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Feetech FT90B
Micro

Feetech FT90B

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-07-10
Identity
Brand Feetech
Product Number (add)
Category Hobby
Performance
Torque
6.0V 20.84 oz-in
4.8V 18.06 oz-in
3.0V 13.89 oz-in
Speed
6.0V 0.09 sec/60°
4.8V 0.12 sec/60°
3.0V 0.16 sec/60°
Running Current (add)
Stall Current 0.4–0.7 A
Physical
Weight 0.37 oz
Dimensions L 0.89 in
W 0.48 in
H 0.88 in
Case Material Plastic
Drivetrain
Motor Type Brushed
Motor Drive (add)
Gears Plastic
Gear Spline/Teeth 21 T
Shaft Size (add)
Rotation Mode (add)
Rotation/Support Bushing
Backlash (add)
Control & Signal
Modulation Digital
Direction (add)
Rotational Range 180°
Mechanical Limit 180°
Pulse Cycle (add)
Pulse Width 500-2500 µs
Neutral Position 1500 µs
Dead Band (add)
Refresh Rate (add)
Angle Sensor (add)
Control System PWM
Programmable (add)
Signal Voltage (add)
Electrical & Environment
Operating Voltage 3–6 V
Power Source (add)
Regulator Type (add)
Temperature -20–70 °C
Water Rating (add)
Certification (add)
Idle Current (add)
Connectivity
Connector (add)
Wire Length (add)
Origin
Country of Origin China

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 0.16–0.43 W
Torque Density1.3229 oz-in/g
Stronger than 7% of the 237 Digital Micro servos in the database
Torque-to-Volume Ratio37.34 oz-in/in³
Denser torque than 11% of the 239 Digital Micro servos in the database
Power Density1.151 W/in³
More power-dense than 24% of the 543 Digital Micro servos in the database
Speed-to-Weight0.59524 (1/sec·g)
Faster than 31% of the 237 Digital Micro servos in the database
Speed-Torque Trade-off2.22
Better balanced than 32% of the 239 Digital Micro servos in the database
Current-per-Torque Ratio0.0504 A/oz-in
More efficient than 37% of the 44 Digital Micro servos in the database
Torque Gain per Volt16.68%/V
More voltage-responsive (torque) than 47% of the 191 Digital Micro servos in the database
Speed Gain per Volt25.93%/V
More voltage-responsive (speed) than 87% of the 193 Digital Micro servos in the database
Voltage Range Width3.0 V
Wider voltage range than 69% of the 405 Digital Micro servos in the database

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