Picofly AIO Thread

[Tom8823]

1206 just means 12mm long by 6mm wide.

Not trying to be a smartass but this is wrong.

1206 is 0.125 in x 0.06 in or 3.2 mm x 1.6 mm

See the chart here

 

[Adran_Marit]

View attachment 360638
I'm sorry, I was directed to this thread to confirm the pin assignment of a MOSFET, but due to my own ignorance, I am unsure of where to connect the pins. I am feeling frustrated and would appreciate some guidance. I thought it might be easier to connect wires rather than remove the chip capacitor, so I would like to try it in this way. Could someone please explain to me in clear English?

https://gbatemp.net/threads/picofly-aio-thread.628951/post-10106545

This post here. Check with @binkinator if you're still unsure

 

[handsom_tomato]

Thank you for your polite response!

 

[ShadowFox7]

Hi, do you have any tip for soldering the mosfet? I'm finding very difficult to solder with my iron, because those pins are too small. Do I need a heat gun?
Thank you.

 

[rehius]

Hi, do you have any tip for soldering the mosfet? I'm finding very difficult to solder with my iron, because those pins are too small. Do I need a heat gun?
Thank you.

A good flux (I use chinese NC 559), bismuth core (melts at 138°C) and a heat gun, yes

 

[BlownUpTurtle]

Hi, do you have any tip for soldering the mosfet? I'm finding very difficult to solder with my iron, because those pins are too small. Do I need a heat gun?
Thank you.

I’d suggest either getting a flex from AliE or giving it to someone else with a scope, do not use a heat gun!

 

[wscp]

I need some help with this; is there a different mosfet with similar enough characteristics that can substitute for this secific model? Coz nobodys selling it locally in my country and Id have to pay customs with my kidneys if I imported it.

Post automatically merged: Mar 22, 2023

I sort of posted a couple datasheets in the original thread and asked if those would work but I got no response...

 

[binkinator]

Not trying to be a smartass but this is wrong.

1206 is 0.125 in x 0.06 in or 3.2 mm x 1.6 mm

See the chart here

You are correct! I tried to be metric but it insists on being imperial units!

1206 is indeed .125in by .06in and NOT 12mm by 06mm.

 

[linuxares]

Hi, do you have any tip for soldering the mosfet? I'm finding very difficult to solder with my iron, because those pins are too small. Do I need a heat gun?
Thank you.

I saw in the other thread you need a j tip for the solder iron.
Its super fine
https://hakkousa.com/products/soldering/t30-j-angled-tip.html

 

[rehius]

I need some help with this; is there a different mosfet with similar enough characteristics that can substitute for this secific model? Coz nobodys selling it locally in my country and Id have to pay customs with my kidneys if I imported it.

Post automatically merged: Mar 22, 2023

I sort of posted a couple datasheets in the original thread and asked if those would work but I got no response...

you have posted much bigger and much weaker ones.
you need 2mm x 2mm SMD mosfet with 70A peak current

np2016 is an alternative

 

[wscp]

Okay, thanks for the info. I'm not thinking about how it will fit, mainly availability.

 

[rehius]

Okay, thanks for the info. I'm not thinking about how it will fit, mainly availability.

FDMA7672 is another one

 

[wscp]

Would this work? https://www.trustedparts.com/en/part/texas-instruments/CSD18510Q5B

 

[rehius]

Would this work? https://www.trustedparts.com/en/part/texas-instruments/CSD18510Q5B

N type, 400 A, could be fine (even overkill)
but it is big, with required thick short wires it is easy to break caps

 

[wscp]

I'm planning to use 26awg, would I need to go smaller?

Post automatically merged: Mar 22, 2023

I would want to attach wires to the capacitor, then connect the other end to the mosfet. You're saying the wires need to be very short?

I have a switch lite btw

 

[marhalloweenvt]

I think maybe I should modify Sx cable to fit this project, so that we could stay away completely with hwfly. The motivation behind this is I would like to prevent people from damage their APU with Mosfet and in the future, people don't have to buy spare part from hwfly.

Update: I have modified and made it smaller and cheaper than original sx cpu cable.

WIP: Increase pad size to easier hand-solder.

Cost check with Oshpark for Flex option: $2.20 for 3.

Feedbacks/advices are welcomed.

BTW,@rehius just want to ask a quick question, Can I replace IRFHS8342 with:
- IRF7103
- AO3402
=> The point of this replacement is making it a little easier for novice/newbie who are not capable of soldering tiny components.
Thanks in advanced.

 

[BlownUpTurtle]

Update: I have modified and made it smaller and cheaper than original sx cpu cable.

WIP: Increase pad size to easier hand-solder.
View attachment 360650

Cost check with Oshpark for Flex option: $2.20 for 3.
View attachment 360652

Feedbacks/advices are welcomed.

BTW,@rehius just want to ask a quick question, Can I replace IRFHS8342 with:
- IRF7103
- AO3402

Thanks in advanced.

Mounts like on the SX CPU flex would be advisable, reduces he risk of the caps being torn off from negligence or a hard fall etc

 

[OrGoN3]

No wait versus sans no wait firmwares. How long is the wait? Is the wait for a logo or am I missing something here?

 

[Phantomas77]

Update: I have modified and made it smaller and cheaper than original sx cpu cable.

WIP: Increase pad size to easier hand-solder.
View attachment 360650

Cost check with Oshpark for Flex option: $2.20 for 3.
View attachment 360652

Feedbacks/advices are welcomed.

BTW,@rehius just want to ask a quick question, Can I replace IRFHS8342 with:
- IRF7103
- AO3402

Thanks in advanced.

This is awesome work!
If I may, a couple of suggestions:

i) move the P15 (gate) test point to a different position, so it stays away from the metallic shell surrounding the CPU (less probability of shorts)

ii) change the "k" to "c" as requested on the other thread by rehius.

PS: loved the homebrew slogan

 

[Adran_Marit]

I'm planning to use 26awg, would I need to go smaller?

Post automatically merged: Mar 22, 2023

I would want to attach wires to the capacitor, then connect the other end to the mosfet. You're saying the wires need to be very short?

I have a switch lite btw

yes smaller, 32/34/36 awg are the most common I believe.