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Technical Specifications
Last Updated: 2026-09-14| Identity | |
| Brand |  |
| Product Number | SAV-SC1256TGP |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
277.80 oz-in
20.00 kg-cm
2.0 N-m
4.8V
222.24 oz-in
16.00 kg-cm
1.6 N-m
Average
|
| Speed |
6.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
4.8V
0.18 sec/60°
333.3 deg/s
55.6 RPM
Below Average
|
| Running Current |
6.0V
0.120 A
120 mA
4.8V
0.100 A
100 mA
Top 10%
|
| Stall Current | 4–5 A4000–5000 mABelow Average |
| Physical | |
| Weight | 1.85 oz52.4 gAbove Average |
| Dimensions |
L 1.59 in W 0.80 in H 1.47 in L 40.3 mm W 20.2 mm H 37.2 mm |
| Case Material | Aluminum / Plastic |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Titanium |
| Gear Spline/Teeth | 25 T |
| Shaft Size | 6.0 mm |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 100° |
| Mechanical Limit | 130° |
| Pulse Width | 800-2200 µs |
| Neutral Position | 1500 µs |
| Dead Band | 5 µs |
| Refresh Rate | 360 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| Signal Voltage | 3-5V |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | External |
| Regulator Type | Direct |
| Temperature | -10–50 °C14–122 °F |
| Water Rating | Water Resistant |
| Certification | CE |
| Idle Current | 0.005 A5 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 280 mm11.02 in |
| Origin | |
| Country of Origin | Taiwan |
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 | Average Stronger than 54% of 844 Digital Standard servos at 4.8V |
| Speed | Below Average Faster than 21% of 832 Digital Standard servos at 4.8V |
| Weight | Above Average Lighter than 81% of 1818 Digital Standard servos |
| Running Current | Top 10% Lower draw than 95% of 76 Digital Standard servos at 4.8V |
| Stall Current | Below Average Lower draw than 29% of 403 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.28–3.42 W |
| Power Density | 1.853 W/in³ More power-dense than 42% of 1645 Digital Standard servos |
| Torque Density | 4.2412 oz-in/g Stronger than 66% of 833 Digital Standard servos |
| Torque-to-Volume Ratio | 120.24 oz-in/in³ Denser torque than 53% of 844 Digital Standard servos |
| Speed-to-Weight | 0.10602 (1/sec·g) Faster than 39% of 822 Digital Standard servos |
| Speed-Torque Trade-off | 40.01 Better balanced than 68% of 827 Digital Standard servos |
| Current-per-Torque Ratio | 0.0225 A/oz-in More efficient than 29% of 232 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.050 Lower idle draw than 69% of 27 Digital Standard servos |
| No-Load vs Stall Current Spread | 50.00 Narrower current spread than 35% of 49 Digital Standard servos |
| Torque Gain per Volt | 20.83%/V More voltage-responsive (torque) than 84% of 674 Digital Standard servos |
| Speed Gain per Volt | 16.68%/V More voltage-responsive (speed) than 60% of 688 Digital Standard servos |
| Voltage Range Width | 1.2 V Wider voltage range than 21% of 1271 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0036 Finer dead band than 4% of 329 Digital Standard servos |
Notes
The specs for this surface servo are for the most recent version of this model. The SC1256 and the SC1256TG are it's predecessors. The plus version added Soft Start and Sanwa SSR compatibility.
The servo also has an active identical version for aircraft applications - the SA1256TG+, preceded by the SA1256TG.
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Other Versions
This model has 4 other versions. Only specs that differ are shown.
Reviews (4)
-
Mcduffy
July 28, 2017Application(s): 1/8 buggy steering good only for club race only
Comments: 1/8 buggy steering good only for club race only
SC-1256
April 12, 2015Application(s): RC Nitro Buggy steering, 6V
Comments: Very smooth operation. Speed and strength ratings seem to hold true. Good quality - the house is rugged and the plastic mounting tabs stiff.
Rafas
February 12, 2014Application(s): E used in rudder, elevator and ailerons extra 300 35/45 cc
Comments: Very good eh used more than a year with an extra 300 cc motor 55 on all surfaces and all excellent and with a much lower price
Mike_Andrin
December 28, 2010Application(s): Elevator Servos, 26% Pilot RC, Extra-260, 30CC
Comments: Fast and strong. Excellent quality. Enough torque for the elevators, no pushback is noticed. No complaints at all after 2 months of flying. Was able to pick them up on ebay at a good price. They do make more noise than other servos, after all, they are digital. These and 2 1258s are on the elevators and ailerons on my plane with 1.5 Hangar-9 black arms.