A4040 MT/HS Micro Metal Gear High Voltage Servo (SPMSA4040)

Introducing the A4040 HV micro metal gear servo, a compact high‑voltage digital servo designed for park flyer and small sport aircraft. It operates from 4.8 to 8.4 volts and delivers up to 7.0 kg‑cm (96 oz‑in) of torque with a fast 0.094‑second response per 60° at 8.4V, making it ideal for precise control on tight airframes.

Built with an all‑metal gear train and bearing‑supported drivetrain for smooth, durable operation, this micro servo features an aluminum center‑section case for efficient heat dissipation, a coreless motor, and low deadband with high resolution. It runs at a 200–333 Hz update frequency and includes over‑current and temperature protection, making it well suited to park flyers in the 15–25 size range and other specialty aircraft that demand reliable, high‑performance control.