摘要:
A burn-in testing method to perform tests with a semiconductor device operated in an atmosphere at a prescribed temperature characterized in that operation instruction signals instructing an operation of the semiconductor device are repeatedly supplied while supplying power to the semiconductor device, and increases and decreases in a power supply current corresponding to the operation instruction signals are counted.
摘要:
A burn-in testing method to perform tests with a semiconductor device operated in an atmosphere at a prescribed temperature characterized in that operation instruction signals instructing an operation of the semiconductor device are repeatedly supplied while supplying power to the semiconductor device, and increases and decreases in a power supply current corresponding to the operation instruction signals are counted.
摘要:
An attachment structure between a semiconductor device socket and a test circuit substrate is provided. The semiconductor device socket includes a socket body and a contact film disposed therein. Extension conductive wires extended from a contact portion to be connected to a semiconductor device are formed on the contact film. The contact film is also provided with socket connectors connected to the extension conductive wires. The test circuit substrate is provided with circuit substrate connectors corresponding to the socket connectors. The socket connectors and the circuit substrate connectors are in a male-female connector relationship.
摘要:
An IC carrier for electric testing of an IC package enables an IC package to be loaded on or unloaded from it smoothly without bending any of closely arranged fine leads, and prevents the leads from being deformed by falling impact when it is dropped. The IC carrier for an IC package, having an array of leads, comprises an array of sockets for mating with the array of leads, wherein selected one of the sockets differs in clearance between a width of each of the sockets and a width of each of the leads to be mated from the other ones in a cross section of an array. For instance, an array of sockets having holes to mate with leads having a single diameter of an IC package are arranged so that inner diameters of the holes in an outer part of the array is larger than those in a central part of the array. The technique is applicable to both a flat IC package (QFP or SOP) and a pin grid array IC package (PGA).
摘要:
A contact terminal formed of an electrically conductive material is arranged in each of a plurality of holed of a contactor substrate. An electrically conductive part is formed on an inner surface of each hole. The contact terminal has a first contact part that contacts a terminal of an electronic part and a second contact part that contacts the electrically conductive part in a middle portion. When the contact terminal bends by the first contact part being pressed, the second contact part contacts the electrically conductive part of the contactor substrate and an appropriate degree of contact pressure is obtained.
摘要:
The present invention provides a high-quality semiconductor integrated circuit device, where the semiconductor integrated circuit device, a SiP or especially PoP semiconductor integrated circuit device, enables a simultaneous testing of the reliability of multiple upper and lower semiconductor integrated circuit elements; it also enables a testing of only the non-defective element in case the other is determined defective; moreover, only the defective unit is exchangeable with a non-defective unit. The semiconductor integrated circuit device of the present invention contains multiple semiconductor integrated circuit elements, e.g. semiconductor integrated circuit devices 14 and 16, and a circuit board 12 which relays the respective semiconductor integrated circuit elements 14 and 16, and at least a part of the circuit board 12, e.g. test pads 13, can be electrically connected to an external test apparatus when the semiconductor integrated circuit devices 14 and 16 are electrically connected to the circuit board 12.
摘要:
The barrel temperature control apparatus for an injection molding machine can execute the barrel temperature control in such a way as to optimize the disturbance suppression characteristics. The temperature control section 7 comprises the manipulated variable addition and subtraction section 14 at the rear stage of the PiD control section 12 in such a way that the barrel temperature of the injection molding machine 1 can be controlled under both feedback and feed-forward. Further, when the same products are molded continuously, the barrel temperature is feed-forward controlled on the basis of the learned change manipulated variable.
摘要:
A cosmetic composition comprising a long-chain alkyltrimethylol is disclosed. The alkyltrimethylol is represeneted by the formula (I): ##STR1## wherein R is a linear or branched, saturated or unsaturated alkyl group having 8-22 carbon atoms. The composition is applied to various types of cosmetic and exhibits superior extendibility when applied, imparts a non-sticky, fresh feeling upon use, and provides an excellent moisture-retaining effect.