u s pat no 5 629 239 the disclosure of which is hereby incorporated by reference herein the frangible sections of the leads may be of the same width as the adjacent portions of the lead but of lesser thickness the frangible section desirably has a moment of inertia about the horizontal neutral plane of the lead which is substantially less than the moment of inertia of the immediately adjacent sections stated another way the frangible section desirably is substantially weaker in bending and in vertical directions than the adjacent sections of the lead the entire lead other than the body attached end 22 desirably is releasably connected to the top surface 14 of body 12 for example the lead may have a low adhesion connection to the polymeric body as described for example in u s pat no 5 763 941 the disclosure of which is incorporated by reference herein alternatively the lead may have a releasable connection to the polymeric body 12 of the types described in the 39 964 patent or in copending commonly assigned u s patent application ser no 09 020 750 filed feb 9 1998 and ser no 09 195 371 filed nov 18 1998 the disclosures of which are also incorporated by reference herein free end 3 and 30 of each lead carries a bonding material 32 on its upper face i e on the face directed away from body 12 bonding material 32 may be a solder or other metallic bonding material or else may be an adhesive or other non metallic bonding materials as bonding material 32 is not.