Patent ID: 8104403

Claim:
A header assembly having a plurality of electrode pins and closing the opening of a cup body having ignition powder therein, characterized in that said header assembly comprises: (a) a header holding said plurality of electrode pins to be insulated from one another; (b) an ignition element mounting capacitor including outer circumferential surfaces and, at the center of its outer circumferential surfaces, external terminal electrodes; (c) said external terminal electrodes being for electrically connecting to an ignition element mounted on the capacitor; (d) said ignition element being a semiconductor bridge (SCB) chip comprising an SCB and its substrate mounted directly on the capacitor; (e) an IC including (i) first, second, and third electrode pads to be electrically connected to end electrodes of said ignition element mounting capacitor and said external terminal electrodes, and (ii) connection electrodes to be electrically connected to the electrode pins of said header for communication external to said header, wherein: (f) said IC is located on said header; and (g) said ignition element mounting capacitor is mounted directly on said IC and electrically connected to said electrode pins through said connection electrodes provided on said IC, wherein the term “IC” means integrated circuit.