The B12 BC Series is available in the standard ATX Form Factor and in wattages that are most common for a PC system. The Seasonic B12 BC achieves 80 PLUS® Bronze standard of providing at least 82 %, 85 % and 82 % power usage efficiency at 20 %, 50 % and 100 % operating loads, respectively. This efficiency, combined with Active Power Factor Correction, enables the B12 BC series power supplies to lessen energy waste, which translates into savings on the costs of energy costs for its users. In addition to being greatly efficient, the B12 BC units utilize the LLC resonant converter design, and the industry’s leading Smart and Silent Fan Control (S2FC).
80 PLUS BRONZE
The 80 PLUS Bronze certification indicates that a high percentage of the electricity is converted into useful power, therefore there is less heat lost and more money saved on the electricity bill.
The 80 PLUS Bronze certificati
    
    
                                
    
                                
    
    
        
        
    
        
            Product number manufacturer:
        
     
    
        B12-BC-550
    
 
    
        
Certificates
    
        
        
            
            
                cTUVus, TUV, CB, CCC, BSMI, CE, FCC             
         
    
        
Connectivity
    
        
            
                
                    
                
                
                    ATX power connector (20+4 pin):
                
             
            
                             
         
        
        
            
                
                    
                
                
                    CPU power connector (4+4 pins):
                
             
            
                             
         
        
        
            
                
                    
                
                
                    Motherboard power connector:
                
             
            
                20+4 pin ATX             
         
        
            
                
                    
                
                
                    PCI Express power connectors (6+2 pin):
                
             
            
                2             
         
        
            
                
                    
                
                
                    PCI Express power connectors (8-pin):
                
             
            
                             
         
        
    
        
Cooling
    
        
        
        
    
        
Energy management
    
        
        
        
        
        
        
        
        
        
            
                
                    
                
                
                    Max output current (+12V):
                
             
            
                45 A             
         
        
            
                
                    
                
                
                    Max output current (+3.3V):
                
             
            
                15 A             
         
        
            
                
                    
                
                
                    Max output current (+5V):
                
             
            
                15 A             
         
        
            
                
                    
                
                
                    Max output current (+5Vsb):
                
             
            
                2.5 A             
         
        
            
                
                    
                
                
                    Max output current (-12V):
                
             
            
                0.3 A             
         
        
            
                
                    
                
                
                    Power protection features:
                
             
            
                Over current, Over power, Over voltage, Short circuit             
         
        
    
        
Environmental conditions
    
        
            
                
                    
                
                
                    Operating temperature range (T-T):
                
             
            
                0 - 50 °C             
         
    
        
Physical characteristics
    
        
        
        
        
    
        
Technical details
    
        
        
            
                
                    
                
                
                    Mean time between failures (MTBF):
                
             
            
                100000 h             
         
        
     
    
                                
    
                                
    
    
        
        
    
        
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