The PC series of bombs differed from the SC series because they had thick cases for enhanced penetration of armored targets like warships or reinforced concrete fortifications.

The PC series served as a base for the later PC RS series rocket propelled bombs which were designed to enhance penetration by increasing their terminal velocity.

The PC 1400 was also modified by adding a guidance package to become the Fritz X guided bomb.

[2] The body was of one-piece forged steel construction which was filled through the base with TNT or Trialen 105, a mixture of 15% RDX, 70% TNT and 15% aluminum powder and was fitted with a cast aluminum or magnesium alloy 4 finned tail with a cylindrical strut.

There was a single transverse fuze pocket near the base of the bomb and there were two central exploders which ran through the explosives.