(Reuters) - German semiconductor materials supplier Siltronic reported a 1.7% jump in third-quarter sales on Thursday, due to an increase in wafer area sold.

The company, which makes silicon wafers used in semiconductor chips, posted revenue of 357.3 million euros ($385.6 million) for the quarter, compared with 349.1 million euros a year earlier, exceeding analysts' forecast of 342.5 million euros according to LSEG.

($1 = 0.9266 euros)

(Reporting by Ozan Ergenay in Gdansk)