Soldering other precipitation may wash the lead into the groundwater. Unfortunately, most lead-free solders are not eutectic formulations, melting at around , making it more difficult to create reliable joints with them. Other common solders include low-temperature formulations (often containing bismuth), which are often used to join previously-soldered assemblies without unsoldering earlier connections, and high-temperature formulations (usually containing silver) which are used for high-temperature operation or for first assembly of items which must not become unsoldered during subsequent operations. Alloying silver with other metals changes the melting point, adhesion and wetting characteristics, and tensile strength. Of all the brazing alloys, silver
Electrical connector other connectors such as Banana connectors. A connector that locks a metal spade to a terminal by screwing them together. Crimp connectors can be used for fast and friction-type connections in DC applications where connections are broken repeatedly. Alligator connectors are often used as temporary test leads. A screw terminal is a type of electrical connector where a wire is held by the tightening of a screw. Phone connectors can be used as connectors in microphone cables and for low-voltage, low-current applications. Pogo Pin Connectors or Spring Loaded Connectors is a connector type commonly used in consumer products. The Connector