OVERMOLDED LEAD FRAME ASSEMBLY FOR PRESSURE SENSING APPLICATIONS

A process of forming an overmolded lead frame assembly for a pressure sensing application includes clamping both sides of a lead frame to performing a primary overmolding operation to prevent resin flash on wire bonding areas on the lead frame. The process also includes performing the primary overmo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BAE, Jun H, HERRON, Andrew C, BROWN, David T
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MICROSTRUCTURAL TECHNOLOGY PERFORMING OPERATIONS PHYSICS PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTUREOR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	A process of forming an overmolded lead frame assembly for a pressure sensing application includes clamping both sides of a lead frame to performing a primary overmolding operation to prevent resin flash on wire bonding areas on the lead frame. The process also includes performing the primary overmolding operation to form a primary mold that covers selected portions of the lead frame on first and second sides of the lead frame assembly. The primary mold forms an electronics cavity on the first side of the lead frame assembly to enable subsequent wire-bonding of a microelectromechanical system (MEMS) pressure sensing element to the wire bonding areas. The process further includes performing a secondary overmolding operation to form a secondary mold on the second side of the lead frame assembly. The secondary mold covers an exposed portion of the lead frame beneath the wire bonding areas.