Platinum Series
 860 /  1000
   X series
 1050 / 1250
   X series
 Fanless 400 / 460
   X series
 560 / 660 / 760 / 850
   X Series
   G Series 360
   M12II Bronze
 650 / 750 / 850
   M12II Bronze
   S12II Bronze
   PC Power Supply
      OEM Brown Box
   IPC & Server PSU
   Open Frame
 Power Supply

S12D Series
User Manual
  Warranty Card

To offer computer users a more stable and efficient solution to cope with the latest quad core CPU system and power-consuming and high-end computer components, Seasonic now launches the S12D Series that complies with the latest Intel ATX12V and EPS12V specification and available in 750W and 850W


Today, advanced graphic cards are more popular than ever, Seasonic S12D gaming power supplies is capable to deliver with four PCI-E connectors to match NVIDIA or ATI video cards, perfect for personal desktop, high-end gaming applications and for you servers. The S12D Series is equipped with the DC to DC converter design and under ±3% of voltage variation rate. Along with the exceptional reliable 105oC Japanese made Capacitors to bring longer product life length, Seasonic is honored to work with Sanyo Denki for its San Ace Silent Fan to provide absolutely silent operation to your PC.

The S12D Series represents the 'Green PC technology' that helps computer users to save in electricity bill at all times. It achieves the 80PLUS® Silver standard that guarantees an above 85% efficiency rating across 20%, 50% and 100% loading along with a true power factor of >0.9. Moreover, the S12D series is compliant with Energy Star systems and reduces energy consumption under standby, sleep and idle modes. To find out more about 80 PLUS, click here. (

Regarding safety features, the S12D Series is compliant to the directives of ROHS and WEEE standards. It is also regulated with over voltage/under voltage/over current/over power, and short circuit protection to ensure the entire computer system; including peripherals, are well protected. To find out more about RoHS, click here. (

Special Features -

Super High Efficiency [up to 90%]
Green solution for lowering energy consumption, noise & heat.

DC to DC Converter Design
Superior dynamic response & greater system stability.

Practical Dual +12V Rails
Ample 12v output with OCP for extreme utilization.

Tight Voltage Regulation
Improved load regulation to reduce voltage variations.

High Reliable 105°C Japanese Capacitors
Exceptionally reliable components extend product life.

Solid Caps on 12Vs for Extreme Stress Operation Conditions
Great stability at higher operating temperatures, frequencies and currents.

Active Power Factor Correction [99%PF]
Reduces line loss & power distortion.

Dual Sided PCB Layout
Better utilization of PCB space to enhance quality and performance.

San Ace Silent Fan [SANYO DENKI]
Premium quality fan for silent operation.

Smart & Silent Fan Control [ S²FC]
Smart thermal control to balance noise & cooling.
Ultra Ventilation [Honey Comb Structure]
Minimized airflow resistance for maximum cooling.

All in One DC Cabling Design
Supports PC, IPC, workstation, server, & dual CPU systems.

Universal AC Input [Full Range]
Plug & run safely anywhere in the world.

Patented Easy Swap Connector
Unplug the connectors easily & quickly.

5 Year Warranty
Our Commitments to superior quality.


Product Information

1. AC input & DC output voltages ( 100~240V, 50/60Hz )

2. Wire Configuration

3. Total Protection
Over Voltage / Over Power / Short Circuit Protection
Total protection for your power supply, your system and yourself.

4. Operating Environment
Operating temperature: 0 to 50°C. Relative Humidity: 20% to 80%.
(The rated power will reduce from 100% to 80% from 40°C to 50°C)
Relative Humidity: 20% to 80%.

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