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Servo Futaba S-U300 Standard (S-Bus)


New product

Replacement of the old S3003

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In stock

10,56 €

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4 0,51 € Up to 2,04 €
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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


Dear friends,

We want to say thank you very much, for your cooperation, after 15 January 2021, until today, placing your orders, almost entirely through our online store or by Email, which translated into an increase in sales of 34% in relation to the homologated period of 2020.
The most difficult way of working, which now ends, has caused some errors, which have been overcome, serving to partially improve the way we work. Our sincere thanks to all.

We are, again at your disposal 100% with the commitment, already recognized, trying to always do better.

The management

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