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Servo Futaba S-U300 Standard (S-Bus)


New product

Replacement of the old S3003

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10,56 €

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Data sheet

Servo Type Digital
Torque + 3 - 5 Kg
Gear Nylon

More info

Futaba's most popular servo, S3003, has now a DIGITAL successor, with more Torque and more Precision. Look out for the brand's new "mainstream". Do not miss the promotions!


The Futaba S-U300 is a low budget standard servo that replaces the older S3003, S148, FS100 servos.

A robust universal servo with a large positioning force of 41 Ncm. High vibration resistance and a long service life thanks to wireless assembly technology. The reset potentiometer has a 6-fold sliding contact with indirect drive. State-of-the-art technology at an affordable price.

Programmable using S.BUS2 technology. Of course, all S.BUS2 servos can be connected to conventional receivers with PWM modulation. The servos can be addressed in different ways:

1. With the handy programmer SBC-1

2. On the PC with the CIU-3 USB adapter

3. On the S.BUS connection of the transmitter

The following parameters can be set:

  • S.BUS channel assignment
  • Servo polarity
  • Servo type (normal / retractable undercarriage)
  • Soft start (on / off)
  • Mode selection in the event of signal failure Hold or Free
  • Soft servo run (on / off)
  • Servo position (servo tester)
  • Servo center adjustment +/- 300 µs (approx. 30 degrees)
  • Servo speed, 0.39 - 9 seconds per 45 degrees
  • Setting the dead band (dead band)
  • Servo travel setting left and right separately, approx. 50 - 175%
  • Starting power
  • Cushioning
  • Holding force
  • ID storage


  • Powerful S.BUS2 digital servo with plastic gear
  • Low-wear potentiometer
  • Robust plastic housing
  • High resolution
  • High positioning accuracy


  • 60 ° actuating speed: 0.19 / 0.23 s (6.0 / 4.8 V)
  • Actuating torque: 4.1 / 3.2 kgcm (6.0 / 4.8 V)
  • Operating voltage: 4.8 - 6.0 V
  • Control frequency: 50 - 70 Hz
  • Weight: 36 g
  • Dimensions: 40.4 x 19.8 x 36 mm
  • Bore 25T

The S-U300 will replace these Futaba servos:

  • S148
  • S3003
  • S3005
  • FS100



We guarantee repairs to your radio equipment, from Drones, Cars, Helis, Planes or Boats, with its own workshop and specialized personnel. (static, radio control, electronic repair, etc.)

You can count on a service of excellence, with advice of accessories or parts adjusted to your needs and with the guarantee of the quality that our services offer.

We know that not everyone is experienced and often the first steps in radiomodelismo are obscure and difficult, but we are here to help and follow you in the evolution of your knowledge of this fabulous hobby.

Want to evolve your vehicle? Well, you can count on the best advice to do a complete upgrade, in phases or even to add the accessory that you want but do not have enough knowledge to apply it.

Count on us, count on free budgets, clear and without surprises in the end.

Purchased at SVModelismo or another shop, your vehicle is always well treated with our technicians and with a complete workshop.

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