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Technical Specifications
Last Updated: 2026-07-28Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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| Identity | |
| Brand |  |
| Product Number | HD-1900A |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
16.70 oz-in
1.20 kg-cm
0.1 N-m
4.8V
20.80 oz-in
1.50 kg-cm
0.1 N-m
|
| Speed |
6.0V
0.08 sec/60°
750.0 deg/s
125.0 RPM
4.8V
0.11 sec/60°
545.5 deg/s
90.9 RPM
|
| Running Current | (add) |
| Stall Current | (add) |
| Shaft Power | 0.35–0.39 W |
| Physical | |
| Weight | 0.32 oz9.0 g |
| Dimensions |
L 0.91 in W 0.48 in H 1.14 in L 23.1 mm W 12.2 mm H 29.0 mm |
| Case Material | (add) |
| Drivetrain | |
| Motor Type | (add) |
| Motor Drive | (add) |
| Gears | Plastic |
| Gear Spline/Teeth | 25 T estimate |
| Rotation Mode | (add) |
| Rotation/Support | Bushing |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Analog |
| Direction | (add) |
| Rotational Range | (add) |
| Mechanical Limit | (add) |
| Pulse Cycle | (add) |
| Pulse Width | (add) |
| Neutral Position | 1520 µs |
| Dead Band | (add) |
| Refresh Rate | 50 Hz |
| Angle Sensor | (add) |
| Control System | (add) |
| Programmable | (add) |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | (add) |
| Regulator Type | (add) |
| Temperature | -10–60 °C14–140 °F |
| Water Rating | (add) |
| Certification | (add) |
| Idle Current | (add) |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | (add) |
| Origin | |
| Country of Origin | Hong Kong |
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.
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Reviews (2)
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Rex
December 17, 2024Application(s):
Comments: (From hobbyking.com) Very reliable for me. I have a set in a CTH Scythe I fly almost every day for 2 yrs now, 2-5 batteries a day 7min each and these servos are still working through 100's of crashes! I really can't believe they are still going. I have other planes with them and they are going great also. Great servo at a great price
Gramp
September 23, 2017Application(s): Swarm
Comments: This company has the worst datasheets in the world