All IXYS 177 Littelfuse 152 Vishay Semiconductors 87 WeEn Semiconductors 85 STMicroelectronics 61 Central Semiconductor 41 Shindengen 16 Infineon Technologies 13 Renesas Electronics 10 Taiwan Semiconductor 7 Bourns 5 Kyocera Electronic Components 2 Microchip / Microsemi 1