ESC Overview:
The Spektrum™ Firma 120A Black Edition 3S Brushless Smart ESC brings cutting-edge Smart technology to your RC vehicle with unmatched performance, connectivity, and simplicity. Designed for high-powered 1/8 scale surface applications, this ESC delivers not just power regulation but real-time telemetry and efficient system integration. With a waterproof design, versatile programming options, and durable construction, it’s ready for nearly any terrain or condition. Whether you’re bashing, racing, or crawling, the Firma Smart ESC provides the confidence and tools to optimize your driving experience.
About the ESC
Advanced Smart Technology and Performance
At the heart of the Firma 120A Black Edition is a fast, 32-bit ARM M4 processor that ensures precise control and efficient power delivery. Smart telemetry sends real-time data like RPM, battery voltage, temperature, and more directly to your compatible Spektrum transmitter—no additional modules or wiring required. This ESC supports high current BEC output (6V or 7.4V @ 4A), features multiple programming options, and offers built-in protection systems for over-current, low voltage, and thermal issues. Waterproof and ready to run, it’s compact enough to fit in most 1/8 scale vehicles and built with a rugged case, aluminum heat sink, and fan for optimal cooling.
Features:
- 32-bit G4 processor running at 170MHz
- High-efficiency MOSFETs with low heat generation
- Automatic self-check at power-on
- Smart cooling fan activates above 40°C
- Adjustable helicopter governor function
- Stall landing delay timer
- Parameter programming via app or transmitter
- Telemetry support for major systems
- Five-color LED status indicators
- Multiple integrated protection functions
Includes:
- (1) Spektrum™ Firma™ Smart ESC
- (1) Spektrum Smart Sticker Sheet
- (1) Product Manual
Specifications:
| Suggested Application | 1/10 Surface |
|---|---|
| Motor Type | Brushless |
| Input Voltage | 3-4S LiPo (11.1-14.8V) |
| Continuous Current | 120A |
| Peak Current | 830A |
| Dimensions (LxWxH) | 1.7×1.53×1.33in (43x39x34mm) |
| Weight | 5.4oz (153g) |
| Motor Limits: | – |
| BEC Voltage | 6.0-7.0V Selectable |
| BEC Continuous Current | 4A |
| BEC Peak Current | – |
| Motor Connector | 4mm Bullet |
| Battery Connector | IC5 |
| Motor Wire | – |
| Battery Wire | – |
| Throttle Wire | – |
| Programmable | Button, Programming Box, Smartlink App, On Screen Text Gen |
User Manual
This product was added to our catalog on July 30, 2025
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