noun
Refers to a fusible metal alloy used for joining metal parts; also used historically for pewter. In modern contexts, almost always means solder.
電子工作では、はんだを使って部品を基板に付けます。
In electronics work, you use solder to attach components to the board.
この配線ははんだが取れている。
The solder has come off this wiring.
Rarely used kanji form.
The word はんだ is believed to derive from the Portuguese 'solda' (solder), which entered Japanese during the period of Portuguese trade. The kanji 半田 are ateji (phonetic equivalents) and do not contribute to the meaning.