Many buyers still ask for PV1-F because the term appears in older project documents. Current solar cable procurement usually points to H1Z2Z2-K under EN 50618 / IEC 62930.
The practical question is not which name is more familiar, but which standard the project inspector, EPC and end market will accept.
H1Z2Z2-K is the safer default for new projects
H1Z2Z2-K uses cross-linked insulation and sheath materials intended for modern PV installations. It is the cleaner default for 1500V DC projects and export orders where documentation matters.
PV1-F can still appear in replacement requests
If a project asks for PV1-F, we treat it as a signal to review the specification rather than blindly quote the old wording. The end customer may simply mean solar cable.