5v 3A BEC


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Our battery eliminator circuits (BEC’s) are designed around ultra-reliable DC-DC convertors, we could not find anything on the market that met up to requirements so we decided to design our own, our power products have been extensively tested to the highest standards as well as being proven on the bench we use real flights in real aircraft to prove reliability. We do not use LDO regulators in our designs that means that we can maintain high currents with little effect on voltage output (see chart below), during the design phase we were very of the issue of heat management this was the main driver towards component selection, typically our 5v 3A BEC’s will operate at 50°C at full load passively cooled with no airflow the chart below are the results under stress test with a pure DC Load

Volts Amps DC Load* Volt Drop Case Temp Ambient Temp Ripple
5.1279 No Load 0 23c 22c 6.4mV
5.1000 500mA 0.0279 31c 23c 6.4mV
5.0561 1000mA 0.0718 38c 23c 6.5mV
5.0189 1500mA 0.109 40c 23c 6.5mV
4.9859 2000mA 0.142 47c 23c 6.5mV
4.9519 2500mA 0.176 50c 23c 6.4mV
4.9176 3000mA 0.2103 60c ** 23c 6.4mV


Full load 3A output measured at output capacitor using tip and spring method



Available inputs: 3s to 6s – 6s to 12s Max input 70v

Outputs: 5.1v 3A – 5.3v 3A – 5.1v 4A

Connectors: Input XT30 – Output Molex Clickmate 2mm 6 Pin

Input Current: No Load 10mA – Full Load 368mA

Full short circuit protection on output – Trip & restart with auto recovery will not damage BEC

Fully shielded design

Encased in transparent heat shrink

ESD Immunity: EN61000-4-2, Level 2 Perf Criteria A

Radiated Immunity: EN61000-4-3, 3 V/m Perf Criteria A

Conducted Immunity: EN61000-4-6, 3 V rms Perf Criteria A

Magnetic Fields: EN61000-4-8, 1 A/m Perf Criteria A


43mm x 28mm x 20mm

Supplied with:

1 x Clickmate 2mm 6pin plug with tails

1 x Amass XT30 plug with tails


Test Conditions:

Constant DC Load

Fully charged 12s 22000mAh batteries

We performed an endurance test with the unit constantly powered over 14 Days at full load with passive cooling there was no change in performance during this period

*We test using a pure DC Load which is a worst case scenario in normal use this type of load would rarely occur

**Case temperature can be dramatically decreased with a simple heatsink or moderate airflow, using a 25 x 25 x 10mm heatsink the temperature was stable at 56°C


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