摘要:
The present invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein A is hydrogen, C1-4alkyl, C3-6cycloalkyl, C1-3alkoxy, C1-3alkoxy C1-4alkyl, C1-2fluoroalkyl, halogen, NR6R7, optionally substituted heteroaryl (Het), or optionally substituted phenyl, and R1, R2, R3, R4, R5, R6 and R7 are as defined in the description. The compounds or salts are thought to modulate P2X7 receptor function and to be capable of antagonizing the effects of ATP at the P2X7 receptor. The invention also provides the use of the compound or salt in the treatment or prophylaxis of, for example, inflammatory pain, neuropathic pain, visceral pain, rheumatoid arthritis or osteoarthritis or neurodegenerative disorders.
摘要:
A substrate having upper and lower surfaces, the upper surface including a periphery defined by first and second spaced apart side edges and front and rear spaced apart edges; a power semiconductor die disposed on the upper surface of the substrate, the die including a top surface on which at least a first metalized surface is disposed and a bottom surface; a plurality of conductive pads disposed only at the second side edge of the substrate; and a plurality of wire bonds extending from the first metalized surface to the plurality of conductive pads.
摘要:
A semiconductor package includes a bottom leadframe having a bottom plate portion and at least one first terminal extending from the bottom plate portion; at least one second terminal being co-planar with the first terminal; a semiconductor power MOSFET die having a bottom surface defining a drain connection and a top surface on which a first metalized region defining a source and a second metalized region defining a gate are disposed, the bottom surface being coupled to the bottom plate of the leadframe such that the first terminal is electrically connected to the drain; a copper plate coupled to and spanning a substantial part of the first metalized region defining the source connection, the copper plate including at least one chamfered edge extending upward and away from the first metalized region; and at least one beam portion being sized and shaped to couple the copper plate portion to the at least one second terminal such that it is electrically coupled to the source.
摘要:
A solderable back contact for semiconductor die consists of a titanium layer bonded to the bottom of the die. The free surface of the titanium layer is coated with a copper layer. A soft solder layer joins the bottom of the die to a copper lead frame by first heating the die to below the melting point of the solder, and then ultrasonically “scrubbing” the solder to cause it to bond to the die and lead frame with a minimum sized solder fillet.
摘要:
According to an exemplary embodiment, a small-outline package includes a power transistor having a source and a drain, the power transistor situated on a paddle of a leadframe of the small-outline package. The source of the power transistor is electrically connected to a plurality of source leads. The drain of the power transistor is electrically and thermally connected to a top side of the paddle of the leadframe, the paddle of the leadframe being exposed from a bottom surface of the small-outline package, thereby providing a direct electrical contact to the drain from a bottom side of the paddle of the leadframe.
摘要:
A substrate having upper and lower surfaces, the upper surface including a periphery defined by first and second spaced apart side edges and front and rear spaced apart edges; a power semiconductor die disposed on the upper surface of the substrate, the die including a top surface on which at least a first metalized surface is disposed and a bottom surface; a plurality of conductive pads disposed only at the second side edge of the substrate; and a plurality of wire bonds extending from the first metalized surface to the plurality of conductive pads.
摘要:
A portable radio-cassette adapter plate which is secured to a portable radio. An offset belt clip is secured to the portable radio-cassette adapter plate by an offset belt clip tether which is adjustable in length. By clamping the offset belt clip to a waistband or belt of a user, the portable radio is suspended comfortably by the offset belt clip tether. The distance which the portable radio is suspended below the waistband or belt of the user may be varied for comfort according to personal preference.
摘要:
The present invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein A is hydrogen, C1-4alkyl, C3-6cycloalkyl, C1-3alkoxy, C1-3alkoxy C1-4alkyl, C1-2fluoroalkyl, halogen, NR6R7, optionally substituted heteroaryl, or optionally substituted phenyl, and R1, R2, R3, R4, R5, R6 and R7 are as defined in the description.The compounds or salts are thought to modulate P2X7 receptor function and to be capable of antagonizing the effects of ATP at the P2X7 receptor. The invention also provides the use of the compound or salt in the treatment or prophylaxis of, for example, inflammatory pain, neuropathic pain, visceral pain, rheumatoid arthritis or osteoarthritis or neurodegenerative disorders.
摘要:
The invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein: A is C1-6alkyl, C3-6cycloalkyl, —CH2—R6, —CHMe-R7, —CMe2-R7, or optionally substituted aryl; wherein, when A is optionally substituted aryl, said aryl group is optionally substituted with 1 to 3 substituents, which may be the same or different, selected from the group consisting of halogen, C1-6alkyl, —CF3, C1-4alkoxy, C1fluoroalkoxy, cyano, NR8R9, and pyridyl wherein the pyridyl is optionally substituted by one methyl; R1 is chlorine, fluorine, —CF3, cyano or C1-6alkyl; R2, R3 and R5 independently are hydrogen, fluorine, chlorine, —CF3, cyano or C1-6alkyl, such that at least one of R2, R3 and R5 is other than hydrogen; R4 is hydrogen. These compounds and salts are thought to be P2X7 receptor antagonists. The invention also provides for the treatment of pain, inflammation, rheumatoid arthritis, osteoarthritis, or a neurodegenerative disease.