The HAKRC 5139 110A Stack combines a high-performance F405V2 flight controller with a powerful 110A 4-in-1 ESC, designed for high-thrust drone builds requiring maximum efficiency and durability. With direct plug connection and integrated damping design, this stack simplifies installation while enhancing flight stability.
Key Features
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High Current ESC: Continuous 110A, Peak 120A, supports 2S–8S LiPo
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Flight Controller: F405V2 with STM32F405RGT6 processor, 16M black box, barometer, 6 UARTs
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ESC MCU: EFM8BB51F16G processor with 50MHz CIP-51 8051 core
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Firmware: BLHeliSuite E_X_40, supports PWM, Oneshot125/42, Multishot, Dshot150/300/600
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Mounting Hole: FC – 30.5x30.5mm; ESC – 56x52mm
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BEC Output: 5V/4A and 12V/3A
Specifications
Flight Controller (F405V2)
| Parameter | Details |
|---|---|
| MCU | STM32F405RGT6 |
| IMU | ICM42688 |
| OSD | AT7456E |
| Flash Memory | 16M black box |
| BEC Output | 5V/4A and 12V/3A |
| Barometer | Integrated |
| UART Ports | 6 |
| Receiver Support | Frsky / Futaba / Flysky / Crossfire / DSMX |
| Mounting | 36×36mm (30.5×30.5mm mounting pattern) |
| Weight | 8.5g |
4-in-1 ESC (5139 110A)
| Parameter | Details |
|---|---|
| Continuous Current | 110A |
| Peak Current | 120A |
| Input Voltage | 2S–8S LiPo |
| MCU | EFM8BB51F16C (50MHz core) |
| Firmware | E_X_40-BLHeliSuite16714902A_Beta |
| Protocol Support | PWM, Oneshot125/42, Multishot, Dshot150/300/600 |
| Size | 56×52mm |
| Weight | 33g |
Design Highlights
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Plug-and-Play Connectivity: Direct connector design eliminates soldering, enabling faster and more secure installation.
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Damped Light Regenerative Braking: Improves motor responsiveness and flight agility, enhancing braking performance and throttle control.
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Shock Absorption: Four rubber grommets reduce vibration and protect onboard electronics, ensuring reliable operation under load.
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Premium Materials: High-quality components including Murata capacitors and multilayer PCBs ensure stability and extended lifespan.
Application
This stack is ideal for high-power freestyle drones, cinematic builds, and long-range quads that demand stable voltage regulation and fast motor response. Compatible with a wide range of receivers and supporting multiple protocols, it offers flexibility for various flight systems.
Details

Hakrc F4551 flight controller wiring diagram. Includes ESC, GPS, camera, LED, buzzer, and TBS connections. Features 3.3V pads controlled by USER1 and USER2. Supports video transmission with 12V power supply or VBAT.

Damped light enhances efficiency, quick motor response, stability, and flexibility for FPV drones.

Plug-and-play connector design for easy installation, eliminating soldering concerns. Compact, efficient FPV drone component.

Hakrc 5139 2-8s FPV Drone supports PWM, Oneshot, Multishot, Dshot protocols.

High-performance processor with CIP-51 8051 core, EFM8BB51F16C chip, and up to 50MHz frequency.

Shock absorption design with four dampers reduces vibration, protecting electronics for stable flight system operation.
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