Title:
低α線錫合金の製造方法
Document Type and Number:
Japanese Patent JP4242662
Kind Code:
B2
Abstract:
To provide a method of simply and inexpensively producing a tin alloy reduced in the amount of α rays and suitable to a soldering material for electronic components or the like.
In the method of producing a low α ray tin alloy, a composition containing tin powder including lead as impurities and the salt or complex of metal having an ionization tendency lower than that of lead such as silver and copper is heated, so that a low α ray tin alloy is precipitated. When the tin alloy obtained thereby is applied to a soldering material, errors of memory in a semiconductor or the like are suppressed, and the reliability of an electronic component can be improved.
COPYRIGHT: (C)2004,JPO&NCIPI
Inventors:
Kazuki Ikeda
Kumamoto Seishi
Hisae Irie
Keigo Obata
Takao Takeuchi
Kumamoto Seishi
Hisae Irie
Keigo Obata
Takao Takeuchi
Application Number:
JP2003038661A
Publication Date:
March 25, 2009
Filing Date:
February 17, 2003
Export Citation:
Assignee:
Harima Chemicals Co., Ltd.
Daiwa Chemical Research Institute Co., Ltd.
Daiwa Chemical Research Institute Co., Ltd.
International Classes:
B23K35/26; C22B25/08; B23K35/40; C22B3/46; C22C13/00; H05K3/34
Domestic Patent References:
| JP11080852A | ||||
| JP1283398A | ||||
| JP2000084693A | ||||
| JP9143585A | ||||
| JP2001121284A |
Attorney, Agent or Firm:
Toshikazu Fukai