Appeal No. 1997-1186
Application No. 08/319,913
detachable from a lead frame and has a flag opening for
receiving a first pressure. The molded housing has a first
port positioned over the flag opening and the sensor die for
receiving the first pressure and a second port positioned over
the sensor die for receiving a second pressure. In addition,
the molded housing surrounds the mounting flag to secure it in
a floating manner following its detachment from the leadframe.
Claim 1 is illustrative of the claimed invention, and it
reads as follows:
1. A differential pressure sensor, comprising:
a mounting flag detachable from a leadframe and having a
flag opening for receiving a first pressure;
a sensor die having a eutectic surface mounted to a
bonding surface of said mounting flag for providing a hermetic
seal between said sensor die and said mounting surface and
coupled for receiving said first pressure; and
a molded housing having a first port positioned over said
flag opening and said sensor die for receiving said first
pressure, said molded housing having a second port positioned
over said sensor die for receiving a second pressure, and said
molded housing surrounding a portion of said mounting flag to
secure said mounting flag in a floating manner following
detachment from said leadframe to provide stress relief for
said sensor die.
The references relied on by the examiner are:
Hingorany 3,629,668 Dec. 21, 1971
Hynecek (Hynecek) 4,023,562 May 17, 1977
2
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