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A mounting system for an integrated circuit employs a novel load cell having a backing plate, a bow spring and a load distribution plate. The load cell controls the loading forces on contacts of an integrated circuit socket. A heat sink having a base includes a pedestal extending from the base that

A mounting system for an integrated circuit employs a novel load cell having a backing plate, a bow spring and a load distribution plate. The load cell controls the loading forces on contacts of an integrated circuit socket. A heat sink having a base includes a pedestal extending from the base that abuts the integrated circuit for purposes of heat removal. Springs are employed to provide loading forces for the heat sink that are lower than the loading forces for the integrated circuit socket contacts.

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A mounting system for an integrated circuit employs a novel load cell having a backing plate, a bow spring and a load distribution plate. The load cell controls the loading forces on contacts of an integrated circuit socket. A heat sink having a base includes a pedestal extending from the base that

A mounting system for an integrated circuit employs a novel load cell having a backing plate, a bow spring and a load distribution plate. The load cell controls the loading forces on contacts of an integrated circuit socket. A heat sink having a base includes a pedestal extending from the base that abuts the integrated circuit for purposes of heat removal. Springs are employed to provide loading forces for the heat sink that are lower than the loading forces for the integrated circuit socket contacts. yl, pyrrolyl, oxazolyl, thiazolyl, imidazolyl, isoxazolyl, isothiazolyl, oxadiazolyl, triazolyl, tetrazolyl, thiadiazolyl, pyridinyl, pyridazinyl, pyrimidinyl, pyrazinyl, indolyl, isoindolyl, benzofuranyl, benzothienyl, benzimidazolyl, benzthiazolyl, benzoxazolyl, purinyl, quinolinyl, isoquinolinyl, quinazolinyl, quinoxalinyl, carbazolyl, phenothiazinyl and phenoxazinyl, halogen, hydroxy, oxo, carboxy, cyano, nitro, amidino and guanidino; R his selected from the group consisting of C1-8 alkyl, aryl, C1-8 alkoxycarbonyl, aryloxycarbonyl, arylC1-8alkoxycarbonyl, carbamoyl wherein the nitrogen atom is unsubstituted or mono or di-substituted by C1-8 alkyl, C3-7 cycloalkyl, aryl, arylC1-8alkyl, heterocyclyl selected from the group consisting of pyrrolidinyl, piperidinyl, morpholinyl, thiomorpholinyl, piperazinyl and indolinyl, or heteroaryl selected from the group consisting of furanyl, thienyl, pyrrolyl, oxazolyl, thiazolyl, imidazolyl, isoxazolyl, isothiazolyl, oxadiazolyl, triazolyl, tetrazolyl, thiadiazolyl, pyridinyl, pyridazinyl, pyrimidinyl, pyrazinyl, indolyl, isoindolyl, benzofuranyl, benzothienyl, benzimidazolyl, benzthiazolyl, benzoxazolyl, purinyl, quinolinyl, isoquinolinyl, quinazolinyl, quinoxalinyl, carbazolyl, phenothiazinyl and phenoxazinyl, halogen, hydroxy, carboxy and cyano.3. The compound according to claim 2 wherein: Y is O or S; R 2is H or C1-3 alkyl; R 3is H, C1-5 alkyl, C3-7 cycloalkyl or aryl, wherein R3is unsubstituted or substituted by one or more Rd; R dis selected from the group consisting of C1-5 alkyl, C3-7 cycloalkyl, aryl, heterocyclyl selected from the group consisting of pyrrolidinyl, piperidinyl, morpholinyl, thiomorpholinyl, piperazinyl and indolinyl; heteroaryl selected from the group consisting of furanyl, thienyl, pyrrolyl, oxazolyl, thiazolyl, imidazolyl, triazolyl, tetrazolyl, pyridinyl, pyrimidinyl, pyrazinyl, indolyl, benzofuranyl, benzothienyl, benzimidazolyl, benzthiazolyl, benzoxazolyl, quinolinyl, isoquinolinyl, quinazolinyl and quinoxalinyl, C1-5 alkoxy, aryloxy, C1-5alkanoyl, aroyl, C1-5 alkoxycarbonyl, aryloxycarbonyl, C1-5 alkanoyloxy, aroyloxy, carbamoyl wherein the nitrogen atom is unsubstituted or independently mono or di-substituted by C1-5 alkyl, aryl, heterocyclyl selected from the group consisting of pyrrolidinyl, piperidinyl, morpholinyl, thiomorpholinyl, piperazinyl and indolinyl or heteroaryl selected from the group consisting of furanyl, thienyl, pyrrolyl, oxazolyl, thiazolyl, imidazolyl, triazolyl, tetrazolyl, pyridinyl, pyrimidinyl, pyrazinyl, indolyl, benzofuranyl, benzothienyl, benzimidazolyl, benzthiazolyl, benzoxazolyl, quinolinyl, isoquinolinyl, quinazolinyl and quinoxalinyl, C1-5 alkanoylamino, aroylamino, C1-5 alkylthio wherein the sulfur atom is unoxidized or oxidized to a sulfoxide or sulfone, arylthio wherein the sulfur atom is unoxidized or oxidized to a sulfoxide or sulfone, ureido wherein either nitrogen atom is unsubstituted or independently substituted by C1-5 alkyl, aryl, heterocyclyl selected from the group consisting of pyrrolidinyl, piperidinyl, morpholinyl, thiomorpholinyl, piperazinyl and indolinyl or heteroaryl selected the group consisting of furanyl, thienyl, pyrrolyl, oxazolyl, thiazolyl, imidazolyl, triazolyl, tetrazolyl, pyridinyl, pyrimidinyl, pyrazinyl, indolyl, benzofuranyl,