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Technical Specifications
Last Updated: 2026-10-09| Identity | |
| Brand |  |
| Product Number | HD-DSP33 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
4.86 oz-in
0.35 kg-cm
0.0 N-m
4.8V
4.17 oz-in
0.30 kg-cm
0.0 N-m
Bottom 10%
|
| Speed |
6.0V
0.07 sec/60°
857.1 deg/s
142.9 RPM
4.8V
0.09 sec/60°
666.7 deg/s
111.1 RPM
Above Average
|
| Physical | |
| Weight | 0.11 oz3.0 gTop 10% |
| Dimensions |
L 0.787 in W 0.343 in H 0.866 in L 20.0 mm W 8.7 mm H 22.0 mm |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Plastic |
| Gear Spline/Teeth | 25 T estimate |
| Rotation/Support | Bushing |
| Control & Signal | |
| Modulation | Digital |
| Pulse Cycle | 3.003 ms |
| Neutral Position | 1520 µs |
| Refresh Rate | 333 Hz |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Temperature | -20–50 °C-4–122 °F |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 70 mm2.76 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 | Bottom 10% Stronger than 0% of 328 Digital Micro servos at 4.8V |
| Speed | Above Average Faster than 73% of 328 Digital Micro servos at 4.8V |
| Weight | Top 10% Lighter than 99% of 620 Digital Micro servos |
Performance Analysis
| Shaft Power | 0.09–0.13 W |
| Power Density | 0.549 W/in³ More power-dense than 4% of 590 Digital Micro servos |
| Torque Density | 1.3900 oz-in/g Stronger than 6% of 327 Digital Micro servos |
| Torque-to-Volume Ratio | 17.84 oz-in/in³ Denser torque than 0% of 327 Digital Micro servos |
| Speed-to-Weight | 3.70370 (1/sec·g) 2nd-highest speed-to-weight of 327 Digital Micro servos |
| Speed-Torque Trade-off | 0.38 Better balanced than 0% of 327 Digital Micro servos |
| Torque Gain per Volt | 13.79%/V More voltage-responsive (torque) than 31% of 268 Digital Micro servos |
| Speed Gain per Volt | 23.80%/V More voltage-responsive (speed) than 78% of 273 Digital Micro servos |
| Voltage Range Width | 1.2 V Wider voltage range than 32% of 511 Digital Micro servos |
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Reviews (2)
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Json
September 28, 2018Application(s): dreamflight Libelle DLG, all 4
Comments: One after another melted itself down during normal operation. They just overheated until they were blocked - the worst
mariofer
October 15, 2013Application(s): Rudder + elevator on ELF DL glider
Comments: Received 2 of them in a combo pack with an ELF DL glider.
No screws hold the 3 pieces of the case together: just a small loop of clear shrink wrap. If you glue them on, after wrapping with tape, the case won't come apart, otherwise maybe adding some more cross-wrapping would help...
Mine work ok, and sustained several heavy crashes too.