U
u-blox (245)
UMW (113)
UMW(Youtai Semiconductor Co., Ltd.) (4)
UNI-SEMIC (3)
Unilc (3)
Union Semiconductor (HK) Limited (80)
Union Semiconductor International Limite.. (6)
United Chemi-Con (1)
UnitedSiC (72)
Unitrode (279)
uPI Semiconductor (7)
US Custom Billet (2)
US Electronics Inc. (18)
UTC(Unisonic Tech) (25)
UTD Semiconductor (17)