The Futaba S-U400 servo is a standard-sized digital high-voltage servo, engineered for use in remote-controlled aircraft and boats. It delivers reliable performance and offers flexible integration into modern control systems thanks to its S.BUS2 compatibility. With its wide operating voltage range, this servo is a versatile component for model builders who demand precise control.

Key Features

• High-Voltage (HV) Capable: Supports an operating voltage from 4.8 V to 8.4 V, allowing flexible configuration and adjustment of torque and speed depending on the receiver battery used.
• S.BUS and S.BUS2 Support: The servo can be directly connected to S.BUS/S.BUS2 systems. This simplifies wiring and enables programming of various servo parameters via a compatible transmitter or a separate programmer.
• Digital Control Electronics: Digital signal processing ensures precise positioning, excellent centering torque, and quick response to control signals from the transmitter.
• Standard Size: Thanks to its standardized dimensions, the servo can be easily installed in a wide range of models designed for servos of this size class.
• Durable Plastic Gear: The plastic gear is designed to meet the demands of general aircraft and boat modeling, offering solid durability for these applications.

Technical Specifications

• Servo Type: Digital
• Operating Voltage: 4.8 V – 8.4 V
• Torque at 6.6 V: 7.1 kg/cm
• Torque at 7.4 V: 8.0 kg/cm
• Speed at 7.4 V: 0.14 s/60°
• Gear Material: Plastic
• Ball Bearings: No
• Compatibility: S.BUS, S.BUS2
• Output Spline: 25 Teeth (25T)
• Dimensions (L x W x H): 40 x 20 x 36.1 mm
• Weight: 40 g

Application

This servo is designed for use as a standard servo in RC aircraft and boat models where reliable control performance is required without extreme loads. It is suitable for a wide range of modelers, from beginners to advanced pilots.