Method of attaching an interconnection plate to a semiconductor die within a leadframe package

A method of attaching an elevation-adaptive interconnection plate to a semiconductor die within a leadframe package having a plurality of terminal leads for external electrical connection thereto, the method comprises:

• a) providing a base leadframe having a die pad for attaching the semiconductor die thereon and providing an interconnection plate for attachment to the base leadframe and the semiconductor die;
• b) adding a base registration means onto the base leadframe and adding a plate registration means, matching the base registration means, onto the interconnection plate such that, upon an approach of the interconnection plate to the base leadframe with the semiconductor die attached thereon, the plate registration means and the base registration means would engage and guide each other causing a concomitant self-aligned attachment of the interconnection plate to the base leadframe and the semiconductor die;
• c) attaching and bonding the semiconductor die atop the die pad;
• and
• d) bringing the interconnection plate into close approach to the base leadframe to engage and lock plate registration means and base registration means to each other hence completing attachment of the interconnection plate to the semiconductor die whereby forming a leadframe package.