Stepper motors have several various size, types and electrical characteristics. However, these motors have many advantages and disadvantages, which are: 

Advantages:

• The angle of motor rotation is proportional to the number of input pulses. 
• Stepper motor does not need any feedback. They are also the position transducers. 
• At low-speed stepper motors exerts a very good torque, are excellent for holding position and also likely to have a long lifeline. 
• They can work in AC or DC drives and do not suffer from vibration. 
• Stepper motor has excellent starting stopping or reversing response. 
• The stepper motors do not need a sensor for detecting the positioning of the motor due to internal configurations. Although the motor moves by doing steps and by counting up these steps, at a specified period, the users can get the position of the motor.
• They are very stable and can drive a wide range of frictional and inertial loads. 

Disadvantages: 

• Stepper motor has low torque to inertia ratio and is very noisy at high speeds. 
• Resonance generation can occur in this type of motor if the control is improper. 
• Stepper motor has low power density and has low output power in terms of size and weight. 
• In high-performance configuration the stepper motor becomes hot