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Feetech FT90R
Micro

Feetech FT90R

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-09
Identity
Brand Feetech
Category Hobby
Performance
Torque
6.0V 20.84 oz-in
4.8V 18.06 oz-in Below Average
3.0V 13.89 oz-in
Speed
6.0V 0.08 sec/60°
4.8V 0.09 sec/60° Above Average
3.0V 0.16 sec/60°
Running Current
6.0V 0.120 A
4.8V 0.100 A Above Average
Stall Current 0.7–0.8 AAverage
Physical
Weight 0.32 ozAverage
Dimensions L 0.902 in
W 0.476 in
H 1.043 in
Case Material Plastic
Drivetrain
Motor Type Brushed
Gears Plastic
Gear Spline/Teeth 20 T
Rotation Mode Continuous
Rotation/Support Bushing
Control & Signal
Modulation Digital
Direction Bidirectional
Rotational Range 360°
Mechanical Limit No Limit
Pulse Width 900-2100 µs
Neutral Position 1500 µs
Dead Band 20 µs
Control System PWM
Electrical & Environment
Operating Voltage 4.8–6 V
Temperature -10–70 °C
Idle Current 0.006 A
Connectivity
Connector JR (Universal)
Wire Length 250 mm
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.

Class Comparison

TorqueBelow Average
Stronger than 22% of 328 Digital Micro servos at 4.8V
SpeedAbove Average
Faster than 69% of 328 Digital Micro servos at 4.8V
WeightAverage
Lighter than 61% of 620 Digital Micro servos
Running CurrentAbove Average
Lower draw than 81% of 53 Digital Micro servos at 4.8V
Stall CurrentAverage
Lower draw than 55% of 194 Digital Micro servos

Performance Analysis

Shaft Power 0.16–0.48 W
Power Density1.076 W/in³
More power-dense than 20% of 590 Digital Micro servos
Torque Density2.0067 oz-in/g
Stronger than 34% of 327 Digital Micro servos
Torque-to-Volume Ratio40.33 oz-in/in³
Denser torque than 12% of 327 Digital Micro servos
Speed-to-Weight1.23457 (1/sec·g)
Faster than 78% of 327 Digital Micro servos
Speed-Torque Trade-off1.63
Better balanced than 20% of 327 Digital Micro servos
Current-per-Torque Ratio0.0443 A/oz-in
More efficient than 40% of 85 Digital Micro servos
Idle-to-Running Current Ratio0.060
Lower idle draw than 44% of 37 Digital Micro servos
No-Load vs Stall Current Spread8.00
Narrower current spread than 34% of 36 Digital Micro servos
Torque Gain per Volt12.83%/V
More voltage-responsive (torque) than 26% of 268 Digital Micro servos
Speed Gain per Volt10.41%/V
More voltage-responsive (speed) than 9% of 273 Digital Micro servos
Voltage Range Width1.2 V
Wider voltage range than 15% of 511 Digital Micro servos
Dead-Band-to-Pulse-Width Ratio0.0167
Finer dead band than 0% of 189 Digital Micro servos

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