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 certification guarantees greater than 82 %, 85 % and 82 % efficiency at 20 %, 50 % and 100% operating loads, respectively. Seasonic’s B12 BC Series is an economical choice with great performance and high built-in value.

Specifications
Cooling
Fan diameter: 12 cm
Number of fans: 1 fan(s)
Fan location: Top
Cooling type: Active
Performance On/off switch: Yes
Power supply unit (PSU) form factor: ATX80 PLUS
certification: 80 PLUS Bronze
Purpose: PC
Mean time between failures (MTBF): 100000 h
Certification: cTUVus, TUV, CB, CCC, BSMI, CE, FCC
Bearing technology: SleeveDesign
80 PLUS certification: 80 PLUS Bronze

Product colour: Black
Cooling type: Active Power
Total power: 650 WAC
input voltage: 100 – 240 VAC
input frequency: 50/60 Hz
Input current: 10 A
Combined power (+3.3V): 100 W
Combined power (+12V): 648 W
Combined power (+5V): 100 W
Combined power (-12V): 3.6 W
Combined power (+5Vsb): 12.5 W
Max output current (+3.3V): 15 A
Max output current (+12V): 54 A
Max output current (+5V): 15 A
Max output current (-12V): 0.3 A
Max output current (+5Vsb): 2.5 A
Power protection features: Over current, Over power, Over voltage, Short circuit
Ports & interfaces
Motherboard power cable length: 55 cm
CPU power cable length: 60 cm
Motherboard power connector: 20+4 pin ATX
Number of SATA power connectors: 6
Peripheral (Molex) power connectors (4-pin): 3
PCI Express power connectors (6+2 pin): 4
CPU power connector (4+4 pin): Yes
PCI Express connector: Yes
ATX power connector (20+4 pin): Yes
Cabling type: Non-Modular
EPS power connector (4+4 pin): Yes
Operational conditions
Operating temperature (T-T): 0 – 50 °C

Weight & dimensions
Width: 150 mm
Depth: 140 mm
Height: 86 mm

Technical details
Sustainability certificates: CE, ENERGY STAR, REACH, RoHS, WEEE

Certificates
80 PLUS certification: 80 PLUS Bronze
Certification: cTUVus, TUV, CB, CCC, BSMI, CE, FCC