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Technical Specifications
Last Updated: 2026-10-27
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | DS939MG II |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
55.52 oz-in
4.00 kg-cm
0.4 N-m
4.8V
49.97 oz-in
3.60 kg-cm
0.4 N-m
Above Average
|
| Speed |
6.0V
0.14 sec/60°
428.6 deg/s
71.4 RPM
4.8V
0.15 sec/60°
400.0 deg/s
66.7 RPM
Below Average
|
| Physical | |
| Weight | 0.53 oz15.1 gBelow Average |
| Dimensions |
L 0.886 in W 0.453 in H 0.969 in L 22.5 mm W 11.5 mm H 24.6 mm |
| Drivetrain | |
| Gears | Metal |
| Rotation Mode | Positional |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 80° |
| Dead Band | 2 µs |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | External |
| Regulator Type | Direct |
| Temperature | -20–60 °C-4–140 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 215 mm8.46 in |
| 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
| Torque | Above Average Stronger than 81% of 349 Digital Micro servos at 4.8V |
| Speed | Below Average Faster than 19% of 347 Digital Micro servos at 4.8V |
| Weight | Below Average Lighter than 28% of 597 Digital Micro servos |
Performance Analysis
| Shaft Power | 0.62–0.73 W |
| Power Density | 1.886 W/in³ More power-dense than 51% of 563 Digital Micro servos |
| Torque Density | 3.3093 oz-in/g Stronger than 77% of 349 Digital Micro servos |
| Torque-to-Volume Ratio | 128.49 oz-in/in³ Denser torque than 78% of 345 Digital Micro servos |
| Speed-to-Weight | 0.44150 (1/sec·g) Faster than 13% of 347 Digital Micro servos |
| Speed-Torque Trade-off | 7.50 Better balanced than 84% of 345 Digital Micro servos |
| Torque Gain per Volt | 9.26%/V More voltage-responsive (torque) than 9% of 290 Digital Micro servos |
| Speed Gain per Volt | 5.96%/V More voltage-responsive (speed) than 1% of 295 Digital Micro servos |
| Voltage Range Width | 1.2 V Wider voltage range than 19% of 496 Digital Micro servos |
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Reviews (1)
Includes 1 review aggregated from around the web.
There are very few reviews for this servo on the web. A French tester of Corona metal-gear micro servos says each model they tried pleasantly surprised them.
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