Credo ci siano anche qui.
qui ho trovato ottimi prodotti, precisi e non onerosi (soprattutto spedizione):
Dimension Engineering - R/C, Power Electronics, Sensors
ad es:
Dimension Engineering's Very High Voltage BEC is the world's first BEC compatible with input voltages as high as 60V/14s lithium. It can power your receiver and servos with up to 2.5A. VHVBEC is especially well suited for high voltage helicopters running 4 high speed/torque digital servos.