient. I have never used mine; it broke during storage. Correspondence showed that the manufacturer is not interested in these problems. There is some small guarantee that requires documents, and nothing can be decided outside of it. It is impossible to buy a heating pad separately; It’s unclear why they made him replaceable.
@user-yk1cw8im4h 27 днів тому
Talk about pointless over engineering that improves absolutely nothing.
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