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Optical transmitter package assembly including lead frame having exposed flange with key

  • US 5,808,325 A
  • Filed: 06/28/1996
  • Issued: 09/15/1998
  • Est. Priority Date: 06/28/1996
  • Status: Expired due to Term
First Claim
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1. A package assembly comprising:

  • a leadframe comprising a flag and at least three leads, wherein a first lead of said at least three leads is integral with said flag and said flag further includes a locating flange disposed around a periphery of said flag and having at least one key formed in said locating flange;

    an optical transmitter mounted to said flag at a height and lateral alignment determined in response to said locating flange and said at least one key;

    a package enclosing said optical transmitter and a portion of said leadframe so that said locating flange and said at least one key are disposed outside of said package; and

    an optical element mounted to said package above said optical transmitter and optically coupled to said optical transmitter.

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