BERLIN: German semiconductor maker Infineon’s planned takeover of American firm Wolfspeed will not go ahead, the US company’s owner Cree announced, due to “national security concerns” from Washington authorities. “Cree and Infineon have been unable to identify alternatives which would address the national security concerns of the Committee on Foreign Investment in the United States (CFIUS),” Cree said in a statement late Thursday. Infineon had hoped to buttress its business in radio frequency and power solutions with the Wolfspeed acquisition, as the semiconductor sector goes through a bout of consolidation. But prospects that the tie-up would come to fruition receded after the CFIUS made its opposition known earlier in February. The committee found that the $850 million (800 million euros) proposed takeover announced last July presented a national security risk. It did not propose a way for the deal to go ahead while satisfying its concerns. The CFIUS last appeared in German headlines in December, when it blocked the takeover of chip maker Aixtron by China’s Grand Chip Investment.