Patent ID: 6011222
Filing Date: 2000-01-04
Classification: H01R

Abstract:
A substrate for mounting an electronic part comprising an insulating substrate provided with a conductive circuit, a through hole formed in said insulating substrate and a conductive pin having a leg and a head inserted into said through hole, wherein:said head of said conductive pin is provided with a plurality of projections at its side wall each projecting radially in 4 or more directions;said projections form a plurality of projection pairs, each projection of which is extending in an opposite direction from an axial center of said head;said projection pairs include a primary projection pair having the largest length and a secondary projection pair having the next largest length; said length of said primary projection pair is equal to or more than an inside diameter of said through hole; and said length of said secondary projection pair is less than said inside diameter of said through hole; andwherein a difference of length between said primary projection pair and said secondary projection pair ranges from 10 to 70 .mu.m.