Experimental investigation of one-shot switch based on Parylene C

To develop a trigger switch for application in the exploding foil initiator, a one-shot switch of sandwich structure with Parylene C film as dielectric layer was fabricated based on micro-fabrication technology. In the experiments, the characteristics of the switch were analyzed by applying a main voltage varying from 1.0 kV to 1.6 kV. The results show that the peak current is 1020 A and the rise time is about 240 ns when the applied voltage reaches 1.4 kV. The performance of the one-shot switch based on Parylene C is better than that based on Polyimide. The peak current shows an increasing trend with increasing the loaded voltage while the rise time is almost the same. The delay time distributes randomly between 1s and 200 s. The experimental simulation results show that the switch resistance increases with time.