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Theta THL398
Standard

Theta THL398

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-10
Identity
Brand Theta
Product Number TS-THL398
Category Hobby
Performance
Torque
8.4V 416.60 oz-in
7.4V 375.00 oz-in
6.0V 319.40 oz-in
5.0V 277.70 oz-in Average
Speed
8.4V 0.10 sec/60°
7.4V 0.11 sec/60°
6.0V 0.12 sec/60°
5.0V 0.13 sec/60° Average
Stall Current ≤3 AAverage
Physical
Weight 2.57 ozBelow Average
Dimensions L 1.57 in
W 0.79 in
H 1.50 in
Case Material Plastic
Drivetrain
Motor Type Brushless
Gears Metal
Gear Spline/Teeth 25 T
Rotation Mode Standard
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Pulse Width 500-2500 µs
Neutral Position 1520 µs
Refresh Rate 400 Hz
Angle Sensor Magnetic Encoder
Control System PWM
Programmable No
Electrical & Environment
Operating Voltage 5–8.4 V
Connectivity
Connector JR (Universal) estimate
Wire Length 300 mm

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

TorqueAverage
Stronger than 62% of 1041 Digital Standard servos at 5.0V
SpeedAverage
Faster than 52% of 1038 Digital Standard servos at 5.0V
WeightBelow Average
Lighter than 24% of 1903 Digital Standard servos
Stall CurrentAverage
Lower draw than 54% of 540 Digital Standard servos

Performance Analysis

Torque Density3.8041 oz-in/g
Stronger than 55% of 1034 Digital Standard servos
Torque-to-Volume Ratio149.27 oz-in/in³
Denser torque than 63% of 1040 Digital Standard servos
Speed-to-Weight0.10537 (1/sec·g)
Faster than 39% of 1030 Digital Standard servos
Speed-Torque Trade-off36.10
Better balanced than 60% of 1029 Digital Standard servos
Current-per-Torque Ratio0.0108 A/oz-in
More efficient than 74% of 316 Digital Standard servos
Torque Gain per Volt14.71%/V
More voltage-responsive (torque) than 42% of 845 Digital Standard servos
Speed Gain per Volt8.83%/V
More voltage-responsive (speed) than 11% of 866 Digital Standard servos
Voltage Range Width3.4 V
Wider voltage range than 70% of 1540 Digital Standard servos

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