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Futaba S-A400
Low Profile

Futaba S-A400

Compatible Hardware

*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-07-28
Identity
Brand Futaba
Product Number 01102403-3
Category Hobby
Performance
Torque
7.4V 111.10 oz-in
6.0V 100.00 oz-in
Speed
7.4V 0.08 sec/60°
6.0V 0.09 sec/60°
Running Current (add)
Stall Current (add)
Physical
Weight 1.62 oz
Dimensions L 1.59 in
W 0.79 in
H 1.00 in
Case Material (add)
Drivetrain
Motor Type (add)
Motor Drive (add)
Gears Metal
Gear Spline/Teeth 25 T estimate
Shaft Size (add)
Rotation Mode (add)
Rotation/Support (add)
Backlash (add)
Control & Signal
Modulation Digital
Direction (add)
Rotational Range (add)
Mechanical Limit (add)
Pulse Cycle (add)
Pulse Width (add)
Neutral Position (add)
Dead Band (add)
Refresh Rate (add)
Angle Sensor (add)
Control System (add)
Programmable (add)
Signal Voltage (add)
Electrical & Environment
Operating Voltage 6–7.4 V
Power Source (add)
Regulator Type (add)
Temperature (add)
Water Rating (add)
Certification (add)
Idle Current (add)
Connectivity
Connector (add)
Wire Length (add)
Origin
Country of Origin Japan

Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.

Performance Analysis

Shaft Power 2.05–2.57 W
Torque Density2.1772 oz-in/g
Stronger than 25% of the 96 Digital Low Profile servos in the database
Torque-to-Volume Ratio79.61 oz-in/in³
Denser torque than 34% of the 96 Digital Low Profile servos in the database
Power Density2.044 W/in³
More power-dense than 36% of the 188 Digital Low Profile servos in the database
Speed-to-Weight0.24191 (1/sec·g)
Faster than 68% of the 96 Digital Low Profile servos in the database
Speed-Torque Trade-off9.00
Better balanced than 23% of the 94 Digital Low Profile servos in the database
Torque Gain per Volt7.93%/V
More voltage-responsive (torque) than 11% of the 75 Digital Low Profile servos in the database
Speed Gain per Volt8.92%/V
More voltage-responsive (speed) than 6% of the 79 Digital Low Profile servos in the database
Voltage Range Width1.4 V
Wider voltage range than 24% of the 165 Digital Low Profile servos in the database

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