Futaba S3157 Micro Digital Servo 1.7kg/0.09s 4.8V - 6V

The Futaba S3157 Micro Digital Servo is a high-speed, precision actuator designed specifically for weight-sensitive applications like small electric-powered aircraft and park flyers. Despite its diminutive size—weighing only 8.3g—this digital servo delivers a lightning-fast response and high holding power, making it a favorite for pilots who demand precise control for 3D acrobatics or complex mechanical linkages in compact models.

Key Features:

• Digital Accuracy: Digital circuitry ensures faster processing and higher centering precision compared to analog micro servos, providing a "locked-in" feel during flight.
• High-Speed Transit: Capable of 0.09s/60° at 6.0V, making it exceptionally responsive for cyclic controls or fast tail corrections.
• Compact Footprint: Specifically engineered for narrow fuselages and thin wings where every millimeter of space is critical.
• Durable Resin Gears: Optimized for strength-to-weight ratio; however, these are precision gears designed for electric flight (avoid high-shock gas engines).
• Universal Compatibility: Uses a standard PWM signal and a 25T (4mm) spline, fitting most micro receivers without needing adapters.

Technical Specifications:

Usage Precautions:

The S3157 is a high-precision instrument intended for small electric models. Do not use this servo with gas-powered engine models or large gliders, as the high vibration and excessive torque requirements can damage the ultra-miniature gears. Additionally, ensure your BEC can handle the current draw of digital servos if you are running multiple S3157s simultaneously.