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Technical Specifications
Last Updated: 2026-10-25
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | ST-5420-C001 |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
347.19 oz-in
25.00 kg-cm
2.5 N-m
6.0V
284.69 oz-in
20.50 kg-cm
2.0 N-m
|
| Speed |
7.4V
0.11 sec/60°
540.5 deg/s
90.1 RPM
6.0V
0.13 sec/60°
451.1 deg/s
75.2 RPM
|
| Running Current |
7.4V0.480 A480 mA |
| Stall Current | 3.8–4.7 A3800–4700 mABelow Average |
| Physical | |
| Weight | 2.31 oz65.5 gBelow Average |
| Dimensions |
L 1.598 in W 0.787 in H 1.181 in L 40.6 mm W 20.0 mm H 30.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Multi-turn |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Clockwise |
| Rotational Range | 360° |
| Refresh Rate | 333 Hz |
| Angle Sensor | Magnetic Encoder |
| Control System | TTL |
| Electrical & Environment | |
| Operating Voltage | 4–8.4 V |
| Temperature | -20–60 °C-4–140 °F |
| Idle Current | 0.018 A18 mA |
| Connectivity | |
| Wire Length | 150 mm5.91 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
| Weight | Below Average Lighter than 11% of 304 Digital Low Profile servos |
| Stall Current | Below Average Lower draw than 21% of 81 Digital Low Profile servos |
Performance Analysis
| Shaft Power | 3.96–5.78 W |
| Power Density | 3.891 W/in³ More power-dense than 54% of 273 Digital Low Profile servos |
| Torque Density | 4.3464 oz-in/g |
| Torque-to-Volume Ratio | 191.52 oz-in/in³ |
| Speed-to-Weight | 0.11479 (1/sec·g) |
| Speed-Torque Trade-off | 37.87 |
| Current-per-Torque Ratio | 0.0165 A/oz-in |
| Idle-to-Running Current Ratio | 0.038 |
| No-Load vs Stall Current Spread | 9.79 |
| Voltage Range Width | 4.4 V Wider voltage range than 93% of 276 Digital Low Profile servos |
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