Translation guide
The English word 'solder' can refer to the material used for joining metals, or the action of joining with solder. This guide covers both meanings and provides natural Japanese equivalents.
Referring to the fusible metal alloy used to join metal parts.
The standard word for solder as a material. Used in electronics, plumbing, and metalwork.
はんだが足りない。
We're out of solder.
このはんだは鉛フリーです。
This solder is lead-free.
Kanji form of はんだ. Often used in technical contexts or product labels.
半田ごてを使う。
Use a soldering iron.
The act of joining metals using solder.
The most common way to say 'to solder'. Literally 'to attach solder'. Used for both manual and industrial soldering.
この部品をはんだ付けしてください。
Please solder this component.
彼は基板にはんだ付けするのが上手だ。
He is good at soldering circuit boards.
A slightly more explicit version meaning 'to attach with solder'. Less common than はんだ付けする but still natural.
ワイヤーを端子にはんだで付ける。
Solder the wire to the terminal.
Technically 'brazing', which uses a higher-temperature filler metal. Sometimes used loosely for soldering, but strictly different. Use only when the distinction matters.
銅管をろう付けする。
Brazing copper pipes.
The loanword ソルダー exists but is rare and mostly used in brand names or very specific technical jargon. Stick with はんだ for natural Japanese.
The tool is called はんだごて (soldering iron). The verb はんだ付けする implies using this tool unless specified otherwise.
はんだごてを温める。
Heat up the soldering iron.