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Technical Specifications
Last Updated: 2026-10-27| Identity | |
| Brand |  |
| Product Number | TP-MG90S |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
30.55 oz-in
2.20 kg-cm
0.2 N-m
4.8V
25.00 oz-in
1.80 kg-cm
0.2 N-m
Below Average
|
| Speed |
6.0V
0.08 sec/60°
750.0 deg/s
125.0 RPM
4.8V
0.10 sec/60°
600.0 deg/s
100.0 RPM
Above Average
|
| Running Current |
5.0V0.200 A200 mA |
| Stall Current | ≤0.7 A≤700 mAAbove Average |
| Physical | |
| Weight | 0.47 oz13.4 gAbove Average |
| Dimensions |
L 0.898 in W 0.48 in H 1.122 in L 22.8 mm W 12.2 mm H 28.5 mm |
| Drivetrain | |
| Motor Type | DC |
| Gears | Metal |
| Gear Spline/Teeth | 20 T |
| Rotation Mode | Positional |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Analog |
| Rotational Range | 180° |
| Pulse Cycle | 20 ms |
| Pulse Width | 1000-2000 µs |
| Neutral Position | 1500 µs |
| Dead Band | 1 µs |
| Refresh Rate | 50 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 4.8–6.6 V |
| Power Source | External |
| Temperature | 0–55 °C32–131 °F |
| Certification | CE | RoHS |
| Idle Current | 0.010 A10 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 250 mm9.84 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 | Below Average Stronger than 15% of 75 Analog Mini servos at 4.8V |
| Speed | Above Average Faster than 85% of 75 Analog Mini servos at 4.8V |
| Weight | Above Average Lighter than 87% of 155 Analog Mini servos |
| Stall Current | Above Average Lower draw than 81% of 27 Analog Mini servos |
Performance Analysis
| Shaft Power | 0.46–0.71 W |
| Power Density | 1.460 W/in³ More power-dense than 91% of 153 Analog Mini servos |
| Torque Density | 1.8657 oz-in/g Stronger than 43% of 75 Analog Mini servos |
| Torque-to-Volume Ratio | 51.69 oz-in/in³ Denser torque than 51% of 75 Analog Mini servos |
| Speed-to-Weight | 0.74627 (1/sec·g) Faster than 84% of 75 Analog Mini servos |
| Speed-Torque Trade-off | 2.50 Better balanced than 16% of 75 Analog Mini servos |
| Current-per-Torque Ratio | 0.0280 A/oz-in More efficient than 58% of 73 Mini servos |
| Idle-to-Running Current Ratio | 0.050 |
| No-Load vs Stall Current Spread | 3.50 |
| Voltage Range Width | 1.8 V 5th-highest voltage range width of 85 Analog Mini servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0010 1st-highest dead-band-to-pulse-width ratio of 20 Analog Mini servos |
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Reviews (16)
Includes 8 reviews aggregated from around the web.
Users find it smoother and fairly quiet for the price and use it in foam planes, small robot arms, camera mounts and model railways. Many say it holds up much better than the SG90 under load. Quality varies widely because of clones, with reports of about 5-15% dead-on-arrival units in some multi-packs, units that run hot or die early, and soft metal gears that still strip. Many cheap units have plastic internal gears with only the output gear in metal, and some owners report wrong screws or loose output shafts. Genuine units and reputable sellers get much better feedback.
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Ulrich
November 24, 2023Application(s): I ordered 18 pieces of this servo for a hexapod walking robot. They were counterfeit, so I ordered another 18 servos and wasted a lot of money.
Comments: Actually I can't tell how the original servo works, as I got counterfeit servos, that were jittering a lot. I researched on this issue and found out, that TowerPro often is vicitm of counterfeit products. On this site they show how to tell counterfeit and original servos apart: https://vorpalrobotics.com/wiki/index.php/Tower_Pro_MG90S_Vs._Clones
Be aware that your electronics dealer asures selling only original parts he receives from the manufacturer!Anon
March 26, 2020Application(s): Arduino Fun with kids / robotics
Comments: To get it to rotate the full 180 degrees I had to experiment a little, here's what worked - in setup use this:
myservo.attach(9,550,1500); //then in loop use the servo.write(n) for degees 0-180Colin Walls
November 30, 2018Application(s): Numerous robotics projects, e.g. pair used for robot claw. Google Sidmouth Robots for more info.
Comments: The genuine ones are brilliant; powerful, consistent and reliable, but this is the most-faked servo ever, so be very sure of your supplier.
Beware Banggood MG90S
October 28, 2018Application(s): I intended servos for T-28 Basic rudder etc.
Comments: In October 2018 I received a Banggood order of 5 servos, all of which are defective. I am guessing the pots are bad as the servos jitter and certain positions and cycle as though there is sand in the gears. I also bought 4 on ebay and one was missing the main bushing on output gear. I cannot comment on reliability.
PeteR
March 19, 2017Application(s): Ailerons,Flaps,Rudder on gliders
Comments: I think tge genuine TowerPro servos are likely very good. However, beware of fakes. I bought 6 of these on eBay for low cost. Whilst they work well enough. The torque seems very low and the first two gears in the train are plastic. Also they are analogue (should be digital). I'm sure they are fake. I got full refund when I challenged the seller. So be aware guys! Buy from reputable vendors only!
kriswithak57
March 6, 2017Application(s): Cyclic on TREX 450 V2
Comments: These servos weigh 13,07grams with horn and wire, the metal gear train is all metal from motor shaft to output for servo horn. All three hold center very well and they are quick.
Sky-high
May 30, 2016Application(s): Swashplate 450 fbl Helicopter
Comments: The servo don't last very long I'm having trouble getting the zero alinement.
MaxQ
November 13, 2015Application(s): Flaps on Phoenix 2000 2M glider
Comments: Considering replacing all servos with these. They're fairly light weight for metal geared servo and perform great - no noise, fast, no complaints so far.