G-550

Our G-series product line has become extremely popular amongst a wide range of users ranging from small to medium sized system integrators to gamers and enthusiasts. These customers are looking for highly reliable power supplies with lower power outputs that provide the essential core features at a competitive price. The G-550 uses high quality components paired with Sea Sonic’s S2FC fan control and boasts the same top reliability and performance that you would find in all Seasonic power supplies.

SKU: SSR-550RM Active PFC Categories: Consumer Products, G-Series

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Fluid Dyanamic Fan Bearing

High performance Fluid Dynamic Bearing (FDB) fans are designed to take advantage of the impact absorbance effects of oil. They are extremely reliable and generate considerably less operating noise and heat than ball bearing fans. The lubrication of the bearing surface reduces friction and vibration and therefore lowers overall power consumption. Due to the effortless, quieter rotations and its robust construction, this reliable fan technology also greatly increases the lifespan of the fan.

How it works

When the fan shaft rotates, high pressure oil drifts along the grooves of the bearing sleeve to generate a thin layer of lubrication between the bearing faces. As the speed increases, so does dynamic oil pressure and the shaft is lifted from the bearing to create smooth, effortless rotations. The herringbone shape of the groves helps to efficiently channel the lubricant and avert leakage.
The following illustration depicts the main characteristics of the FDB fans:

S²FC

The intelligent thermal circuit feature is designed to find the optimal balance between the necessity to cool the components and the need to run the power supply in the most silent manner possible.

80 PLUS^®Gold

Seasonic was the forerunner of creating the very first 80 PLUS^® Gold certified power supply on the market and since that time it has built a very popular Gold series lineup that covers a full power range of power supplies with impeccable performance and efficiency. The highly efficient 80 PLUS^® Gold certification guarantees greater than 87 %, 90 % and 87 % efficiency at 20 %, 50 % and 100 % operating loads, respectively. The clear advantage of buying a power supply with 80 PLUS^® Gold rating is the fact that the less energy gets wasted during power conversion, the lower the operating costs will be for the user.

Ample +12 V Output

Enhanced +12 V current capability broadens utilization possibilities.

DC to DC Converter Design

The step down DC to DC converter design allows the power supply to be able to serve system components with various voltage needs. Not only is it a flexible, clean voltage conversion solution but it also maximizes the 12 V DC rail output, delivers superior dynamic response and , ultimately, provides for greater system stability.

5 Years Warranty

Our commitment to superior Seasonic quality.

Specifications are subject to change without prior notice.

G-550
AC Input	Voltage: 100 V - 240 V
	Current: 7 - 3.5 A
	Frequency: 50 Hz - 60 Hz
DC Output	Rail	+3.3 V	+5 V	+12 V	-12 V	+5 VSB
	Maximum Power	20 A	20 A	45 A	0.3 A	2.5 A
	Maximum Power	100 W		540 W	3.6 W	12.5 W
	Total continuous power	550 W

G-550 Technical Specifications
80PLUS^®		Gold
Form Factor		Intel ATX 12 V
Dimensions		150 mm (W) x 160 mm (L) x 86 mm (H)
Fan Information	Fan Size	120 mm
	Fan Control	Seasonic S²FC
	Fan Bearing	Fluid Dynamic Bearing
	Life Expectancy	50,000 at 40 °C, 15 % - 65 % R.H.
Cable Information	Modularity	Semi Modular
Cable Information	Cable type	Flat black cables
Electrical Features	Operating Temperature	40 °C
	MTBF @ 25 °C, excl. fan	150,000 hours
	AC Input	Full Range
	Protection	OPP, OVP, UVP, OCP, OTP, SCP
Safety and Environmental	Safety and EMC	cTUVus, TUV, CB, EAC, C-tick, BSMI, CE, FCC, CCC
Safety and Environmental	Environmental Compliance	Energy Star, RoHS, WEEE, ErP Lot 6, REACH
Warranty		5 Years

Packaging information
Units per carton	5
Individual carton size	310 (L) x 115 (W) x 180 (H) mm
Shipping carton size	596 (L) x 198 (W) x 335 (H) mm

Specifications are subject to change without prior notice.

Connector	Connector Count	Lengths
	1	550 mm - attached
	1	550 mm - attached
	2	600 mm - modular 600 mm - modular
	6	400 + 120 + 120 + 120 mm - modular 300 + 120 mm - modular
	5	400 + 120 + 120 mm 300 + 120 mm
	1	101 mm