Home » Futaba S-A400 S.BUS2 High-Voltage Low-Profile Airplane Servo (01102403-3)
Futaba S-A400 S.BUS2 High-Voltage Low-Profile Airplane Servo (01102403-3)
Futaba S-A400 S.BUS2 High-Voltage Low-Profile Airplane Servo (01102403-3)
Futaba S-A400 digital servo on a white background
Futaba S-A400 S.BUS2 High-Voltage Low-Profile Airplane Servo (01102403-3)
Futaba S-A400 S.BUS2 High-Voltage Low-Profile Airplane Servo (01102403-3)
Futaba S-A400 S.BUS2 High-Voltage Low-Profile Airplane Servo (01102403-3)
Futaba S-A400 digital servo on a white background
Futaba S-A400 S.BUS2 High-Voltage Low-Profile Airplane Servo (01102403-3)
Futaba

Futaba S-A400 S.BUS2 High-Voltage Low-Profile Airplane Servo (01102403-3)

In stock
SKU: 01102403-3
(0)
$159.95

Futaba S-A400 S.BUS2 High-Voltage Low-Profile Airplane Servo

The Futaba S-A400 is a high-voltage, low-profile digital airplane servo designed for installations where reduced servo height is required. Its coreless motor, metal gear train, dual-bearing support, and fast response make it well suited for ailerons and other aircraft control surfaces.

The S-A400 supports conventional PWM operation along with Futaba S.BUS and S.BUS2 systems. Compatible operating parameters can be programmed using supported Futaba transmitters or programming equipment. At 7.4 volts, the servo delivers 111.1 oz-in (8.0 kgf-cm) of of torque with a transit speed of 0.08 second per 60 degrees.

Low-Profile Airplane Design: At only 1.00 in. (25.4 mm) tall, the S-A400 is ideal for wings and other aircraft locations with limited installation depth.

Key Features

  • Low-Profile Construction: Reduced case height makes the servo particularly useful for wing-mounted control surfaces.
  • Coreless Motor: Provides responsive digital control and smooth servo operation.
  • High-Voltage Compatible: Rated for 6.0–7.4V power systems, with an operating range of 4.0–8.4V.
  • S.BUS and S.BUS2 Programmable: Compatible parameters can be adjusted using supported Futaba equipment.
  • Metal Gear Train: Features metal second-through-fourth-stage gears and an aluminum final gear.
  • Dual-Bearing Support: Bearing-supported output construction promotes smooth and consistent operation.
  • Fast Response: Reaches a transit speed of 0.08 sec/60° at 7.4 volts.
  • Lightweight Design: Weighs only 1.62 oz. (46 g).

Recommended Applications

  • Airplane ailerons and wing-mounted control surfaces
  • Pattern and precision aerobatic aircraft
  • Scale and sport aircraft requiring a low-profile servo
  • Space-restricted airplane servo installations
Technical Specifications
Manufacturer Part Number: 01102403-3
Application: RC airplanes
Servo Type: Low-profile digital airplane servo
Motor Type: Coreless
Communication: PWM, S.BUS, and S.BUS2
Rated Voltage: 6.0–7.4V DC
Operating Voltage: 4.0–8.4V DC
Speed at 6.6V: 0.09 sec/60°
Speed at 7.4V: 0.08 sec/60°
Torque at 6.6V: 100.0 oz-in (7.2 kgf-cm)
Torque at 7.4V: 111.1 oz-in (8.0 kgf-cm)
Gear Material: Metal intermediate gears with aluminum final gear
Output Shaft: 6 mm Futaba spline
Dimensions: 1.59 × 0.79 × 1.00 in. (40.5 × 20.0 × 25.4 mm)
Weight: 1.62 oz. (46 g)
Power Notice: Do not use dry-cell batteries to power this servo. Use a properly regulated receiver and servo power system, and confirm that every connected receiver, servo, and accessory supports the selected voltage.
Programming Information: S.BUS programming requires compatible Futaba equipment. Programming interfaces and other accessories are sold separately.

Package Includes

  • 1 × Futaba S-A400 Low-Profile Digital Airplane Servo

Confirm the servo horn and mounting hardware included in your physical package before adding those accessories to the package contents.

The Gator RC Advantage: We stock genuine Futaba servos, receivers, radio systems, and installation accessories. Orders ship quickly from our Illinois warehouse.