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Corona DS939MG-II
Micro

Corona DS939MG-II

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-09-12
Identity
Brand Corona
Product Number (add)
Category Hobby
Performance
Torque
6.0V 55.52 oz-in
4.8V 49.97 oz-in
Speed
6.0V 0.14 sec/60°
4.8V 0.15 sec/60°
Running Current (add)
Stall Current (add)
Physical
Weight 0.53 oz
Dimensions L 0.89 in
W 0.45 in
H 0.97 in
Case Material (add)
Drivetrain
Motor Type (add)
Motor Drive (add)
Gears Metal
Gear Spline/Teeth (add)
Shaft Size (add)
Rotation Mode (add)
Rotation/Support (add)
Backlash (add)
Control & Signal
Modulation Digital
Direction (add)
Rotational Range 90°
Mechanical Limit (add)
Pulse Cycle (add)
Pulse Width (add)
Neutral Position (add)
Dead Band 2 µs
Refresh Rate (add)
Angle Sensor (add)
Control System PWM
Programmable (add)
Signal Voltage (add)
Electrical & Environment
Operating Voltage 4.8–6 V
Power Source External
Regulator Type Direct
Temperature (add)
Water Rating (add)
Certification (add)
Idle Current (add)
Connectivity
Connector JR (Universal) estimate
Wire Length 215 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.

Performance Analysis

Shaft Power 0.62–0.73 W
Torque Density3.3093 oz-in/g
Stronger than 80% of the 237 Digital Micro servos in the database
Torque-to-Volume Ratio128.49 oz-in/in³
Denser torque than 79% of the 239 Digital Micro servos in the database
Power Density1.886 W/in³
More power-dense than 49% of the 543 Digital Micro servos in the database
Speed-to-Weight0.44150 (1/sec·g)
Faster than 8% of the 237 Digital Micro servos in the database
Speed-Torque Trade-off7.50
Better balanced than 89% of the 239 Digital Micro servos in the database
Torque Gain per Volt9.26%/V
More voltage-responsive (torque) than 8% of the 191 Digital Micro servos in the database
Speed Gain per Volt5.96%/V
More voltage-responsive (speed) than 1% of the 193 Digital Micro servos in the database
Voltage Range Width1.2 V
Wider voltage range than 16% of the 405 Digital Micro servos in the database

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