Apparatus for performing a pull test

Abstract

Apparatus for performing a pull test in order to determine the resistance of a bonded wire connection to tractional force, comprising a bonded-wire loop (5) between the two bonded contacts on a substrate (1), with a traction hook (7) that can be controllably inserted under the wire loop, a drive device that is connected to the hook and generates a tractional force directed substantially perpendicular to the substrate surface, a force-measurement device (21) associated with the hook to detect the tractional force at each moment, and a recording device connected to the force-measurement device in order to record a breaking-force value for the bonded-wire connection, wherein the force-measurement device (21) is disposed substantially coaxially with the tractional-force vector and detection means (40, 50, 90, 100) to detect the highest point of the bonded-wire loop are provided, as well as position control means (20, 30) for the automatic positioning of the traction hook, and hence the point of origin of the tractional-force vector, below the highest point of the bonded-wire loop.

Dependencies are inferred from the claim text.