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Technical Specifications
Last Updated: 2026-10-08| Identity | |
| Brand |  |
| Product Number | DS20x-SMD |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
222.20 oz-in
16.00 kg-cm
1.6 N-m
4.8V
194.40 oz-in
14.00 kg-cm
1.4 N-m
|
| Speed |
6.0V
0.11 sec/60°
545.5 deg/s
90.9 RPM
4.8V
0.13 sec/60°
461.5 deg/s
76.9 RPM
|
| Running Current |
6.0V
0.300 A
300 mA
4.8V
0.230 A
230 mA
|
| Stall Current | 0.75–0.9 A750–900 mATop 10% |
| Physical | |
| Weight | 1.85 oz52.5 gAbove Average |
| Dimensions |
L 1.57 in W 0.77 in H 1.44 in L 39.9 mm W 19.6 mm H 36.6 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Clockwise |
| Rotational Range | 90° |
| Mechanical Limit | 140° |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Control System | PWM |
| Programmable | Yes |
| Signal Voltage | 2.5-5V |
| Electrical & Environment | |
| Operating Voltage | 3.5–7.3 V |
| Temperature | -10–60 °C14–140 °F |
| Idle Current | 0.007 A7 mA |
| Connectivity | |
| Connector | Futaba J estimate |
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 | Above Average Lighter than 81% of 1902 Digital Standard servos |
| Stall Current | Top 10% Lower draw than 99% of 539 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.77–3.74 W |
| Power Density | 2.146 W/in³ More power-dense than 47% of 1759 Digital Standard servos |
| Torque Density | 3.7029 oz-in/g |
| Torque-to-Volume Ratio | 111.67 oz-in/in³ |
| Speed-to-Weight | 0.14652 (1/sec·g) |
| Speed-Torque Trade-off | 25.27 |
| Current-per-Torque Ratio | 0.0046 A/oz-in |
| Idle-to-Running Current Ratio | 0.030 |
| No-Load vs Stall Current Spread | 3.91 |
| Voltage Range Width | 3.8 V Wider voltage range than 88% of 1539 Digital Standard servos |
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Reviews (3)
-
Ehh Man
September 16, 2013Application(s): Trex 550 cyclic
Comments: Good high resolution servos. Gear trains sometimes have "gritty" spots due to tight gear mesh but the gears will break in and smooth out after a few dozen flights. If your radio system has any jitter in the PWM signal these servos will try to move in response to it and will jitter and buzz. This can be eliminated by raising the deadband slightly higher than the jitter so the servo ignores it (this is the fault of the radio system not the servo) Hyperion doesn't sell cases for these but you can use an Airtronics 94842 case (both servos are made by the same manufacturer)
Silicon-Surfer
July 26, 2012Application(s): T-Rex 600E Pro Helicopter
Comments: I installed 3 of these a cylic servos on my T-Rex 600E pro, and couldn't be happier. They have heaps of torque, perform flawlessly and the price is excellent! Highly recommended!
DrFizz2k1
June 18, 2010Application(s): HPI Blitz SCT
Comments: Installed easily, performance is excellent, super fast, lots of torque. outperforms my previous "best" servo (ACE DS1313) with ease. At about half the price of comparable servos from other companies, I'm for sure going to buy more!