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FrSky BLS5404H
Standard

FrSky BLS5404H

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-24
Identity
Brand FrSky
Product Number 3050629
Category Hobby
Performance
Torque
8.4V 707.00 oz-in
7.0V 655.61 oz-in
6.0V 605.60 oz-in
Speed
8.4V 0.11 sec/60°
7.0V 0.12 sec/60°
6.0V 0.15 sec/60°
Stall Current 6.5–9.1 ABottom 10%
Physical
Weight 2.73 ozBelow Average
Dimensions L 1.575 in
W 0.787 in
H 1.319 in
Case Material Aluminum
Drivetrain
Motor Type Brushless
Gears Metal
Gear Spline/Teeth 25 T
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Mechanical Limit 180°
Pulse Width 760-1520 µs
Neutral Position 760 µs
Refresh Rate 700 Hz
Angle Sensor Hall Effect
Control System FBUS/SBUS/PWM
Programmable Yes
Electrical & Environment
Operating Voltage 4.8–8.4 V
Connectivity
Connector JR (Universal)
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.

Class Comparison

WeightBelow Average
Lighter than 17% of 1872 Digital Standard servos
Stall CurrentBottom 10%
Lower draw than 4% of 569 Digital Standard servos

Performance Analysis

Shaft Power 7.47–11.88 W
Power Density7.269 W/in³
More power-dense than 92% of 1762 Digital Standard servos
Torque Density7.8142 oz-in/g
Torque-to-Volume Ratio370.41 oz-in/in³
Speed-to-Weight0.08602 (1/sec·g)
Speed-Torque Trade-off90.84
Current-per-Torque Ratio0.0150 A/oz-in
Voltage Range Width3.6 V
Wider voltage range than 83% of 1552 Digital Standard servos

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Reviews (6)

Includes 6 reviews aggregated from around the web.

There are few reviews for this servo on the web. A retailer shows six reviews, all five stars. Owners like the solid metal case, power and price, one runs a set in a 122-inch gas aircraft, and one appreciated the spare horn screw included.

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