ADD has developed a pin type slapper detonator for application in In-line fuzing system. This detonator is qualified and under consideration for various other fields such as aerospace. This paper presents the detonator design and performance test results according to variation of parameters such as copper thin film process, bridge dimension etc.. Exploding foil initiators were designed to function at a firing energy of 0.4 J. Thin metal foil on polyimide film fabricated by a two step process ; sputtering and electroplating with monel as a tie coat was good for slapper detonator function. For 5 um copper thickness, measured flyer velocity of bridge foil assembly was in the range of 3.4km/s. Detonators with bridge dimension of 200μm x 200μm and 300μm x 300μm had almost the same firing characteristics.
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