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Technical Specifications
Last Updated: 2026-09-14Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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| 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
|
| 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
|
| Running Current |
6.0V
0.120 A
120 mA
4.8V
0.100 A
100 mA
|
| Stall Current | 4–5 A4000–5000 mA |
| Physical | |
| Weight | 1.85 oz52.4 g |
| 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 |
| Motor Drive | (add) |
| Gears | Titanium |
| Gear Spline/Teeth | 25 T |
| Shaft Size | 6.0 mm |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 100° |
| Mechanical Limit | 130° |
| Pulse Cycle | (add) |
| 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.
Performance Analysis
| Shaft Power | 2.28–3.42 W |
| Torque Density | 4.2412 oz-in/g Stronger than 66% of the 831 Digital Standard servos in the database |
| Torque-to-Volume Ratio | 120.24 oz-in/in³ Denser torque than 53% of the 842 Digital Standard servos in the database |
| Power Density | 1.853 W/in³ More power-dense than 42% of the 1643 Digital Standard servos in the database |
| Speed-to-Weight | 0.10602 (1/sec·g) Faster than 39% of the 820 Digital Standard servos in the database |
| Speed-Torque Trade-off | 40.01 Better balanced than 68% of the 825 Digital Standard servos in the database |
| Current-per-Torque Ratio | 0.0225 A/oz-in More efficient than 29% of the 230 Digital Standard servos in the database |
| Idle-to-Running Current Ratio | 0.050 Lower idle draw than 68% of the 26 Digital Standard servos in the database |
| No-Load vs Stall Current Spread | 50.00 Narrower current spread than 36% of the 48 Digital Standard servos in the database |
| Torque Gain per Volt | 20.83%/V More voltage-responsive (torque) than 84% of the 672 Digital Standard servos in the database |
| Speed Gain per Volt | 16.68%/V More voltage-responsive (speed) than 60% of the 686 Digital Standard servos in the database |
| Voltage Range Width | 1.2 V Wider voltage range than 21% of the 1268 Digital Standard servos in the database |
| Dead-Band-to-Pulse-Width Ratio | 0.0036 Finer dead band than 4% of the 326 Digital Standard servos in the database |
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.
Quick Actions
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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.