Preforms containing gold are typically used for hermetic packaging applications. They also offer a couple of succinct advantages. Gold alloys are resistant to corrosion and they offer a wide range of melting temperatures.
Array Solders offers preforms in the following gold alloys:
80au/20sn: Eutectic melting point – 280°C (80% gold, 20% tin)
88au/12ge: Eutectic melting point – 356°C (88% gold, 12% germanium)
80au/20cu: Eutectic melting point – 891°C (80% gold, 20% copper)
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