Product overview
The Maytech MT20A-BEC-HE is a Harrier-Eco Series electronic speed controller for RC airplanes and helicopters, including sport flying, 3D flying, aggressive aerobatics and racing aircraft. Its stated applications also include drones, remotely operated underwater vehicles, subsea robots and cable-camera systems for broadcast use. It specifies 20A continuous current, 25A burst current and operation with a 2–3-cell LiPo battery. The controller measures 51 × 25 × 9mm and weighs 20g net. Listed pack configurations contain 20 or 50 controllers; the product is marked sold out, with both pack variants marked sold out or unavailable.
Programming is supported through Trx or an optional Maytech programming card. Motor rotation direction can be changed by exchanging two of the three ESC wires or adjusting the programming-card settings. A separate voltage-regulator IC serves the microcontroller, and protection functions cover low voltage, blocked rotation and signal loss. Safe startup prevents the motor from starting when the battery is connected, regardless of throttle-stick position. The BEC carries conflicting voltage designations of 5V and 5.5V, both paired with 2A, leaving its output voltage uncertain.
Specifications
| Specification | Value & conditions |
|---|---|
| Model | MT20A-BEC-HE |
| Series | Maytech Harrier-Eco Series |
| Applications | Airplanes, RC airplanes, 3D flying, RC hobby applications, sport flying, aggressive aerobatics, helicopters, racing airplanes, remotely operated vehicles, underwater robots, underwater robotics, subsea robots, cable cameras, broadcast applications and drones. |
| Continuous current | 20AContinuous current. |
| Burst current | 25ABurst current. |
| BEC specification | 5.5V/2A |
| BEC designation in product title | 5V/2A; differs from the 5.5V/2A BEC specification. |
| Battery cell count | 2–3 cellsLiPo battery. |
| Weight | 20gNet weight. |
| Dimensions | 51 × 25 × 9mm |
| Pack configurations | 20-piece or 50-piece packs of speed controllers. |
| Control characteristics | Startup and low-speed performance, throttle linearity and quick throttle response are stated features. |
| MCU voltage regulation | Separate voltage-regulator IC for the microcontroller, with interference resistance. |
| Protection functions | Low-voltage, blocked-rotation and signal-loss protection. |
| Programming | Programmable by Trx or an optional Maytech programming card.Maytech programming card is optional. |
| Safe startup | Motor startup is prevented when the battery is connected, regardless of throttle-stick position.Battery connection, regardless of throttle-stick position. |
| Motor direction adjustment | Motor rotation direction can be changed through wiring or programming-card settings.Exchange two of the three ESC wires or use the programming card. |
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