Feetech STS3009BL

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Technical Specifications

Last Updated: 2026-10-10

Identity
Brand
Product Number	ST-3009-C001
Category	Hobby
Performance
Torque	7.4V52.78 oz-in
Speed	7.4V 0.10 sec/60° 7.4V 0.10 sec/60°
Running Current	7.4V0.390 A
Stall Current	≤2.8 AAbove Average
Physical
Weight	1.59 ozTop 10%
Dimensions	L 0.787 in W 1.181 in H 1.437 in
Case Material	Aluminum
Drivetrain
Motor Type	Brushless
Gears	Copper
Gear Spline/Teeth	25 T
Rotation Mode	Multi-turn
Rotation/Support	Single Bearing
Control & Signal
Modulation	Digital
Rotational Range	360°
Angle Sensor	Magnetic Encoder
Control System	TTL / SBUS
Programmable	Yes
Electrical & Environment
Operating Voltage	6–7.4 V
Temperature	-20–60 °C
Certification	ROHS
Connectivity
Wire Length	150 mm
Origin
Country of Origin	China

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*Based on known specs.

Class Comparison

Weight	Top 10% Lighter than 91% of 1902 Digital Standard servos
Stall Current	Above Average Lower draw than 66% of 539 Digital Standard servos

Performance Analysis

Shaft Power	0.98 W
Power Density	0.730 W/in³ More power-dense than 11% of 1759 Digital Standard servos
Torque Density	1.1729 oz-in/g
Torque-to-Volume Ratio	39.49 oz-in/in³
Speed-to-Weight	0.22222 (1/sec·g)
Speed-Torque Trade-off	5.28
Current-per-Torque Ratio	0.0531 A/oz-in
No-Load vs Stall Current Spread	7.18
Voltage Range Width	1.4 V Wider voltage range than 30% of 1539 Digital Standard servos