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40A BL ESC: Opterra
Brand: E Flite
Part No: EFLA1040W
Out Of Stock
Request Stock NotificationThe E Flite 40A Pro switch‑mode BEC brushless ESC (EFLA1040W) is a high‑quality, efficient sensorless speed controller with an integrated SBEC. It can power servos and the receiver without a separate RX battery, reducing weight and complexity. Designed for 3–6S Li‑Po operation, it delivers up to 40A continuous current with a robust feature set suited to a wide range of fixed‑wing and heli applications.
An exposed, finned aluminium heat sink helps manage temperatures, while safe power‑arming and extensive programming options provide confident setup and operation. Pre‑wired connectors, including an E‑flite EC3 on the battery lead and 3.5mm female bullets on the motor leads, make installation straightforward.
Key Features
- Up to 40‑amp continuous current with proper airflow; 55‑amp burst (15 seconds)
- 5‑volt switch‑mode BEC rated to 2.5A continuous on any recommended input voltage
- Drives up to 7 analog or 6 digital standard‑size servos with the BEC
- Supports 3–6S Li‑Po or 9–18 cell Ni‑Cd/Ni‑MH input
- Finned heat sinks for improved cooling
- Programmable motor braking
- Safe power‑arm mode helps prevent accidental starts
- Programmable low‑voltage cut‑off: 3S (9V), 4S (12V), 5S (15V), 6S (18V) or 70% of starting voltage
- Programmable soft start for helis and airplanes
- Auto motor shutdown if signal is lost or interference is detected
- Programmable timing—5 user‑selectable ranges for a wide variety of brushless motors
- Programmable throttle input range (1.1–1.9 ms or 1.2–1.8 ms)
- Heli mode for starting the motor with a low speed ratio
- New smaller MOSFET technology helps save weight
- Radio system power on/off switch
- Pre‑wired connectors—E‑flite EC3 on battery input and 3.5mm female gold bullets on motor outputs
Specifications
- Brake: Yes – programmable
- Continuous Maximum Current: 40A with reasonable cooling
- Momentary Peak Current: 55A (15 sec)
- Input Voltage: 10.8–22.2V
- Input Connector: 13AWG with E‑flite EC3 connector
- Output Connectors: 13AWG with 3.5mm female gold bullets
- Wire Gauge: 13AWG
- Length: 2.70 in (68.6mm)
- Width: 1.30 in (33.0mm)
- Height: 0.50 in (12.7mm)
- Weight: 2.2 oz (62 g)
This pro‑series speed control combines dependable power delivery with flexible setup, making it a solid choice for performance‑focused RC aircraft builds that value reliability and ease of installation.
Secured by Stripe
The E-flite® 40A Pro switch-mode BEC brushless ESC is a high-quality, innovative and efficient sensorless brushless electronic speed control with an integrated switch-mode BEC. It can operate without the need for a separate receiver battery to power your servos and receivers, saving you weight and complication. It is capable of up to 40 amps continuous current when using 3- to 6-series Li-Po battery packs. You can drive up to 7 analog or 6 digital standard-size servos with the BEC on any recommended input voltage. This ESC also features an exposed, finned heat sink aluminum case with lightweight plastic end-caps. Additional features include safe power-arming along with advanced programmable features such as low-voltage cutoff, braking, timing, throttle input range and more, making this truly a ‘pro series’ speed control.
40A BL ESC: Opterra Features:
- Up to 40-amp continuous current with proper air flow, with 55-amp burst current (15 seconds)
- 5-volt switch-mode BEC circuit capable of 2.5-amp continuous current on any recommended input voltage
- Drive up to 7 analog or 6 digital standard-size servos with the BEC on any recommended input voltage
- 3–6S Li-Po, 9- to 18-cell Ni-Cd/Ni-MH input voltage
- Finned heat sinks
- Programmable motor braking
- Safe power-arm mode prevents accidental starts
- Programmable low-voltage cut-off with settings for 3S Li-Po (9V), 4-cell Li-Po (12V), 5-cell Li-Po (15V), 6-cell Li-Po (18V) or 70% of battery starting voltage
- Programmable soft start for helis and airplanes
- Auto motor shutdown if signal is lost or there is interference
- Programmable timing—5 user-selectable ranges for use with a large variety of brushless motors
- Programmable throttle input range (1.1–1.9 ms or 1.2–1.8 ms)
- Heli mode for starting the motor with a low speed ratio
- Utilizes new smaller MOSFET technology to save weight
- Radio system power on/off switch
- Pre-wired connectors—E-flite® EC3™ connector on battery input and 3.5mm female gold bullets on motor output leads
40A BL ESC: Opterra Specifications:
- Brake:: Yes - programmable
- Continuous Maximum Current:: 40A with reasonable cooling
- Input Voltage:: 10.8–22.2V
- Input Connector Types:: 13AWG with E-flite® EC3™ connector
- Output Connector Types:: 13AWG with 3.5mm female gold bullet connectors
- Momentary Peak Current:: 55A (15 sec)
- Length:: 2.70 in (68.6mm)
- Width:: 1.30 in (33.0mm)
- Height:: 0.50 in (12.7mm)
- Weight:: 2.2 oz (62 g)
- Wire Gauge:: 13AWG
Key Info:
- Brand: E Flite
- Part No: EFLA1040W
- Barcode: 605482176955
- Fitment: Standard Part
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