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Futaba - FUTM0303 FUTS3150 S3150 513886202087 4513886202087
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Futaba S3150 Slim Digital Servo
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Futaba S3150 Slim Digital Servo
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Tech Notes
This is the Futaba S3150 Digital Wing Aileron Servo with J Connector.
Designed for aileron applications on gliders, jets, and electric planes.

This servo can produce high-current draw from your batteries.
If using NiMH or LiPo batteries, make sure they are capable
of delivering sufficient amps.


Coreless motor
2 ball bearings
Metal gears
Digitally enhanced microprocessors cut about half the response time
from transmitter input to servo reaction
Dust and water resistant-not water proof
Compact design is especially suited for easy installation inside
the wing of smaller gliders, jets and electric planes.
Black plastic case
One year warranty


One S3150 Wing Aileron Digital Servo, one 1" (25mm) star shaped
horn, one 1.5mm (39mm) star shaped horn, one 1.8" (45mm) straight
arm, one 1.4" (35mm) diameter horn, two each-screws, eyelets, and


Speed: .24 sec/60 @ 4.8V
Torque: 51.4 oz-in @ 4.8V
Dimensions: 1.2 x 0.4 x 1.1" (30 x 11 x 29mm)
Weight: .81oz (23g)
Power Supply: 4.8V (Futaba does NOT recommend using 6V)


S3150 Digital Servo Precautions,
-It is best to avoid long leads and Y-harnesses especially with
standard grade wires. If problems are encountered, consider using
heavy duty wire such as Futaba's Heavy Duty Series or Hobbico's
Pro Series,minimizing lead lengths, and/or removing Y-harnesses.
-Current Drain: This Digital Servo is specially designed for high-
torque or high-speed, therefore very high current drain is normal
at startup. For ultimate performance when using this servo please
review the following points.
1. Radio systems with the Battery Fail Safe function have a
higher cut-off voltage setting which will cause shorter
operation time.
2. When installing the servo, please check pushrod linkage to
make sure there is no binding in order to prevent excessive
power consumption and decrease the life of the motor and

If servo horn screws are needed, order FUTM2291.
If a servo horn is needed use part number: FUTM1985
(the screw included in this package will not work, you must use the original)

A note on coreless motors: conventional servo motors have a steel
core armature wrapped with wire that spins inside the magnets. In
a coreless design, the armature uses a thin wire mesh that forms a
cup that spins around the outside of the magnet eliminating the
heavy steel core. This design results in smoother operation and
faster response time.

This digital servo cannot be used with the following * AM *
transmitters as the servo neutral signal is: 1310us).
CONQUEST AM, FG Series (T4FG, T5FGK,T6FG, T6FGK, T7FGK), New Terratop,
T3EGX, T3PGE, T2NL, T2LGX, T2FR, T2PK series.

**** Otherwise they will work fine with current AM systems *****

updt jxs 11/01/04
updated jpg 2/28/08

– If you need more information, use these Futaba resources –
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Phone: 217-398-8970
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