Hi, I’m very new to this and encountered a problem when ordering the AIO v4.5 standard PCB from JLCPCB. Most components seem to register correctly. However, 2 parts are apparently not matched “u4 GNSS power” and “u5 Teensy/IMUPower”. I’m not sure what those parts actually are, so can someone please help me with what to do here? Should I just manually select a part? And if so, what part?
Also, it seems that the Ampseal connector is not in stock, but I assume I can just order this from AliExpress and solder it myself?
Thanks
Update: I found out that the components U4 and U5 are “K7805M-1000R3” DC-DC converters manufactured by “Mornsun”. On their Wikipedia page I found this:
Which probably explains why I cant seem to find anywhere that sells this part.
Can anyone help me find an alternative part that would work?
The ‘GNSS power” and “u5 Teensy/IMUPower’ is just where the part is for, the 'PWRM-TH_K - ’ part is the components name. Those and the connector are easy to solder. 
1 Like
Where are you from, if from europe Farnell is a supplier I used
Im european too, farnell no longer sells them either 
. However on Digikey they listed this as a substitute: https://www.digikey.dk/en/products/detail/recom-power/R-78E5-0-1-0/4930585 They look the same to me, so i think i will try to use them as a replacement
Yeah the output amperage being the same is important, and the voltage ofcourse
1 Like
And this one?
1 Like
Did this work for you?
Yes it worked perfectly 
Hi, starting my own project slowly and now it is time to order pcb. JLCPCB doesnt offer still any replacement for those regulators. Would it be safe option to use their part number C5369649 as a replacement?
Link:
https://jlcpcb.com/partdetail/YLPTEC-K7805M1000R3/C5369649
Should work, pin arrangement is equal.
( 底视图 = Bottom View )
Hello all, I am about to place an order with JLCPCB and ran into the same problem with U4 and U5. Do I use C5369649 for both U4 and U5 ?
TIA
Yes, the specs seem correct, so it should work