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FrSky BLS5403H
Standard

FrSky BLS5403H

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-07-28
Identity
Brand FrSky
Product Number (add)
Category Hobby
Performance
Torque
8.4V 679.22 oz-in
7.0V 597.27 oz-in
6.0V 493.10 oz-in
Speed
8.4V 0.08 sec/60°
7.0V 0.09 sec/60°
6.0V 0.11 sec/60°
Running Current (add)
Stall Current 6.5–9.1 A
Physical
Weight 2.73 oz
Dimensions L 1.58 in
W 0.79 in
H 1.32 in
Case Material Aluminum
Drivetrain
Motor Type Brushless
Motor Drive (add)
Gears Metal
Gear Spline/Teeth 25 T
Shaft Size (add)
Rotation Mode (add)
Rotation/Support Dual Bearings
Backlash (add)
Control & Signal
Modulation (add)
Direction (add)
Rotational Range (add)
Mechanical Limit 180°
Pulse Cycle (add)
Pulse Width (add)
Neutral Position 760 µs
Dead Band (add)
Refresh Rate 700 Hz
Angle Sensor Magnetic Encoder
Control System FBUS
Programmable Yes
Signal Voltage (add)
Electrical & Environment
Operating Voltage 4.8–8.4 V
Power Source (add)
Regulator Type (add)
Temperature (add)
Water Rating (add)
Certification (add)
Idle Current (add)
Connectivity
Connector JR (Universal)
Wire Length (add)
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.

Performance Analysis

Shaft Power 8.29–15.70 W
Torque Density6.3626 oz-in/g
Torque-to-Volume Ratio301.60 oz-in/in³
Power Density9.602 W/in³
More power-dense than 69% of the 40 FrSky servos in the database
Speed-to-Weight0.11730 (1/sec·g)
Speed-Torque Trade-off54.24
Current-per-Torque Ratio0.0185 A/oz-in
Voltage Range Width3.6 V
Wider voltage range than 67% of the 40 FrSky servos in the database

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