Addressing the compact size requirements of advanced radio frequency communications equipment, a new line of miniature rf transformers operates over wide frequency bandwidths while maintaining a flat frequency response. The CX2039, CX2040, and CX2047 surface mount transformers can be used to match impedances, step up/step-down voltages, create dc isolation, and convert circuits from balanced to single ended. They operate from 500 kHz to 1.5 GHz and are available with 1:1 and 1:4 impedance ratios. Each device has a footprint of just 15" x .15" and can be ordered with or without centertaps. Available in trays or tape-and-reel, the transformers are priced beginning at $0.99 each/10,000.