RF Inductors Sunnycoil leads the industry in the design and manufacture of wire-wound RF and microwave frequency inductors for commercial, industrial, automotive, military, and space environments. Wirewound construction achieves extremely high Q for high efficiency in high-frequency RF impedance matching and antenna matching circuits. Broadband RF chokes provide wideband filtering for eliminating EMI over a wide frequency range. Applications include cell phones, portable electronics, RFID, RF transceivers, and broadband wireless. Power Inductors Sunnycoil leading power inductor technology meets the demand for high switching frequencies and small overall solution size in shielded composite core and traditional ferrite core constructions. Our compact SMD power inductors achieve maximum energy storage and eliminate EMI in power supplies for automotive, industrial, and commercial electronics. Transformers Our power transformers are optimized for Flyback, Flybuck™, no-Opto, forward-mode, active-clamp-forward, push-pull, resonant mode, and full- / half-bridge configurations. Off-the-shelf SMD and TH mount transformers for PoE, current sensing, ultrasonic sensing, isolation, capacitor charging, and gate drive or pulse transformer applications. Power converter transformers for DC-DC and AC-DC voltage conversion in industrial, automotive, and high-reliability environments. Our miniature wideband RF transformers achieve tight coupling and come in a wide range of impedance ratios for low power (1/4 W) signal applications requiring up to 500 V isolation. Wirewound SM and TH mount versions are available for impedance matching, DC current injection, balun, unable, unun, single-ended, balanced, differential transmission line, and DC isolation. EMI Chokes/Wirewound Ferrite Beads Our power line and data line common mode chokes and wire-wound ferrite beads cancel EMI for high-frequency electronic noise suppression. Off-the-shelf CM and DM filters in SM and TH mount prevent interference in power supplies and data lines as industrial and automotive grade noise filters for USB, CAN bus, PoC, ADAS, xEV, and Class D audio amplifiers. These chokes will help to meet electromagnetic compatibility (EMC) standards such as FCC Title 47 CFR Part 15 and CISPR.