The EMAX SimonK 12A ESC with 1A 5V UBEC is a brushless electronic speed controller designed for small axis applications, supporting 2-4S LiPo batteries. It is based on the SimonK firmware, optimized for excellent driving performance, and includes features like low voltage and over-temperature protection.
Key specifications include:
– Power On Self Test: Ensures proper functionality before use.
– Speed: Up to 210,000 RPM for 2 poles, 70,000 RPM for 6 poles, and 35,000 RPM for 12 poles.
– MCU and BEC: Separate regulators to enhance anti-jamming capability.
– Programmability: Parameters can be set via a programming card or remote settings.
– Throttle Range: Configurable to be compatible with different receivers, providing excellent low-speed performance.
This ESC is ideal for those looking for reliable and customizable performance in their RC models.
- Suitable for: Remote control Aircraft
- Low-voltage protection, over-heat protection, and self-check functions.
- Separate power supply for MCU and BEC.
- Enhancing the ESC’s ability to eliminate magnetic interference.
- Parameters of the ESC can be set via a program card or transmitter.
- Throttle range can be set to compatible with different receivers.
- Equipped with built-in BEC.
- Max speed: 210,000 rpm for 2-pole, 70,000 rpm for 6-pole, 35,000 rpm for 12-pole.
- BEC Mode: Linear
Specification:
| Item Type: | Brushless ESC |
|---|---|
| Rated Current (A) | 12 |
| Burst Current (A) | 15 |
| Firmware | SimonK |
| BEC (Y/N): | 1A/5V, output, Yes |
| Length (mm): | 45 |
| Width (mm): | 20 |
| Height (mm): | 8 |
Package Includes:
1 x EMAX Simonk 12A ESC
Technical Specifications
| Brand | Emax |
|---|---|
| Current Rating | 12A |
| SKU | AI4594 |
| Weight | 0.02 kg |
| Availability | In Stock |
Applications & Use Cases
The EMAX Simonk 12A ESC is a versatile (esc) drone speed controller used across a wide range of applications including brushless motor speed control, FPV drone builds, multirotor platforms, and RC aircraft.
Common use cases:
- Controlling motor speed in a quadcopter
- Replacing a burnt ESC after a short
- Upgrading to BLHeli_32 for smoother throttle response
This product is ideal for drone builders and RC enthusiasts.
Technical Tip: Choose ESC amperage 20% above your motor's max draw. DShot600 protocol recommended for modern builds.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
- Genuine Emax product sourced from authorized channels



Sanjay Modi –
Excellent product for the price. My drone flies smoothly with this EMAX Simonk 12A ESC. Highly recommended!
Amit Shetty –
This EMAX Simonk 12A ESC is exactly what I needed for my drone. Works perfectly, very reliable.
Tushar Saini (verified owner) –
Decent EMAX Simonk 12A ESC for the price. Using it in my quadcopter, performs well overall.
Vivek Negi (verified owner) –
Nice EMAX Simonk 12A ESC, does the job. Delivery took a couple of extra days but product is solid.
Ashish Bhatt (verified owner) –
Solid EMAX Simonk 12A ESC. Not the absolute best but excellent value for the price point.
Sahil Luthra (verified owner) –
Excellent product for the price. My drone flies smoothly with this EMAX Simonk 12A ESC. Highly recommended!
Himanshu Garg (verified owner) –
Excellent product for the price. My drone flies smoothly with this EMAX Simonk 12A ESC. Highly recommended!
Tejas Bhatt (verified owner) –
Bought this for my college drone project. Works great, professor was impressed!
Vipin Khanna (verified owner) –
Excellent product for the price. My drone flies smoothly with this EMAX Simonk 12A ESC. Highly recommended!
Lalit Shetty (verified owner) –
Very good quality EMAX Simonk 12A ESC. I’ve been building drones for 2 years now and this is one of the best I’ve used.
Daksh Bose (verified owner) –
Been using this EMAX Simonk 12A ESC for 3 months now, zero issues. Great product.
Eshan Singh (verified owner) –
Good EMAX Simonk 12A ESC. Works well for my drone build. Packaging could be slightly better.
Dhruv Trivedi –
Nice EMAX Simonk 12A ESC, does the job. Delivery took a couple of extra days but product is solid.
Rashmi Kapoor –
Been using this EMAX Simonk 12A ESC for 3 months now, zero issues. Great product.
Anil Bhat (verified owner) –
Decent EMAX Simonk 12A ESC for the price. Using it in my quadcopter, performs well overall.