摘要:
A contact pin assembly for a socket for electrical parts comprises a plurality of contact pins provided for a socket body of a socket for electrical parts and a connection member, formed separately, connecting all the contact pins with a predetermined distance between adjacent ones. The predetermined distance is made substantially equal to a distance between adjacent ones of terminals provided for an electrical part which is held in the socket body.
摘要:
An IC socket with good durability that permits electrical tests on IC to be performed accurately over a long period of time is provided. An elastically deformable metal plate 12 is fixed within a spring accommodating portion 9 of a support board 2. The metal plate 12 is such that a plurality of spiral cantilevers 19 are formed so as to correspond to bumps 21 of the IC 10, and the flat tip 19a of the spiral cantilever supports an insulative resin film 3. When the IC 10 is pressed by an IC pressing part 54 and the bump 21 of the IC 10 flexibly deforms the spring part S via the insulative resin film 3, a contact pressure due to the elastic force of the spring part S occurs in the contact area between the bump 21 and contact pad 11.
摘要:
An improved diamond sintered body having an excellent breakage resistance, corrosion resistance, heat resistance and wear resistance and capable of being sintered at a relatively low pressure and low temperature can be provided. The feature thereof consists in a diamond sintered body comprising 50 to 99.9 volume % of diamond and the balance of a binder phase consisting of a single or mixed phase of a compound (C) or composite (C') of at least one element (A) selected from the group consisting of rare earth elements, Group 3B, 4A, 4B and 6B elements of Periodic Table, iron group, Mn, V, alkali metals and alkaline earth metals with a phosphorus compound (B), or of the above described compound (C) or composite (C') with an oxide of (A).
摘要:
The present invention provides a diamond sintered compact having a higher strength as well as more excellent heat resistance, breakage resistance and corrosion resistance, as compared with those of the prior art, which thus can effectively be applied to tool materials for cutting or polishing of non-ferrous metals or ceramics, and edge materials of drill bits for excavating petroleum. The feature of the diamond sintered compact contains 0.1 to 30 volume % of at least one compound containing at least one element selected from the group consisting of silicon and titanium, and oxygen and the balance of diamond, for example, a titanate of a metal selected from the group consisting of iron, cobalt, nickel and manganese.
摘要:
A synthetic diamond heat sink which can be easily shaped and which ensures a consistently high thermal conductivity in which the diamond is a Type Ib diamond containing 50 to 100 ppm nitrogen. The synthetic diamond crystal has a shape similar to the crystal structure of a hexahedron synthesized by heating a carbon source, a solvent and a diamond seed crystal and the stability region of diamond at a high pressure. The resulting temperature gradient between the carbon source and seed crystal is adjusted to cause diamond growth on the seed crystal. The solvent employed is selected from the group of cobalt, nickel, iron, chromium and manganese. The diamond crystal is caused to grow as the temperature of the solvent is gradually decreased at a rate of 0.15 to 10.degree. C. per hour so that the temperature of the seed crystal and growning diamond crystal is within a range the lower limit of which is a temperature 20.degree. C. higher than the melting point of the solvent and carbon source system and the upper limit of which is a temperature 40.degree. C. higher than the lower limit.