Flame retardant resin composition and molded article thereof

A flame retardant resin composition comprising:

• 100 parts by weight of a resin component (component A) which contains at least 50 wt % of a polycarbonate (component A-1) having a unit represented by the following formula (A-1);
• and
• 1 to 100 parts by weight of an organic phosphorus compound (component B) represented by the following formula (1):
• (in the above formula, X1 and X2 are each independently an aromatic substituted alkyl group represented by the following formula (2):
• ALAr)n (2)
• (in the above formula, AL is a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, Ar is a phenyl group, naphthyl group or anthryl group, all of which may have a substituent, and may be bonded to any carbon atom contained in AL, and n is an integer of 1 to 3)).