A quality SMT produced ESC with reliable components.
The Turnigy AE series are based on new powerful microprocessor.
The new CPU means ultra fast sync timing, crisper throttle response, less battery load and reduced FET heat buildup. Also there is a separate voltage regulator IC for microprocessor providing good anti-jamming capability. 

Specification:
Output:  Continuous 45A, burst 50A up to 10 seconds.
Input Voltage:  2-6 cells lithium battery or 5-18 cells NIMH battery.  
BEC:  Linear 4A @ 5-6V
Control Signal Transmission: Optically coupled system.
Max Speed:    
   2 Pole: 210,000rpm
   6 Pole: 70,000rpm
   12 Pole: 35,000rpm
Size:  60mm (L) * 26mm (W) * 11mm (H).
Weight:  43g.
 
Features:
High performance microprocessor brings out the best compatibility with all kinds of motors and the highest driving efficiency.
Wide-open heatsink design to get the best heat dissipation effect.
Improved Normal, Soft, Very-Soft start modes, compatible with aircraft and helicopter.
Smooth, linear, quick and precise throttle response.
Multiple protection features: Low-voltage cut-off protection / Over-heat protection / Throttle signal loss protection
Programable via transmitter
With governor mode for helicopter

Programming features:
Brake setting (we recommend using brake for only folding props applications)
Battery type(Li-xx or Ni-xx)
Low voltage cutoff setting
Factory default setup restore
Timing settings (to enhance ESC efficiency and smoothness)
Soft acceleration start ups (for delicate gearbox applications)
Low voltage cutoff type (power reduction orirnmediate shutdown)
 
Factory default settings:
Brake:  off
Battery type:  Li-xx (Li-ion or Li-Po)
Low voltage cutoff threshold:  Soft cut-off (2.6V)
Timing setup:  Low
Soft Acceleration Start Up:  Normal 
Low voltage cutoff type:  Medium