▎ 摘　　要

NOVELTY - The system (12) has a slide-on stiffener (26) that wraps around an edge of the substrate. A first electrical connector (14) is positioned on the substrate. The first electrical connector includes an electrically dielectric housing, and graphene, nanomaterial, or both graphene and nanomaterial. The graphene, the nanomaterial, or both the graphene and the nanomaterial are positioned asymmetrically about each of the X-, Y-, and Z-axes of the electrically dielectric housing, on the slide-on stiffener, or both the electrically dielectric housing and the slide-on stiffener. USE - Electrical system for slide-on substrate stiffener and inductor (all claimed), for improving unwanted mechanical, thermal, and electro-magnetic interference (EMI) issues in electronic systems. ADVANTAGE - The slide-on substrate stiffeners help to prevent or minimize bowing of a substrate that carries an electrical connector, an optical connector, module, coupler, a chip or die, etc. The electrical connector through hole or wave solder hold downs/board locks can be SMT mounted to the substrate to help mitigate the mechanical stresses. The heat-dissipation material can be added to electrically conductive or electrically non-conductive electrical interconnect portions. Clips with two or more points of physical or electrical contact can be attached to power-conductor mating ends with only one point of physical contact, helping to reduce contact resistance. Removal or reduction of unwanted EMI from an inductor is also disclosed. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a slide-on substrate stiffener; (2) a method of manufacturing a surface-mount hold down; (3) an electrical connector; (4) a heat-producing article; and (5) a method of making a stronger solder connection. DESCRIPTION OF DRAWING(S) - The drawing shows a side view of the system that has mating mezzanine electrical connectors, parallel first and second host substrates, and a pair of slide-on substrate stiffeners. Electrical system (12) Connector (14) First host substrate (16) Mateable mezzanine connector (18) Slide-on stiffener (26)