US 2010/0163277 A1 · TERMINAL FOR ENGAGING TYPE CONNECTOR

Abstract

A terminal for an engaging type connector includes a punched Cu alloy strip as a base material, a coating formed on the Cu alloy strip by postplating processes and including a Sn layer, and a Cu—Sn alloy layer sandwiched between the base material and the Sn layer. The Sn layer is smoothed by a reflowing process. The terminal has an engaging part and a solder-bonding part, and the surface of a part of the base material corresponding to the engaging part has a surface roughness higher than that of the surface of the base material corresponding to the solder-bonding part. The engaging part has a low frictional property and the solder-bonding part has improved solder wettability.

Claims10

Dependent claims

A terminal for an engaging type connector comprising:

a punched Cu alloy strip serving as a base material and having an arithmetic mean roughness Ra of 0.15 μm or above with respect to one direction and an arithmetic mean roughness Ra of 4.0 μm or below with respect to all directions;
and
a coating formed on the base material by postplating processes and including a Cu—Sn alloy layer and a Sn layer;
wherein the Cu—Sn alloy layer is sandwiched between the base material and the Sn layer, the Sn layer is smoothed by a reflowing process, the terminal has an engaging part and a solder-bonding part, and a part of the Sn layer on the solder-bonding part has a mean thickness greater than that of a part of the Sn layer on the engaging part.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

12/721,259Filed 10 Mar 2010

Priority

JP 2007-11239920 Apr 2007

Published

1 Jul 2010

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

C23C 26/02
Coating not provided for in groups C23C2/00 - C23C24/00: applying molten material to the substrate
C23C 28/021
Only coatings only including layers of metallic material: including at least one metal alloy layer
C23C 28/023
Only coatings only including layers of metallic material: only coatings of metal elements only
C25D 5/12
Electroplating with more than one layer of the same or of different metals: at least one layer being of nickel or chromium

Terminal for engaging type connector

Life of this patent

Terminal for engaging type connector

Life of this patent

Abstract

Claims10