What resistance tolerance is recommended for SiC series and parallel connection?

For SiC elements in series connection, match resistance within +/-5%. For parallel connection, the recommended range is +/-10%.

Parallel connection is generally preferred because small resistance differences tend to balance during use. If series connection is required, no more than 4 elements should be connected in series when values are well matched, and above 1400℃ the recommended series limit is 2 elements.