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Corona SB-9039 S.Bus Mini Digital MG Servo 2.7kg / 0.013sec / 12.5g

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Corona SB-9039 S.Bus Mini Digital MG Servo 2.7kg / 0.013sec / 12.5g


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Corona S.Bus digital servo's are up there with the best that are on the market today at a price that is very affordable, high resolution and accurate centering are just two of the many features they have.

• S.Bus compatible
• High resolution
• The tightest deadband
• Accurate positioning and centering
• Faster control response
• Quicker acceleration
• Constant torque throughout the servos travel
• Increased holding power when stationary
• High precision potentiometer


Model: SB-9039
Voltage: 4.8/6v
Speed: 0.14/0.13sec 60°
Torque: 2.5/
Current Draw: 200/240mA
Dead Band Width: iÜ3usec
Travel: 40°/one side pulse travelling
Bearing: MR85
Gears: Metal
Gear Type: Digital
Motor: Brushless
Servo Wire length: 215mm
Operating Temp: -20/+60°C
Weight: 12.5g
Dimensions: 22.5 x 11.5 x 24.5mm
Spline count: 21


What is S.BUS?
Different from conventional radio control systems the
S.BUS system uses data communication to transmit control signals from a receiver to a servo, gyro, or other S.BUS compatible device. This data includes commands such as “move the channel 3 servo to 15
degrees, move the channel 5 servo to 30 degrees” to multiple devices. The S.BUS devices execute only those commands for their own set channel. For this reason, it can be used by connecting multiple servos to the same signal line.

[Operation by conventional radio control]
An S.BUS servo connected to a conventional receiver operates as a conventional servo.

  • Servo Torque(kg)(min. 0.01kg) 2.70
  • Servo Speed (Sec/60deg) 0.13
  • Servo A(mm) 31.00
  • Servo B(mm) 23.00
  • Servo C(mm) 29.00
  • Servo D(mm) 12.00
  • Servo E(mm) 32.00
  • Servo F(mm) 19.00

Dimension Diagram Guide

  • attributeset-11


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Darryll | Verified Buyer

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Oct 04, 2017

Ok Just got 6 of them. They all work and programmed them using the CSBP-1. Everything worked as it should and they work fine on my Futaba 12 FGH using S-Bus. Servos are quiet in the motor but some gear noise. When moving the stick slowly the servo motor feels a little like it is framing but otherwise works perfectly on 7.4v LiPo.
We are off to a good start I'll report back in 6 months.

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