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High temperature RFID tag

  • US 6,255,949 B1
  • Filed: 09/01/1999
  • Issued: 07/03/2001
  • Est. Priority Date: 10/15/1997
  • Status: Expired due to Term
First Claim
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1. A RFID tag, comprising:

  • a housing and substrate assembly, said housing having base and a top, said base and said top forming a chamber therein, said housing comprising a first thermally resistant material, said substrate assembly including a substrate having an integrated circuit, said substrate comprising a second thermally resistant material, said substrate assembly being disposed in said chamber, said housing and substrate assembly jointly having a survival temperature range of approximately 220°

    C. to 300°

    C. and an operating temperature range of approximately −

    18°

    C. to 135°

    C., said housing and substrate assembly jointly being capable of exposure to cyclic changes in temperature to and between said operating temperature range and said survival temperature range without substantially affecting the intended functions of the tag.

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