Matek Micro BEC Adjustable Step-Down Regulator 6-30V to 5V/9V 1.5A for FPV Quadcopters
Matek Micro BEC Adjustable Step-Down Regulator 6-30V to 5V/9V 1.5A for FPV Quadcopters
The Matek Micro BEC is a compact synchronous step-down regulator designed to power flight controllers and other electronics in FPV racing quadcopters. It accepts a wide 6V to 30V input, making it compatible with 2S to 6S LiPo batteries, and outputs a stable 5V or adjustable 9V (default 5V). With a continuous load current of 1.5A (peaking at 2.5A for short bursts), this regulator suits 4-5 inch frames like the Martian II 220, QAV250, QAV210, and X210.
What Makes This BEC Different?
This regulator uses synchronous step-down technology for high efficiency, meaning less heat and longer flight times. The output voltage can be changed from 5V to 9V by bridging two small soldering pads—no extra components needed. It also includes overload protection (OCP) with hiccup mode, thermal shutdown, and short-circuit tolerance for up to 5 seconds per minute, adding reliability in crash-prone builds.
Technical Specifications
| Input Voltage Range | 6V – 30V (2S-6S LiPo) |
| Output Voltage | 5V (default) or 9V (adjustable via solder bridge) |
| Continuous Output Current | 1.5A |
| Peak Current (5s/min) | 2.5A |
| Output Load Regulation | 2% |
| Standby Current | <5mA |
| Maximum Duty Cycle | 95% |
| Dimensions | 10 x 14 x 3 mm |
| Weight | 1g per unit |
| Pin Spacing | 2.54mm |
| Package Contents | 3 pieces |
How to Adjust the Output to 9V
To get 9V output, you need to bridge the two soldering pads indicated in the product picture. The default setting is 5V, so if you leave the pads open, the regulator outputs 5V. Bridging them changes the feedback resistor divider to produce 9V. This is a permanent hardware adjustment—make sure your connected devices can handle 9V before doing this.
Is It Compatible with My Quadcopter Frame?
This BEC is designed for 4-inch and 5-inch FPV racing quadcopter frames, especially X-style frames like the Martian II 220, QAV250, QAV210, and X210. Its tiny footprint (10x14mm) and light weight (1g) make it easy to mount on tight builds. It works with any 2S-6S LiPo battery and can power flight controllers, VTX, receivers, and other 5V/9V electronics.
Frequently Asked Questions
Can I use this BEC with a 4S battery?
Yes, the input range is 6V to 30V, so 4S (14.8V nominal) works perfectly.
What is the difference between continuous and peak current?
Continuous 1.5A is the safe operating limit. You can draw up to 2.5A for short bursts (5 seconds per minute), but the regulator may overheat if sustained longer.
Does it come with wires or connectors?
The package includes only the three BEC boards. No wires, pins, or connectors are included.
Is this regulator suitable for non-FPV applications?
While designed for FPV quadcopters, it can be used wherever a small, efficient step-down regulator is needed, as long as the input and output requirements match.