The sound is transcribed in the International Phonetic Alphabet with ⟨t͡ʃ ⟩, ⟨t͜ʃ ⟩ ⟨tʃ ⟩ (formerly the ligature ⟨ʧ ⟩), or, in broad transcription, ⟨c⟩.

This affricate has a dedicated symbol U+02A7 ʧ LATIN SMALL LETTER TESH DIGRAPH, which has been retired by the International Phonetic Association but is still used.

Features of the voiceless domed postalveolar affricate: Pronunciation is region dependent.

Mandarin Chinese, Russian, Japanese, Korean, Mongolian, Polish, Catalan, and Thai have a voiceless alveolo-palatal affricate /t͡ɕ/; this is technically postalveolar but it is less precise to use /t͡ʃ/.

There are several Unicode characters based on the tesh digraph (ʧ): Symbols to the right in a cell are voiced, to the left are voiceless.