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Theta THM388
Mini

Theta THM388

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-09
Identity
Brand Theta
Product Number TS-THM388-P
Category Hobby
Performance
Torque
8.4V 152.80 oz-in
7.4V 138.90 oz-in
6.6V 125.00 oz-in Above Average
Speed
8.4V 0.07 sec/60°
7.4V 0.08 sec/60°
6.6V 0.09 sec/60° Above Average
Stall Current ≤3 ABelow Average
Physical
Weight 1.62 ozBottom 10%
Dimensions L 1.40 in
W 0.59 in
H 1.22 in
Case Material Aluminum
Drivetrain
Motor Type Brushless
Gears Plastic
Gear Spline/Teeth 25 T
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Pulse Cycle 2.5 ms
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 6.6–8.4 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

TorqueAbove Average
Stronger than 88% of 261 Digital Mini servos at 6.6V
SpeedAbove Average
Faster than 73% of 262 Digital Mini servos at 6.6V
WeightBottom 10%
Lighter than 2% of 463 Digital Mini servos
Stall CurrentBelow Average
Lower draw than 14% of 78 Digital Mini servos

Performance Analysis

Shaft Power 2.57–4.04 W
Power Density4.005 W/in³
More power-dense than 81% of 437 Digital Mini servos
Torque Density2.7174 oz-in/g
Stronger than 61% of 257 Digital Mini servos
Torque-to-Volume Ratio124.04 oz-in/in³
Denser torque than 78% of 261 Digital Mini servos
Speed-to-Weight0.24155 (1/sec·g)
Faster than 24% of 258 Digital Mini servos
Speed-Torque Trade-off11.25
Better balanced than 74% of 260 Digital Mini servos
Current-per-Torque Ratio0.0240 A/oz-in
More efficient than 60% of 51 Digital Mini servos
Torque Gain per Volt12.36%/V
More voltage-responsive (torque) than 20% of 231 Digital Mini servos
Speed Gain per Volt15.87%/V
More voltage-responsive (speed) than 48% of 234 Digital Mini servos
Voltage Range Width1.8 V
Wider voltage range than 48% of 352 Digital Mini servos

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