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Digital Servos
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Precision fixed-wing and heli flying requires precise, high-tech servos, and we are answering the call with new digital servos that reach full power immediately. They feature high-capacity, high-current wire for low resistance while maintaining standard servo dimensions and light weight so you can mount them almost anywhere.

Digital servosFind out the advantages now in this informational article available courtesy of Ripmax: Digital FET Servos. The article is a Portable Document Format (PDF) file and can be downloaded to your computer and viewed and/or printed from the free Adobe Reader software. If you do not have the reader program, you may download it from Adobe's Web site: Adobe Reader Download Page.

  
 

Futaba servo dimensions are listed as: Length, width and height, e.g. 1.4 in L x 0.06 in W x 1.1 in H

Tech Notes
   
Mini/Micro
   
S3150 Slim
S3150 Slim
FUTM0303
Volts Torque Speed
4.8V 51 oz-in (3.7 kg/cm) 0.24 sec/60°
6.0V n/a n/a
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Dimensions Weight
1-3/16 x 7/16 x 1-1/8 in
(30 x 11 x 29 mm) 		13/16 oz (23 g)
2BB, MG, 3P

S3153MG Micro
S3153MG Micro
FUTM0652
Volts Torque Speed
4.8V 19 oz-in (1.4 kg/cm) 0.13 sec/60°
6.0V 24 oz-in (1.7 kg/cm) 0.11 sec/60°
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Dimensions Weight
7/8 x 7/16 x 13/16 in
(22 x 11 x 20 mm) 		3/8 oz (11 g)
BB, MG, 3P

S3153 High-Speed Micro Mini
S3153 High Speed Micro Mini Servo
FUTM0653
Volts Torque Speed
4.8V 19.0 oz-in (1.4 kg/cm) 0.12 sec/60°
6.0V 24 oz-in (1.7 kg/cm) 0.10 sec/60°
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Dimensions Weight
7/8 x 7/16 x 13/16 in
(22 x 11 x 20 mm) 		5/16 oz (9.6 g)
BB, 3P

S3154 Digital High-Torque Micro
S3154 Digital High Torque Micro Servo
FUTM0654
Volts Torque Speed
4.8V 21 oz-in (1.5 kg/cm) 0.10 sec/60°
6.0V 24 oz-in (1.7 kg/cm) 0.09 sec/60°
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Dimensions Weight
7/8 x 7/16 x 13/16 in
(22 x 11 x 20 mm) 		1/4 oz (7.9 g)
3P

S3155 High-Speed Slim
S3155 High Speed Slim Servo
FUTM0655
Volts Torque Speed
4.8V 28 oz-in (2.0 kg/cm) 0.16 sec/60°
6.0V n/a n/a
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Dimensions Weight
1-3/16 x 7/16 x 1-1/8 in
(30 x 11 x 29 mm) 		11/16 oz (20 g)
2BB, MG, 3P

S3157 High-Speed/High-Torque Micro
S3157 High-Speed/High-Torque Micro
FUTM0657  
Volts Torque Speed
4.8V 21 oz-in (1.5 kg/cm) 0.10 sec/60°
6.0V 24 oz-in (1.7 kg/cm) 0.09 sec/60°
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Dimensions Weight
7/8 x 7/16 x 7/8 in
(22 x 11 x 23 mm) 		5/16 oz (8.3 g)
3P

S3157M High-Speed/High-Torque Micro with Micro Plug
S3157 High-Speed/High-Torque Micro
FUTM0705  
Volts Torque Speed
4.8V 21 oz-in (1.5 kg/cm) 0.10 sec/60°
6.0V 24 oz-in (1.7 kg/cm) 0.09 sec/60°
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Dimensions Weight
7/8 x 7/16 x 7/8 in
(22 x 11 x 23 mm) 		1/4 oz (7.8 g)
3P

S9650 Mini
S9650 Mini
FUTM0260
Volts Torque Speed
4.8V 50 oz-in (3.6 kg/cm) 0.14 sec/60°
6.0V 63 oz-in (4.5 kg/cm) 0.11 sec/60°
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Dimensions Weight
1-7/16 x 9/16 x 1-1/8 in
(36 x 15 x 29 mm) 		15/16 oz (26 g)
2BB, CM

S3156MG Micro High-Torque
S3156MG Micro High Torque
FUTM0656
Volts Torque Speed
4.8V 28.0 oz-in (2.0 kg/cm) 0.13 sec/60°
6.0V 33.0 oz-in (2.4 kg/cm) 0.11 sec/60°
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Dimensions Weight
7/8 x 7/16 x 7/8 in.
(22 x 11 x 22 mm)		 0.3 oz (9.3g)
BB, MG, 3P

 
   
Standard
   
S3050 Standard High-Torque
S3050 Standard High Torque
FUTM0300
Volts Torque Speed
4.8V 72.0 oz-in (5.2 kg/cm) 0.20 sec/60°
6.0V 90 oz-in (6.5 kg/cm) 0.16 sec/60°
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Dimensions Weight
1-9/16 x 13/16 x 1-1/2 in
(40 x 20 x 38 mm) 		1-3/4 oz (49 g)
2BB, MG, 3P

S3051HV High-Torque
S3051HV High-Torque
FUTM0715
Volts Torque Speed
6.0V 138 oz-in (10.0 kg/cm) 0.21 sec/60°
7.4V 146 oz-in (10.5 kg/cm) 0.17 sec/60°
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Dimensions Weight
1-1/8 x 1/2 x 1-3/16 in
(28 x 13 x 30 mm)		 1.7 oz (49 g)
HV
2BB

S3151 Sport
S3151 Sport
FUTM0310
Volts Torque Speed
4.8V 43 oz-in (3.1 kg/cm ) 0.21 sec/60°
6.0V n/a n/a
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Dimensions Weight
1-5/8 x 13/16 x 1-7/16 in
(41 x 20 x 36 mm) 		1-1/2 oz (42 g)
BB, 3P

S3152 Standard High-Torque
S3152 Standard High-Torque
FUTM0311
Volts Torque Speed
4.8V 69 oz-in (5.0 kg/cm) 0.22 sec/60°
6.0V 88 oz-in (6.3 kg/cm) 0.18 sec/60°
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Dimensions Weight
1-9/16 x 13/16 x 1-1/2 in
(40 x 20 x 38 mm)		 1-7/16 oz (41 g)
BB, 3P

S9151 Rudder
S9151 Rudder
FUTM0211
Volts Torque Speed
4.8V 132 oz-in (9.5 kg/cm) 0.19 sec/60°
6.0V n/a n/a
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		1-3/4 oz (50 g)
2BB, WP, CM

S9155 Digital High-Torque Airplane
S9255 Heli
FUTM0215
Volts Torque Speed
4.8V 153 oz-in (11.0 kg/cm) 0.16 sec/60°
6.0V 192 oz-in (13.8 kg/cm) 0.13 sec/60°
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		2-1/8 oz (61 g)
2BB, MG, WP, CM, MCC

S9156 Heavy-Duty High-Torque
S9156 Heavy-Duty High-Torque Servo
FUTM0216
Volts Torque Speed
4.8V 272 oz-in (19.6 kg/cm) 0.21 sec/60°
6.0V 340 oz-in (24.5 kg/cm) 0.17 sec/60°
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		2-1/4 oz (63 g)
2BB, MG, WP, CM, MCC

S9252 All-Purpose
S9252 All-Purpose
FUTM0222
Volts Torque Speed
4.8V 92 oz-in (6.6 kg/cm) 0.14 sec/60°
6.0V n/a n/a
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		1-3/4 oz (50 g)
2BB, MG, WP, CM

S9350 High-Torque
S9350 High Torque
FUTM0235
Volts Torque Speed
4.8V 111 oz-in (8.0 kg/cm) 0.15 sec/60°
6.0V 139 oz-in (10.0 kg/cm) 0.12 sec/60°
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		2-1/8 oz (61 g)
2BB, MG, WP, CM, MCC

S9351 High-Torque
S9351 High Torque
FUTM0236
Volts Torque Speed
4.8V 153 oz-in (11.0 kg/cm) 0.16 sec/60°
6.0V 192 oz-in (13.8 kg/cm) 0.13 sec/60°
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		2-1/8 oz (61 g)
2BB, MG, WP, CM, MCC

S9352HV High Voltage HT HS
S9352HV High Voltage HT HS
FUTM0720
Volts Torque Speed
6.0V 272 oz-in (19.6 kg/cm) 0.08 sec/60°
7.4V 306 oz-in (22.0 kg/cm) 0.06 sec/60°
Dimensions Weight
1-5/8 x 13/16 x 1-1/2 in (
41 x 21 x 37 mm)		 2.8 oz (79 g)
HV
2BB, TG, WP, CM, MCC
 

S9353HV High Voltage HT HS Servo
S9353HV High Voltage HT HS Servo
FUTM0721
Volts Torque Speed
6.0V 272 oz-in (19.6 kg/cm) 0.08 sec/60°
7.4V 306 oz-in (22.0 kg/cm) 0.06 sec/60°
Dimensions Weight
1-5/8 x 13/16 x 1-1/2 in (
41 x 21 x 37 mm)		 2.7 oz (77 g)
HV
2BB, TG, WP, CM, FMC

   
Large/Specialty
   
S3170G Digital Planetary Gear Retract
S3170G Digital Planetary Gear Retract
FUTM0671  
Volts Torque Speed
4.8V 94 oz-in (7.0 kg/cm) 0.57 sec/60°
6.0V 118 oz-in (8.5 kg/cm) 0.47 sec/60°
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Dimensions Weight
1-3/8 x 5/8 x 1.0 in
(35 x 16 x 26 mm ) 		15/16 oz (26 g)
2BB, MG, 3P

S9152 Mega High-Torque
S9152 Mega High Torque
FUTM0212
Volts Torque Speed
4.8V 222 oz-in (16.0 kg/cm) 0.23 sec/60°
6.0V 278 oz-in (20.0 kg/cm) 0.19 sec/60°
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Dimensions Weight
1-15/16 x 1 x 1-9/16 in
(49 x 25 x 40 mm) 		3 oz (85 g)
2BB, MG, WP, CM, MCC

S9154 High-Speed Aileron
S9154 High Speed Aileron
FUTM0214
Volts Torque Speed
4.8V 64.0 oz-in (4.6 kg/cm) 0.14 sec/60°
6.0V n/a n/a
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Dimensions Weight
1-7/8 x 1-1/16 x 1 in
(48 x 27 x 25 mm) 		1-7/8 oz (53 g)
2BB, WP, CM

S9254 Heli High-Torque/High-Speed
S9254 Heli High Torque/High Speed
FUTM0224
Volts Torque Speed
4.8V 47 oz-in (3.4 kg/cm) 0.06 sec/60°
6.0V n/a n/a
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		1-3/4 oz (49 g)
2BB, WP, CM

S9157 High-Torque Servo
S9157 High-Torque Servo
FUTM0217  
Volts Torque Speed
4.8V n/a n/a
6.0V 425 oz-in (30.6 kg/cm) 0.14 sec/60°
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Dimensions Weight
1-5/8 x 13/16 x 1-7/16 in
(41 x 21 x 37 mm)		 2.5 oz (71 g)
2BB, MG, WP, CM, MCC

S9255 Heli High-Torque/High-Speed
S9255 Heli High Torque/High Speed
FUTM0225
Volts Torque Speed
4.8V 125 oz-in (9.0 kg/cm) 0.16 sec/60°
6.0V n/a n/a
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm)		 1-15/16 oz (55 g)
2BB, MG, WP, CM

S9452 High-Speed High-Torque (Replaces S9451)
S9452 High Speed High Torque
FUTM0662  
Volts Torque Speed
4.8V 102.4 oz-in (7.4 kg/cm) 0.13 sec/60°
6.0V 128.0 oz-in (9.2 kg/cm) 0.11 sec/60°
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Dimensions Weight
1-9/16 x 13/16 x 1-5/16 in
(40 x 20 x 34 mm) 		1-3/4 oz (50 g)
2BB, MG, WP, CM

S9153 High-Speed/High-Torque
S9153 High Speed/High Torque
FUTM0213
Volts Torque Speed
4.8V 167 oz-in (12.0 kg/cm) 0.18 sec/60°
6.0V 208 oz-in (15.0 kg/cm) 0.15 sec/60°
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Dimensions Weight
1-15/16 x 1 x 1-9/16 in
(49 x 25 x 40 mm) 		3 oz (85 g)
2BB, MG, WP, CM, MCC

S9256 Heli High-Speed for GY601/GY611 Gyro
S9256
FUTM0226
Volts Torque Speed
4.8V 47 oz-in (3.4 kg/cm) 0.06 sec/60°
6.0V n/a n/a
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		2 oz (57 g)
2BB, MG, WP, CM, MCC

S9257 Rudder Servo for EP Helis
S9257 Rudder Servo for EP Helis
FUTM0667
Volts Torque Speed
4.8V 28 oz-in (2.0 kg/cm) 0.08 sec/60°
6.0V n/a n/a
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Dimensions Weight
1-7/16 x 9/16 x 1-1/8 in
(36 x 15 x 29 mm) 		15/16 oz (26 g )
2BB, CM

S9551 Low-Profile (Replaces S9550)
S9551 Low Profile
FUTM0661  
Volts Torque Speed
4.8V 98 oz-in (7.0 kg/cm) 0.14 sec/60°
6.0V 122 oz-in (8.8 kg/cm) 0.11 sec/60°
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Dimensions Weight
1-5/8 x 13/16 x 1 in
(41 x 20 x 25 mm) 		1-9/16 oz (45 g)
2BB, MG, WP, CM

 
  

BB = Ball Bearing • MG = Metal Gear • TG = Titanium Gear • WP = Water Protected • CM = Coreless Motor
3P = 3-pole Motor • 5P = 5-pole motor • MCC = Metal Center Case

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