CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
Seasonic Focus GX-850 (ATX v3.1)
Serial Number
Lab IDSS85002573
  • Report: 24PS2572A
  • Receipt Date: Sep 4, 2024
  • Test Date: Sep 19, 2024
  • Report Date: Sep 20, 2024
115V230V
Efficiency Rating
115V230V
Noise Rating
Aristeidis Bitziopoulos, Laboratory General Manager

General Information

DUT Information

BrandSeasonic
Manufacturer (OEM)Seasonic
SeriesFocus GX
Model NumberSRP-FGX851-A5A32SF
Serial Number
DUT Notes

DUT Specifications

Rated Voltage (Vrms)100-240
Rated Current (Arms)11-5.5
Rated Frequency (Hz)50-60
Rated Power (W)850
TypeATX12V
Cooling135mm Fluid Dynamic Bearing Fan (HA13525H12F-Z)
Semi-Passive Operation✓ (selectable)
Cable DesignFully Modular

Power Specifications

Rail 3.3V 5V 12V 5VSB -12V
Max. Power Amps 20 20 70 3 0.3
Watts 100 840 15 3.6
Total Max. Power (W) 850

Test Equipment

Electronic Loads

Chroma 63601-5 x2
Chroma 63600-2
63640-80-80 x10
63610-80-20
AC Sources Chroma 6530, APM SP300VAC4000W-P
Power Analyzers RS HMC8015, N4L PPA1530, N4L PPA5530
Oscilloscopes Picoscope 4444, Rigol DS7014, Siglent SDS2104X PLUS
Sound Analyzer Bruel & Kjaer 2270 G4
Microphone Bruel & Kjaer Type 4955-A
Temperature Logger Picoscope TC-08
Tachometer UNI-T UT372
Multimeters Keysight 34465A, Keithley 2015 - THD
UPS FSP Champ Tower 3kVA, CyberPower OLS3000E 3kVA
Isolation Transformer 4kVA
Testing Methodology Cybenetics PSU Test Protocol

Cables and Connectors

Modular Cables
Description Cable Count Connector Count (Total) Gauge In Cable Capacitors
ATX connector 20+4 pin (610mm) 1 1 16-18AWG No
4+4 pin EPS12V (750mm) 2 2 16AWG No
6+2 pin PCIe (750mm) 3 3 16-18AWG No
12+4 pin PCIe (700mm) (600W) 1 1 16-24AWG No
SATA (500mm+150mm+150mm+150mm) 2 8 18AWG No
4-pin Molex (450mm+120mm+120mm) 1 3 18AWG No

Parts Description

General Data
Manufacturer (OEM) Seasonic
PCB Type Double-Sided
Primary Side
Transient Filter 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV
Inrush Protection 1x NTC Thermistor MF72 5D-20L (5 ohm) & Relay
Bridge Rectifier(s)
2x GBU1508 (800V, 15A @ 40°C)
APFC MOSFETs
2x Alpha & Omega AOB160A60L (600V, 15A @ 100°C, Rds(on): 0.16Ohm)
APFC Boost Diode
1x Infineon IDK08G65C5 (650V, 8A @ 145°C)
Bulk Cap(s)
1x Nippon Chemi-con (400V, 680uF, 2,000h @ 105°C, KMR)
Main Switchers
4x Alpha & Omega AOB280A60C (600V, 9A @ 100°C, Rds(on): 0.28Ohm)
Resonant Controller
Champion CU6901VPA
APFC Controller
Champion CM6500UNX
Topology
Primary side: APFC, Full-Bridge & LLC converter
Secondary side: Synchronous Rectification & DC-DC converters
Secondary Side
+12V MOSFETs 4x Nexperia PSMN1R4-40YLD (40V, 214A @ 100°C, Rds(on): 1.4mOhm)
5V & 3.3V DC-DC Converters:  6x Nexperia PSMN4R0_30YLD   (30V, 95A @ 100°C, Rds(on): 4mOhm)
PWM Controller(s): Anpec APW7159C
Filtering Capacitors

Electrolytic:
3x Nichicon (2-5,000h @ 105°C, HD),
1x Nippon Chemi-Con (1-5,000h @ 105°C, KZE),
5x Rubycon (3-6,000h @ 105°C, YXG)
2x Rubycon (6-10,000h @ 105°C, ZLH)
Polymer: 5x Nippon Chemi-Con, 18x FPCAP
Supervisor IC Weltrend WT7527RA (OVP, UVP, OCP, SCP, PG)
Fan Controller Nuvoton M031FB0AE
Fan Model Hong Hua HA13525H12F-Z (135mm, 12V, 0.50A, Fluid Dynamic Bearing Fan)
5VSB
Rectifier
DK DK5V45R10S (45v, 10mOhm)
Standby PWM Controller
Excelliance MOS EM8569C

Test Results

Temperature & Compliance Info

Temperature Range (°C /°F)30-32 / 86-89.6
ErP Lot 3/6 Ready✓
(EU) No 617/2013 Compliance✓
ALPM (Alternative Low Power Mode) compatible✓
ATX v3.1 PSU Power Excursion✓

Performance Summary

Hold-Up Time & Power Ok Signal

Hold-Up Time (ms)

23.2

AC Loss to PWR_OK Hold Up Time  (ms)

18.3

PWR_OK Inactive to DC Loss Delay (ms)

4.9

Vampire Power

Tables

Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 114.88 V 114.83 V 113.85 V 114.94 V 116.15 V PASS
Mains Frequency: 60.00 Hz 59.98 Hz 59.40 Hz 60.01 Hz 60.60 Hz PASS
Mains Voltage CF: 1.419 1.416 1.340 1.422 1.490 PASS
Mains Voltage THD: 0.15 % 0.09 % N/A 0.28 % 2.00 % PASS
Real Power: 0.073 W 0.060 W N/A 0.086 W N/A N/A
Apparent Power: 10.433 W 10.416 W N/A 10.455 W N/A N/A
Power Factor: 0.007 N/A N/A N/A N/A N/A
Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 229.94 V 229.88 V 227.70 V 230.01 V 232.30 V PASS
Mains Frequency: 50.00 Hz 49.99 Hz 49.50 Hz 50.01 Hz 50.50 Hz PASS
Mains Voltage CF: 1.417 1.415 1.340 1.418 1.490 PASS
Mains Voltage THD: 0.13 % 0.08 % N/A 0.19 % 2.00 % PASS
Real Power: 0.170 W 0.142 W N/A 0.205 W N/A N/A
Apparent Power: 35.157 W 35.132 W N/A 35.190 W N/A N/A
Power Factor: 0.005 N/A N/A N/A N/A N/A

Efficiency Graph

INFO

This graph depicts the PSU`s efficiency throughout its entire operational range. For the generation of the efficiency and noise graphs we set our loaders to auto mode through our custom-made software before trying thousands of possible load combinations

INFO

This graph depicts the PSU`s efficiency throughout its entire operational range. For the generation of the efficiency and noise graphs we set our loaders to auto mode through our custom-made software before trying thousands of possible load combinations

Noise Graph

INFO

The PSU`s noise in its entire operational range and under 30-32 °C ambient is depicted in this graph. The X axis represents the load on the +12V rail(s) while the Y axis is the load on the minor rails

INFO

The PSU`s noise in its entire operational range and under 30-32 °C ambient is depicted in this graph. The X axis represents the load on the +12V rail(s) while the Y axis is the load on the minor rails

Indicative Performance

Efficiency under high ambient temperature

INFO

The PSU`s efficiency under high ambient temperatures with 115V and 230V input. For this graph the results of the 10-110% load regulation table are used

5VSB Efficiency

INFO

This graph depicts the efficiency levels of the 5VSB rail with 115V and 230V input

5VSB Efficiency (ERP LOT 3/6 & CEC)

Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.228W 65.63% 0.033
5.06V 0.348W 114.86V
2 0.09A 0.455W 72.642% 0.059
5.059V 0.626W 114.88V
3 0.55A 2.771W 81.564% 0.256
5.039V 3.397W 114.86V
4 1A 5.019W 81.568% 0.357
5.019V 6.153W 114.86V
5 1.5A 7.496W 81.558% 0.409
4.997V 9.191W 114.86V
6 3A 14.794W 79.394% 0.486
4.931V 18.633W 114.86V
Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.228W 50.391% 0.013
5.061V 0.453W 229.94V
2 0.09A 0.455W 61.513% 0.021
5.059V 0.74W 229.96V
3 0.55A 2.771W 78.582% 0.096
5.038V 3.526W 229.94V
4 1A 5.019W 80.596% 0.159
5.019V 6.227W 229.94V
5 1.5A 7.495W 81.032% 0.212
4.997V 9.249W 229.93V
6 3A 14.792W 80.339% 0.322
4.931V 18.412W 229.93V

Supplementary Tests (For Reference)

Typical Load Tests

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 5.276A 1.994A 1.981A 0.998A 85.006 86.484% 0 <6.0 49.83°C 0.952
12.017V 5.016V 3.331V 5.01V 98.29 40.1°C 114.84V
20% 11.598A 2.992A 2.975A 1.202A 169.948 90.777% 0 <6.0 53.82°C 0.969
11.989V 5.014V 3.328V 4.994V 187.214 40.89°C 114.81V
30% 18.263A 3.492A 3.474A 1.406A 254.943 91.15% 940 26.9 41.14°C 0.978
11.985V 5.012V 3.325V 4.978V 279.697 46.11°C 114.79V
40% 24.936A 3.993A 3.974A 1.612A 340.027 91.212% 936 26.7 41.83°C 0.982
11.983V 5.009V 3.321V 4.963V 372.789 47.2°C 114.75V
50% 31.235A 4.994A 4.973A 1.82A 424.836 90.805% 924 26.4 42.15°C 0.984
11.984V 5.007V 3.318V 4.947V 467.858 48.17°C 114.73V
60% 37.507A 5.995A 5.973A 2A 509.222 90.227% 915 26 42.8°C 0.986
11.985V 5.005V 3.315V 4.931V 564.381 50.39°C 114.7V
70% 43.838A 6.997A 6.976A 2.239A 594.647 89.464% 985 28.7 43.06°C 0.988
11.988V 5.003V 3.312V 4.913V 664.675 51.77°C 114.66V
80% 50.170A 7.999A 7.979A 2.347A 679.493 88.616% 1061 30.9 43.73°C 0.99
11.991V 5V 3.308V 4.9V 766.783 53.57°C 114.64V
90% 56.899A 8.502A 8.471A 2.456A 764.96 87.736% 1140 32.9 44.52°C 0.992
11.994V 4.998V 3.305V 4.887V 871.886 55.66°C 114.6V
100% 63.357A 9.006A 8.993A 3.093A 849.772 86.746% 1545 42 45.29°C 0.993
11.996V 4.997V 3.302V 4.85V 979.623 56.76°C 114.57V
110% 69.690A 10.011A 10.093A 3.098A 934.331 85.685% 1847 51.2 46.09°C 0.994
11.997V 4.994V 3.299V 4.842V 1090.414 57.42°C 114.53V
CL1 0.116A 12.021A 11.944A 0A 101.292 83.686% 944 27 40.17°C 0.959
12.029V 5.008V 3.324V 5.045V 121.038 48.78°C 114.83V
CL2 0.115A 19.975A 0A 0A 101.369 82.716% 942 26.9 40.73°C 0.959
12.025V 5.005V 3.335V 5.05V 122.55 47.3°C 114.84V
CL3 0.115A 0A 19.882A 0A 67.38 76.603% 947 27.1 40.89°C 0.947
12.020V 5.018V 3.319V 5.046V 87.962 45.96°C 114.85V
CL4 70.853A 0A 0A 0A 849.491 87.534% 1334 37.4 45.15°C 0.992
11.990V 5.007V 3.312V 5.003V 970.473 55.04°C 114.58V

The results above are not used in the certification process

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 5.274A 1.993A 1.981A 0.998A 85 87.52% 0 <6.0 50.39°C 0.827
12.021V 5.017V 3.331V 5.01V 97.119 40.12°C 229.92V
20% 11.593A 2.991A 2.974A 1.201A 169.927 92.169% 0 <6.0 52.85°C 0.916
11.992V 5.014V 3.328V 4.994V 184.364 40.71°C 229.91V
30% 18.261A 3.492A 3.474A 1.406A 254.93 92.767% 940 26.9 41.02°C 0.945
11.986V 5.012V 3.325V 4.978V 274.807 48.7°C 229.9V
40% 24.934A 3.993A 3.974A 1.612A 340.024 93.043% 931 26.6 41.88°C 0.959
11.984V 5.009V 3.321V 4.963V 365.446 49.63°C 229.88V
50% 31.237A 4.994A 4.973A 1.82A 424.865 92.876% 923 26.3 42.1°C 0.967
11.985V 5.007V 3.318V 4.946V 457.461 50.92°C 229.87V
60% 37.509A 5.995A 5.973A 2A 509.266 92.573% 914 26 42.82°C 0.972
11.987V 5.005V 3.315V 4.93V 550.123 53.42°C 229.86V
70% 43.842A 6.998A 6.976A 2.24A 594.716 92.169% 987 28.8 43.11°C 0.976
11.989V 5.003V 3.312V 4.912V 645.244 54.85°C 229.84V
80% 50.171A 7.998A 7.979A 2.348A 679.518 91.704% 1065 31 43.73°C 0.979
11.991V 5.001V 3.308V 4.899V 740.994 56.87°C 229.83V
90% 56.899A 8.501A 8.47A 2.456A 764.942 91.219% 1136 32.8 44.39°C 0.981
11.994V 4.999V 3.306V 4.887V 838.585 58.3°C 229.82V
100% 63.362A 9.006A 8.993A 3.094A 849.758 90.568% 1477 40.5 45.25°C 0.983
11.996V 4.997V 3.302V 4.849V 938.228 58.38°C 229.8V
110% 69.689A 10.01A 10.093A 3.099A 934.327 89.889% 1879 51.5 46.17°C 0.984
11.997V 4.995V 3.299V 4.841V 1039.439 57.62°C 229.79V
CL1 0.116A 12.022A 11.945A 0A 101.295 84.687% 942 26.9 40.84°C 0.864
12.029V 5.008V 3.323V 5.044V 119.608 50.42°C 229.93V
CL2 0.115A 19.975A 0A 0A 101.371 83.7% 941 26.9 40.14°C 0.865
12.023V 5.005V 3.335V 5.05V 121.113 47.03°C 229.93V
CL3 0.115A 0A 19.882A 0A 67.381 77.441% 945 27 40.95°C 0.806
12.019V 5.018V 3.319V 5.046V 87.013 47°C 229.93V
CL4 70.868A 0A 0A 0A 849.5 91.278% 1225 35.1 45.55°C 0.982
11.988V 5.007V 3.312V 5.003V 930.677 56.61°C 229.8V

The results above are not used in the certification process

Light Load Tests

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
20W 1.246A 0.498A 0.495A 0.198A 19.993 73.242% 0 <6.0 44.13°C 0.837
11.907V 5.019V 3.335V 5.051V 27.298 36.02°C 114.86V
40W 2.722A 0.697A 0.693A 0.297A 39.993 76.363% 0 <6.0 44.5°C 0.92
12.010V 5.018V 3.334V 5.046V 52.368 37.08°C 114.86V
60W 4.206A 0.897A 0.891A 0.397A 59.996 83.965% 0 <6.0 47.11°C 0.94
12.014V 5.018V 3.333V 5.04V 71.456 38.88°C 114.85V
80W 5.686A 1.096A 1.089A 0.497A 79.943 86.53% 0 <6.0 48.03°C 0.949
12.015V 5.017V 3.332V 5.033V 92.388 39.36°C 114.85V

The results above are not used in the certification process

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
20W 1.248A 0.498A 0.495A 0.198A 20.001 73.444% 0 <6.0 42.7°C 0.472
11.908V 5.019V 3.334V 5.051V 27.233 36.27°C 229.95V
40W 2.722A 0.698A 0.693A 0.297A 40.002 77.771% 0 <6.0 44.41°C 0.668
12.010V 5.018V 3.334V 5.045V 51.44 37.04°C 229.94V
60W 4.205A 0.897A 0.891A 0.397A 60.001 84.781% 0 <6.0 49.07°C 0.757
12.017V 5.018V 3.333V 5.039V 70.77 38.11°C 229.93V
80W 5.684A 1.096A 1.089A 0.497A 79.938 87.481% 0 <6.0 48.94°C 0.815
12.018V 5.018V 3.333V 5.033V 91.378 39.29°C 229.93V

The results above are not used in the certification process

Ripple Measurements

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 21.0 mV 12.9 mV 13.1 mV 12.1 mV Pass
20% Load 19.1 mV 11.9 mV 12.9 mV 10.3 mV Pass
30% Load 14.2 mV 13.5 mV 14.3 mV 12.1 mV Pass
40% Load 14.0 mV 13.4 mV 13.4 mV 11.5 mV Pass
50% Load 14.6 mV 14.6 mV 14.3 mV 11.8 mV Pass
60% Load 16.4 mV 14.1 mV 14.3 mV 12.7 mV Pass
70% Load 16.5 mV 14.5 mV 15.0 mV 13.9 mV Pass
80% Load 17.2 mV 16.5 mV 17.0 mV 13.2 mV Pass
90% Load 18.4 mV 17.1 mV 17.1 mV 14.1 mV Pass
100% Load 24.4 mV 19.1 mV 19.9 mV 15.6 mV Pass
110% Load 23.3 mV 20.0 mV 20.6 mV 16.6 mV Pass
Crossload 1 23.9 mV 15.4 mV 18.2 mV 14.3 mV Pass
Crossload 2 13.7 mV 18.9 mV 18.7 mV 13.0 mV Pass
Crossload 3 20.8 mV 14.4 mV 16.7 mV 13.3 mV Pass
Crossload 4 24.2 mV 17.3 mV 16.4 mV 15.4 mV Pass

The results above are not used in the certification process

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 21.7 mV 13.5 mV 14.2 mV 13.1 mV Pass
20% Load 21.4 mV 13.3 mV 14.3 mV 10.4 mV Pass
30% Load 13.7 mV 12.2 mV 13.2 mV 11.3 mV Pass
40% Load 13.8 mV 13.5 mV 14.3 mV 11.4 mV Pass
50% Load 15.7 mV 14.4 mV 14.0 mV 11.8 mV Pass
60% Load 15.9 mV 14.7 mV 14.8 mV 12.2 mV Pass
70% Load 16.8 mV 14.6 mV 14.6 mV 13.6 mV Pass
80% Load 17.3 mV 15.2 mV 15.7 mV 14.6 mV Pass
90% Load 17.6 mV 16.3 mV 17.2 mV 13.7 mV Pass
100% Load 25.0 mV 18.1 mV 19.1 mV 15.0 mV Pass
110% Load 26.1 mV 18.4 mV 21.7 mV 15.2 mV Pass
Crossload 1 23.2 mV 14.4 mV 18.2 mV 14.0 mV Pass
Crossload 2 15.3 mV 18.3 mV 18.4 mV 12.7 mV Pass
Crossload 3 20.7 mV 14.5 mV 17.2 mV 13.3 mV Pass
Crossload 4 26.4 mV 17.0 mV 15.1 mV 15.1 mV Pass

The results above are not used in the certification process

Seasonic Focus GX-850 (ATX v3.1)

Top side
Power specifications label
All data and graphs included in this test report can be used by any individual on the following conditions:
› It should be mentioned that the test results are provided by Cybenetics
› The link to the original test results document should be provided in any case
Cybenetics offers the ETA and Lambda voluntary certification programs, through which the efficient and silent power supplies are promoted
CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
www.cybenetics.com - info@cybenetics.com