Unlike surface mount components, which require a printed circuit board (PCB), the addition of lead wires in axial and radial leaded capacitors allows for greater mounting versatility. Surface mount devices are limited to both solder and gluing (conductive adhesive) mounting techniques. Capacitors with wire lead termination systems can be used in locations where a PCB is not required or in harsh environmental applications that will promote PCB failure. In addition to both solder and gluing techniques, leaded capacitors can be crimped or welded into a circuit. As an effective noise suppression solution on electric brush motor assemblies and power distribution bars (bus bar), leaded capacitors are typically welded or crimped nearest to the noise source. It is important to note that wire lead core material and finish should be considered when deciding on a mounting option. For example, resistance welding typically requires a more resistive core lead material such as steel or nickel.