Initiator assemblies for perforating gun systems

A charge carrier assembly for a perforating gun system, comprising:

• a cylindrical charge carrier having a central axis;
• a first endplate coupled to a first end of the charge carrier;
• a second endplate coupled to a second end of the charge carrier;
• and
• an initiator assembly comprising an electrical switch, wherein the electrical switch has a maximum length extending in a direction parallel the central axis that is less than a maximum width of the electrical switch extending in an orthogonal direction relative to the central axis;
• wherein the electrical switch is configured to detonate the detonator in response to receiving a firing signal.

A method for assembling a charge carrier assembly for a perforating gun system, comprising:

• (a) coupling a first endplate and a second endplate to a charge carrier having a central axis;
• (b) inserting a detonator into a detonator holder of the second endplate;
• and
• (c) coupling an initiator assembly comprising an electrical switch to the charge carrier, wherein the electrical switch has a maximum length extending in a direction parallel the central axis that is less than a maximum width of the electrical switch extending in an orthogonal direction relative to the central axis, and wherein the electrical switch is configured to detonate the detonator in response to receiving a firing signal.