Circuit arrangement, in particular for triggering an ignition end stage

A circuit arrangement, comprising:

• a power switching transistor;
• and
• at least one switchable electrical auxiliary path arrangement which is configured as at least one of a freewheeling circuit and an electrical auxiliary channel, the electrical auxiliary path arrangement including a triggerable four-layer element;
• wherein the triggerable four-layer element has a metallization, an anode, a cathode and a field plate;
• wherein the circuit arrangement includes a backside;
• wherein a vertical current flow, which is distinguished from a main current flow, flows over the backside to the metallization;
• wherein the anode is at an anode potential;
• wherein the field plate is at the anode potential;
• wherein the field plate has a projection;
• wherein the metallization contacts the anode;
• and
• wherein the field plate overlaps the anode such that the projection projects over the anode in a direction extending toward the cathode, the projection preventing a punch-through from the cathode to the anode.