Isolated a component (5)
I believe the answer is:
apart
'isolated' is the definition.
('apart' can be a synonym of 'isolated')
'a component' is the wordplay.
'component' becomes 'part' (I've seen this before**).
'a'+'part'='APART'
(Other definitions for apart that I've seen before include "in isolation" , "Independently" , "away" , "Separated physically" , "Cut off - in pieces" .)