摘要:
An optical module comprises an optical connector at the receiver side and an optical connector at the transmitter side, and hybrid IC for the receiver side and the transmitter side are mounted on a lead frame. The lead frame comprises a projecting part projecting outside from a part where each semiconductor chip is mounted. Nearby the connection part between the optical connector and the hybrid IC, the projecting part is connected to a ground pattern on a surface of the hybrid IC by a bonding wire. The wire is placed at this location, so that the effect of noise caused by an atmospheric electric wave, or GND/power lines can be reduced.
摘要:
The present invention provides a liquid resin composition for electronic components, which is excellent in migration resistance and also superior in formability and reliability, as well as an electronic component device sealed therewith, and relates to a liquid resin composition for electronic components, which comprises (A) an epoxy resin, (B) a cyclic acid anhydride which is liquid at ordinary temperature and has an acid anhydride equivalent of 200 or more, and (C) a coupling agent.
摘要:
It is an object of the present invention to provide an optical module having a structure in which alignment precision of sleeves to be accommodated to a housing can be improved with a simple operation. The optical module according to the present invention is characterized by providing special structures for defining the positions of the sleeves to a sleeve holder for holding the sleeves, and the housing having a cavity for accommodating the sleeves. In particular, the housing includes support portions each having a reference surface for defining the fixing position of the corresponding sleeve. The sleeve holder includes spring pieces each for urging the sleeve to the reference surface.
摘要:
The present invention provides a liquid resin composition for electronic components, which is excellent in migration resistance and also superior in formability and reliability, as well as an electronic component device sealed therewith, and relates to a liquid resin composition for electronic components, which comprises (A) an epoxy resin, (B) a cyclic acid anhydride which is liquid at ordinary temperature and has an acid anhydride equivalent of 200 or more, and (C) a coupling agent.
摘要:
A macro-azo initiator obtained by reacting a compound (A) having an azo group in the molecule and having a reactive functional group at each end of the molecule with a compound (B) having an azo group in the molecule and having at each end of the molecule a functional group reactive with the reactive functional groups of the compound (A), is effective for a polymerization process of one or more vinyl monomers and a production process of a block polymer.
摘要:
A method of issuing cards by using a card issuing machine including a memory having stored therein an initial secret code, a card reader and a keyboard. Checking whether a secret code keyed in matches the initial secret code stored in the memory; storing in a memory a code keyed in for associating a first card with the card issuing machine and recording the associating keyed-in code in the first card by the card reader to issue the first card when the two secret codes are found to match; issuing a new card upon confirming a keyed-in first secret code of the first card; and issuing another new card upon confirming a secret code on the new card issued.