As for the T2D41 diode I think it is a suppressor diode and I suggest you check this link
in case they have a valid substitute:
.
https://articulo.mercadolibre.com.ar/MLA-707808384-p6ke51a-6ke51-diodo-supresor-transitorio-unidirección-_JM
With respect to the triac a replacement is for example: MAC97A6; 97A6; of the same I upload your data sheet that
It will help you to know the parameters to consider when requesting a replacement
.
STN1A60-80 TRIAC- sheet datos..pdf [535.28kb]
Regards.