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Technical Specifications
Last Updated: 2026-10-21
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | FS5103B |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
44.50 oz-in
3.20 kg-cm
0.3 N-m
4.8V
41.70 oz-in
3.00 kg-cm
0.3 N-m
|
| Speed |
6.0V
0.16 sec/60°
375.0 deg/s
62.5 RPM
4.8V
0.18 sec/60°
333.3 deg/s
55.6 RPM
|
| Running Current |
6.0V
0.180 A
180 mA
4.8V
0.150 A
150 mA
|
| Stall Current | 0.78–0.85 A780–850 mAAbove Average |
| Physical | |
| Weight | 1.43 oz40.5 gAbove Average |
| Dimensions |
L 1.606 in W 0.791 in H 1.496 in L 40.8 mm W 20.1 mm H 38.0 mm |
| Case Material | Nylon / Fiberglass |
| Drivetrain | |
| Motor Type | Brushed |
| Gears | Plastic |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Analog |
| Direction | Counterclockwise |
| Rotational Range | 180° |
| Mechanical Limit | 200° |
| Pulse Cycle | 20 ms |
| Pulse Width | 600-2400 µs |
| Neutral Position | 1500 µs |
| Dead Band | 5 µs |
| Refresh Rate | 50 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Signal Voltage | 3.3–5.0V |
| Electrical & Environment | |
| Operating Voltage | 4–8.4 V |
| Temperature | -15–70 °C5–158 °F |
| Idle Current | 0.006 A6 mA |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 300 mm11.81 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 | Above Average Lighter than 84% of 447 Analog Standard servos |
| Stall Current | Above Average Lower draw than 85% of 63 Analog Standard servos |
Performance Analysis
| Shaft Power | 0.43–0.51 W |
| Power Density | 0.271 W/in³ More power-dense than 11% of 432 Analog Standard servos |
| Torque Density | 1.0296 oz-in/g |
| Torque-to-Volume Ratio | 21.94 oz-in/in³ |
| Speed-to-Weight | 0.13717 (1/sec·g) |
| Speed-Torque Trade-off | 7.51 |
| Current-per-Torque Ratio | 0.0204 A/oz-in |
| Idle-to-Running Current Ratio | 0.040 |
| No-Load vs Stall Current Spread | 5.67 |
| Voltage Range Width | 4.4 V 1st-highest voltage range width of 239 Analog Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0028 Finer dead band than 91% of 56 Analog Standard servos |
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Reviews (1)
Includes 1 review aggregated from around the web.
There are very few reviews for this servo on the web. A single buyer rating of 5 out of 5 is posted at an electronics retailer, with no written details, and no other owner reports were found. The sample is too small to say how the servo performs for most users.
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