RC-Tek SDG-401HB

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-26

Identity
Brand
Product Number	S401HB
Category	Hobby
Discontinued	Yes
Performance
Torque	6.0V 15.30 oz-in 4.8V 12.50 oz-in Below Average
Speed	6.0V 0.06 sec/60° 4.8V 0.07 sec/60° Top 10%
Physical
Weight	0.35 ozAverage
Dimensions	L 0.91 in W 0.45 in H 0.95 in
Control & Signal
Modulation	Digital
Control System	PWM
Electrical & Environment
Operating Voltage	4.8–6 V
Temperature	-20–60 °C
Connectivity
Wire Length	150 mm
Origin
Country of Origin	Taiwan

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Compatible Hardware

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*Based on known specs.

Class Comparison

Torque	Below Average Stronger than 10% of 349 Digital Micro servos at 4.8V
Speed	Top 10% Faster than 94% of 347 Digital Micro servos at 4.8V
Weight	Average Lighter than 58% of 597 Digital Micro servos

Performance Analysis

Shaft Power	0.33–0.47 W
Power Density	1.212 W/in³ More power-dense than 26% of 563 Digital Micro servos
Torque Density	1.2755 oz-in/g Stronger than 4% of 349 Digital Micro servos
Torque-to-Volume Ratio	32.13 oz-in/in³ Denser torque than 6% of 345 Digital Micro servos
Speed-to-Weight	1.45773 (1/sec·g) Faster than 88% of 347 Digital Micro servos
Speed-Torque Trade-off	0.88 Better balanced than 4% of 345 Digital Micro servos
Torque Gain per Volt	18.67%/V More voltage-responsive (torque) than 65% of 290 Digital Micro servos
Speed Gain per Volt	13.89%/V More voltage-responsive (speed) than 26% of 295 Digital Micro servos
Voltage Range Width	1.2 V Wider voltage range than 40% of 496 Digital Micro servos