JLC fabrication component substitution options - andreika-git/hellen-one GitHub Wiki
MCU power
Optional, matters only for powering board via USB. Hellen would work without it.
AP2331SA-7 C500764
AP2331W-7 C460346
AP2331TDSA-7
"2.2uH","L420" C36828 C89016
"SMD1206P050TF/24","F410, F300" C209741 C70076
Q305 C174042 C113610
stm32 176 C117817 C33993
Fuse 1206
Main fuse 5Aish
JFC1206-1500FS C136351
S1206-F-5.0A C553924
IGBT Fuse
C529795
low current output channel fuse
JK-nSMD050-30 1206 500mA C720075
TLS115
Any TLS115B or TLS115D would work as long as package (SOIC-8 or DSOP-10) matches your board. Some boards are designed to use both footprints to make life easier.