Discover XQ-Power Servos in Our eBay Store!

Shop Now
Futaba RS303MR
Robotics

Futaba RS303MR

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-09
Identity
Brand Futaba
Product Number 00400020-3
Category Robotics
Performance
Torque
7.4V90.30 oz-in
Speed
7.4V0.11 sec/60°
Running Current
7.4V0.090 A
Physical
Weight 0.99 ozTop 10%
Shape Boxed
Dimensions L 1.41 in
W 0.78 in
H 0.98 in
Drivetrain
Motor Type Coreless
Gears Metal
Rotation Mode Positional
Rotation/Support Dual Bearings
Control & Signal
Direction Bidirectional
Rotational Range 300°
Pulse Width 560-2480 µs
Neutral Position 1520 µs
Control System TTL / PWM
Programmable Yes
Electrical & Environment
Operating Voltage 4.8–7.4 V
Temperature 0–40 °C
Idle Current 0.016 A
Connectivity
Connector Futaba J
Wire Length 300 mm
Baud Rate 230.4 Kbps
Origin
Country of Origin Japan

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

WeightTop 10%
Lighter than 93% of 358 Low Profile servos

Performance Analysis

Shaft Power 1.52 W
Power Density1.408 W/in³
More power-dense than 56% of 207 Futaba servos
Torque Density3.2250 oz-in/g
Torque-to-Volume Ratio83.78 oz-in/in³
Speed-to-Weight0.32468 (1/sec·g)
Speed-Torque Trade-off9.93
Idle-to-Running Current Ratio0.178
Voltage Range Width2.6 V
Wider voltage range than 71% of 158 Futaba servos

Similar Active Servos

Reviews of Futaba RS303MR

Be the first to review!

Submit a review of Futaba RS303MR