The DYS XSD20A is the newest revision of both hardware and software offered. Taking their design from the popular SN20A, DYS focused on many hours of research and development to bring a high end, cost affective, performance oriented ESC to their line up. 

Flashed from the factory with a BLHeli_S Bootloader and firmware, allows for a familiar environment for firmware updates, and quick changes on various settings available. 

The XSD20A is an Opto ESC, which will require an alternate power source to power your flight controller. A list of preferred Power Distribution Boards can be found below: 

• RaceTek Matek 5 in 1 (GCS-FC-066) 
  
• RaceTek (GCS-FC-021)
• RaceTek (GCS-FC-022)

Features: 

• Silabs processor clocked at 50Hz for increased overhead allowing for improved communication with high kV motors 
  
• Ultra-low resistance miniature MOSFET paid with MOS Drive chips for improved efficiency. 
  
• Power Distribution Board (PDB) manufactured with unique copper thickness which provides lower operational temperature, and an increased impact resistance.
• Popular Throttle Signals: PPM,OneShot125, OneShot42, MultiShot , DShot 
  

Specifications: 
Input Voltage: 3-4 cells, 3S-4S LiPo 
Constant Current: 20 Amps 
Burst Current: 25 Amps 
Weight: 4.32g w/ wires 
Dimensions (LxWxH): 24x14x4.5 (board dimensions only) 
Motor Wire: Solder Pad 
Battery Wire: 67mm length, 20awg 
Throttle Wire: 130mm 
BEC: None