125A 3-8S SBEC ZTW Skyhawk Brushless ESC Fixed Wing UAV VTOL RC Helicopter ESC
The ZTW Skyhawk 125A opens the 3-8S Skyhawk line for larger fixed-wing UAVs and heavier multirotor platforms. It shares its 171g, 87×40×32mm housing with the 155A, giving builders a lower-current option in the same physical footprint.
ZTW Skyhawk 125A 3-8S SBEC Brushless ESC for Fixed-Wing UAV VTOL RC Helicopter
Opens the 3-8S Skyhawk Line
The 125A is the entry point into Skyhawk's higher-voltage 3-8S bracket, extending the series beyond the 3-6S models to suit larger fixed-wing UAVs and heavier multirotor platforms that need higher pack voltage for more efficient power delivery.
125A Continuous / 140A Burst Current
Running near the top of its voltage bracket, the 125A still holds useful burst headroom for throttle transients and payload changes during sustained high-power, long-endurance flying.
Shares Its Footprint with the 155A
At 171g and 87×40×32mm, the 125A uses the identical housing as the higher-current 155A — a useful option for OEMs and integrators who want to design one ESC bay and offer customers a choice of current rating.
10-Gauge Wiring for High-Voltage Loads
Heavier 10-gauge power and motor wiring supports the higher continuous current and pack voltage of 3-8S operation with lower resistive loss than the 3-6S Skyhawk models.
Adjustable Cutoff Timing and Constant-Speed Mode
The same manually adjustable cutoff/restart timer and precision speed-governing algorithm carry over from the rest of the line, giving larger platforms the same crash-reducing safeguards and flight stability as smaller Skyhawk models.
10A Adjustable SBEC
Switchable 6.0V/7.4V/8.4V output at up to 10A powers a flight controller and full servo or actuator set on large-frame UAV and multirotor platforms without a separate UBEC.
Full Protection, Programming, and Data Feedback
Start-up, over-temperature, phase-loss, signal-loss, low-voltage, and over-current protection are standard, configurable via the LCD Program Card G2 or Bluetooth app, with real-time telemetry on current, voltage, temperature, RPM, and throttle status.


Technical Specifications
| Specifications | Skyhawk 35A SBEC | Skyhawk 65A SBEC | Skyhawk 85A SBEC | Skyhawk 125A SBEC | Skyhawk 155A SBEC | Skyhawk 130A HV SBEC | Skyhawk 160A HV SBEC |
|---|---|---|---|---|---|---|---|
| Continuous Current | 35A | 65A | 85A | 125A | 155A | 130A | 160A |
| Burst Current | 55A | 85A | 130A | 140A | 170A | 150A | 180A |
| Input Voltage | 3-6S LiPo | 3-6S LiPo | 3-6S LiPo | 3-8S LiPo | 3-8S LiPo | 6-14S LiPo | 6-14S LiPo |
| BEC Output | 6V-12V Adj. / 8A | 6V-12V Adj. / 10A | 6V-12V Adj. / 10A | 6.0/7.4/8.4V Adj. / 10A | 6.0/7.4/8.4V Adj. / 10A | 6.0/7.4/8.4V Adj. / 10A | 6.0/7.4/8.4V Adj. / 10A |
| CPU Frequency | 32-bit / 170MHz | 32-bit / 170MHz | 32-bit / 170MHz | 32-bit / 170MHz | 32-bit / 170MHz | 32-bit / 170MHz | 32-bit / 170MHz |
| Programming | LCD Card G2 / iOS & Android App | LCD Card G2 / iOS & Android App | LCD Card G2 / iOS & Android App | LCD Card G2 / iOS & Android App | LCD Card G2 / iOS & Android App | LCD Card G2 / iOS & Android App | LCD Card G2 / iOS & Android App |
| Telemetry | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
| Governor Mode | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
| Firmware Upgrade | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
| Anti-Ignition | No | No | No | No | No | Yes | Yes |
| Power Wire | 14AWG | 14AWG | 12AWG | 10AWG | 10AWG | 10AWG | 10AWG |
| Motor Wire | 16AWG | 14AWG | 12AWG | 10AWG | 10AWG | 10AWG | 10AWG |
| Battery Plug | XT60 (Amass) | XT60 (Amass) | EC5 | EC5 | EC5 | EC5 | EC5 |
| Motor Bullet | 3.5mm | 3.5mm | 4.0mm | 4.0mm | 4.0mm | 5.5mm | 5.5mm |
| Size (L×W×H) | 48×25×16mm | 60×36×19mm | 71×36×37mm | 92×43×37mm | 92×43×37mm | 96×51×38mm | 96×51×38mm |
| Weight | 38g | 63g | 109g | 177g | 177g | 204g | 214g |
| Typical Application | 250-300 Class Heli | 450/450L Class Heli; 50 Class Sport Plane | 420-500 Class Heli; 70 Class 3D/EDF Plane | 500-550 Class Heli; 70-90 Class 3D Plane | 550-580 Class Heli | 550-600 Class Heli; 90-140 Class F3A/3D Plane | 550-600 Class Heli; 90-140 Class F3A/3D Plane |