Servo Specs, Reviews, & Comparison Tool
Blue Arrow S0901 - Micro Servo
Specifications
| Last Updated: | 2025-08-04 |
| Modulation: | Analog |
| Torque: |
4.8V: 25.00 oz-in (1.80 kg-cm) |
| Speed: |
4.8V: 0.12 sec/60° |
| Weight: | 0.37 oz (10.5 g) |
| Dimensions: |
Length:0.98 in (24.9 mm) Width:0.46 in (11.7 mm) Height:0.87 in (22.1 mm) |
| Motor Type: | (add) |
| Gear Type: | Plastic |
| Rotation/Support: | Bushing |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
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Notes
- The discontinued Blue Arrow S0901 is, without exaggeration, a true icon in the RC hobby. As a classic 9-gram analog sub-micro servo, it occupies what is arguably the most popular and versatile servo size class in the world. It is the go-to, default choice for a massive and diverse range of applications, including almost all park flyers, small electric gliders, the cyclic controls on 450-class helicopters, and countless scratch-built projects of every imaginable type. For many hobbyists, the S0901 (and its many derivatives) is simply what they picture in their mind when they think of a "standard" small servo. Its ubiquity is a testament to its incredible blend of performance, size, and value.
- Its enduring fame comes from its universal utility, its proven reliability, and its unbeatable cost-effectiveness. It is the benchmark against which countless other servos are measured. While it may not be the fastest or the strongest servo available, it is more than capable for the vast majority of applications, and it performs its job with a level of consistency and dependability that has earned the trust of millions of modelers. It is often the servo that comes included in popular aircraft kits, and it is the component that hobbyists keep on hand in their workshop for any new project that comes along.
- For any roboticist, from a curious beginner to a seasoned professional, the S0901 is an absolutely essential component. Its low cost, predictable analog performance, and standard dimensions make it perfect for prototyping new ideas, for use in educational kits and classrooms, and for the final build of many different types of small robots. It is the fundamental building block for countless robotics projects, from simple pan-and-tilt systems to the articulated limbs of small walking robots.
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