Pressure contact open-circuit detector

A method of manufacturing an electronic device including the steps of

• soldering an electronic component to a carrier, and
• testing a solder connection made by said soldering step, said testing step including the further steps of
• applying a transducer means to said electronic component and said carrier,
• causing vibration at one of said electronic component and said carrier using said transducer means,
• detecting vibration at another of said electronic component and said carrier using said transducer means, and producing an electrical signal in accordance with said detected vibration,
• analyzing said vibration received in accordance with said detecting step in comparison with said vibration caused by said step of causing vibration for at least one of harmonics, energy, voltage, duration, rise time and time delay,
• determining integrity of said solder connection based on results of said analyzing step.

Apparatus having a reduced likelihood of failure after being placed in service which is made by a process including the steps of

• soldering an electronic component to a carrier, and
• testing a connection made by said soldering step, said testing step including the further steps of
• applying a transducer means to said electronic component and said carrier,
• causing vibration at one of said electronic component and said carrier using said transducer means,
• detecting vibration at another of said electronic component and said carrier using said transducer means, and producing an electrical signal in accordance with said detected vibration,
• analyzing said vibration received in accordance with said detecting step in comparison with said vibration caused by said step of causing vibration for at least one of harmonics, energy, voltage, duration, rise time and time delay,
• determining integrity of said solder connection based on results of said analyzing step.

Apparatus for testing an electronic device including

• a calibrator means for providing a periodic first electrical signal having a time-varying amplitude envelope,
• a first transducer means connected to receive said first electrical signal for producing vibration,
• a second transducer means for detecting vibration and producing a second electrical signal in response thereto, and
• means for comparing said first electrical signal and said second electrical signal with respect to at least one of harmonics, energy, voltage, duration, rise time and time delay.