A copper strap for a semiconductor device package having a contact electrically connected to a die electrode, a leg portion electrically connected to a lead frame, a web portion positioned between the contact and the leg portion and connected to the leg portion and a connection region connecting the web portion to the contact. A piezoelectric vibrator includes an airtight terminal having two leads, a vibrating piece connected to the lead and a case covering a periphery of the vibrating piece and sealed on an outer circumference of the airtight terminal, wherein a level difference is provided in a mount part of the vibrating piece fixed to the lead. An expert associated with the AMA session may be presented with the question. A first portion of the fluid, containing contaminants, is deposited into the sequestration chamber.