CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
Version:00
SAMA B850
Serial NumberXMBB08525122000099
Lab IDSM85003185
Certification ID263185
  • Test Result Report ID: 26PS3185A
  • Certificate Issue Date: Mar 11, 2026
115V230V
Scheme: ETA-EMI PSU
115V230V
Scheme: LAMBDA PSU
Outside Validation Scope
Aristeidis Bitziopoulos, Certification Body General Manager

General Information

DUT Information

BrandSAMA
Manufacturer (OEM)RSY
SeriesB
Model NumberEPS-850-1BA3
Serial NumberXMBB08525122000099
DUT Notes

DUT Specifications

Rated Voltage (Vrms)100-240
Rated Current (Arms)6-10
Rated Frequency (Hz)50-60
Rated Power (W)850
TypeATX12V
Dimensions (W x H x D)150 x 85 x 140mm
Cooling120mm Sleeve Bearing Fan (S1202512L)
Semi-Passive Operation✗
Cable DesignFixed cables

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps151570.82.50.4
Watts100849.612.54.8
Total Max. Power (W)850

Test Equipment

Electronic Loads Chroma 63601-5 x2
Chroma 63600-2
Chroma 63640-80-80 x10
Chroma 63610-80-20
AC Sources Chroma 6530, APM SP300VAC4000W-P, GW Instek ASR-3500
Power Analyzers Rohde & Schwarz HMC8015 & NPA701
Oscilloscopes Picoscope 4444, 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
EMI Analyzer TekBox TBMR-110M-EU
Isolation Transformer 4kVA
UPS FSP Champ Tower 3kVA, CyberPower OLS3000E 3kVA
Testing Methodology Cybenetics PSU Test Protocol

Cables and Connectors(Non-accredited measurements)

Captive Cables
Description Cable Count Connector Count (Total) Gauge Cable Type
ATX connector 24 pin (560mm) 1 1 18-22AWG Tinned Copper
4+4 pin EPS12V (700mm+150mm) 1 2 18AWG Tinned Copper
6+2 pin PCIe (560mm) 1 1 18AWG Tinned Copper
6+2 pin PCIe (560mm+150mm) 1 2 18AWG Tinned Copper
12+4 pin PCIe (600mm) (450W) 1 1 16-24AWG Tinned Copper
SATA (500mm+150mm+150mm) / 4-pin Molex (+150mm) 2 6 / 2 18AWG Tinned Copper
Modular Cables
AC Power Cord (1350mm) - C13 coupler 1 1 18AWG -

Parts Description

General Data
Manufacturer (OEM) RSY
PCB Type Double-Sided
Primary Side
Transient Filter 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV
Inrush Protection NTC Thermistor 2.5D-15 (2.5Ohm @ 25°C) & Relay
Bridge Rectifier 1x - (600V, 30A @ 100°C)
APFC MOSFETs 2x Shenzhen SI Semiconductors SIF40N65G2HP (650V, 40A @ 100°C, Rds(on): 0.09Ohm)
APFC Boost Diode Maplesemi MSP08065G1 (650V, 8A @ 150°C)
Bulk Cap(s) 1x TEAPO (420V, 390uF, 2000h @ 105°C, DG )
Main Switchers 2x Shenzhen SI Semiconductors SIF40N65G2HP (650V, 40A @ 100°C, Rds(on): 0.09Ohm)

APFC Controller

Texas Instruments UCC28180 &
Sync Power SPN5003 (reducing no load consumption)

Resonant Controller Texas Instruments UCC25600
IC Driver -
Topology Primary side: APFC, Half-Bridge & LLC Resonant Converter
Secondary side: [12V] Synchronous Rectification & [Minor Rails] DC-DC converters
Secondary Side
+12V MOSFETs 4x AGMSemi AGM1405C1 (40V, 130A @ 100°C, Rds(on): 3.2mOhm)
5V & 3.3V DC-DC Converters: 4x Leinuosemi LN035N030GP (30V, 91A @ 100°C, Rds(on): 4.0mOhm)
PWM Controller(s): 2x Anpec APW7164
Filtering Capacitors

Electrolytic:
16x Suscon (3-6,000 @ 105°C)
Polymer:
2x

Supervisor IC Grenery GR8313F  (OVP, UVP, OCP, PG)
Fan Controller / Micro Controller Texas Instruments LM358
Fan Model Globe Fan S1202512L (120mm, 12V, 0.18A, Fluid Dynamic Bearing Fan)
5VSB Circuit
Rectifier Shenzhen SI Semiconductors SIF4N70F
Standby PWM Controller 583J33 IC

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

Efficiency RatingSILVER
Noise RatingStandard+
Average Efficiency (>1450 load combinations)86.491%
Average Noise Output (>1450 Load Combinations)38.71dBA
Average PF (>1450 Load Combinations)0.987
Efficiency With 10W (≤500W) or 2% (>500W) Load65.715%
Standby Power Consumption0.0548W
12V Ripple (Full Load)63.95mV
5V Ripple (Full Load)34.43mV
3.3V Ripple (Full Load)40.21mV
5VSB Ripple (Full Load)34.12mV
12V Load Regulation0.72%
5V Load Regulation1.57%
3.3V Load Regulation4.94%
5VSB Load Regulation3.27%
Inrush Current68.120A
Efficiency RatingSILVER
Noise RatingStandard+
Average Efficiency (>1450 load combinations)88.865%
Average Noise Output (>1450 Load Combinations)38.72dBA
Average PF (>1450 Load Combinations)0.950
Efficiency With 10W (≤500W) or 2% (>500W) Load67.195%
Standby Power Consumption0.1231W
12V Ripple (Full Load)65.38mV
5V Ripple (Full Load)35.00mV
3.3V Ripple (Full Load)43.74mV
5VSB Ripple (Full Load)34.07mV
12V Load Regulation0.70%
5V Load Regulation1.57%
3.3V Load Regulation3.29%
5VSB Load Regulation3.23%
Inrush Current137.260A
12V Transient Response (200%)11.20V
5V Transient Response (200%)4.897V
3.3V Transient Response (200%)3.139V
5VSB Transient Response (200%)5.049V
Hold-Up Time & Power Ok Signal17.90ms
AC Loss to PWR_OK Hold Up Time16.80ms
PWR_OK Inactive to DC Loss Delay1.10ms
PSU Timings: T1 (20% / 100%)111.0ms111.0ms
PSU Timings: T3 (20% / 100%)119.0ms120.0ms
12V OCP (28.2°C / 43.7°C)91.80A (129.66%), 12.012V86.20A (121.75%), 12.011V
5V OCP (28.2°C / 43.7°C)26.6A (177.33%), 5.007V25.8A (172.00%), 5.009V
3.3V OCP (28.2°C / 43.7°C)27.5A (183.33%), 3.301V27.1A (180.67%), 3.302V
5VSB OCP (28.2°C / 43.7°C)4.1A (164.00%), 5.041V *High Ripple (63.68mV)4.1A (164.00%), 5.047V *High Ripple (67.11mV)
OPP (28.79°C / 43.02°C)125.02%117.96%

Hold-Up Time & Power Ok Signal

Hold-Up Time (ms)17.9
AC Loss to PWR_OK Hold Up Time (ms)16.8
PWR_OK Inactive to DC Loss Delay (ms)1.1

Vampire Power

Tables

Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 115.06 V 115.05 V 113.85 V 115.08 V 116.15 V PASS
Mains Frequency: 60.00 Hz 59.99 Hz 59.40 Hz 60.01 Hz 60.60 Hz PASS
Mains Voltage CF: 1.416 1.415 1.340 1.416 1.490 PASS
Mains Voltage THD: 0.13 % 0.11 % N/A 0.15 % 2.00 % PASS
Real Power: 0.055 W 0.035 W N/A 0.079 W N/A N/A
Apparent Power: 9.177 W 9.158 W N/A 9.199 W N/A N/A
Power Factor: 0.005 N/A N/A N/A N/A N/A
Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 230.14 V 230.12 V 227.70 V 230.16 V 232.30 V PASS
Mains Frequency: 50.00 Hz 50.00 Hz 49.50 Hz 50.00 Hz 50.50 Hz PASS
Mains Voltage CF: 1.415 1.415 1.340 1.416 1.490 PASS
Mains Voltage THD: 0.14 % 0.13 % N/A 0.16 % 2.00 % PASS
Real Power: 0.123 W 0.085 W N/A 0.175 W N/A N/A
Apparent Power: 30.009 W 29.975 W N/A 30.043 W N/A N/A
Power Factor: 0.004 N/A N/A N/A N/A N/A

Graphs

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

Conducted Emissions EN55032 & CISPR 32

NEUTRAL
PHASE

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 0.234W 64.81% 0.04
5.195V 0.361W 115.04V
2 0.09A 0.467W 71.445% 0.071
5.193V 0.654W 115.04V
3 0.55A 2.849W 77.712% 0.243
5.18V 3.666W 115.04V
4 1A 5.164W 77.61% 0.299
5.164V 6.654W 115.04V
5 1.5A 7.714W 77.564% 0.328
5.142V 9.945W 115.03V
6 2.5A 12.734W 76.995% 0.359
5.094V 16.539W 115.03V
Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.234W 52.335% 0.015
5.191V 0.447W 230V
2 0.09A 0.467W 63.119% 0.025
5.19V 0.741W 229.99V
3 0.55A 2.848W 75.97% 0.114
5.178V 3.748W 230V
4 1A 5.165W 77.185% 0.171
5.165V 6.692W 230V
5 1.5A 7.722W 77.497% 0.213
5.148V 9.965W 229.99V
6 2.5A 12.757W 77.541% 0.259
5.103V 16.452W 229.99V

Protection Features

OCP (Normal @ 28.2°C)12V: 91.80A (129.66%), 12.012V
5V: 26.6A (177.33%), 5.007V
3.3V: 27.5A (183.33%), 3.301V
5VSB: 4.1A (164.00%), 5.041V *High Ripple (63.68mV)
OCP (Hot @ 43.7°C)12V: 86.20A (121.75%), 12.011V
5V: 25.8A (172.00%), 5.009V
3.3V: 27.1A (180.67%), 3.302V
5VSB: 4.1A (164.00%), 5.047V *High Ripple (67.11mV)
OPP (Normal @ 28.8°C)1062.66W (125.02%)
OPP (Hot @ 43.0°C)1002.65W (117.96%)
OTP✓ (93°C @ 12V Heatsink)
SCP12V to Earth: ✓
5V to Earth: ✓
3.3V to Earth: ✓
5VSB to Earth: ✓
-12V to Earth: ✓
PWR_OKProper Operation
UVP (Full Load @ 90V)✓
UVP (No Damage @ 80V)✓
Conducted Emissions EN55032 & CISPR 32✓
NLO✓
Fan Failure Protection✗
SIPSurge: MOV
Inrush: NTC

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% 5.244A 1.985A 1.978A 0.97A 84.999 83.554% 831 20.3 40.15°C 0.97
12.089V 5.037V 3.337V 5.153V 101.73 42.44°C 115.01V
20% 11.507A 2.982A 2.982A 1.168A 169.934 87.559% 845 20.3 40.99°C 0.982
12.082V 5.03V 3.32V 5.138V 194.078 43.58°C 114.98V
30% 18.129A 3.485A 3.492A 1.366A 254.942 88.602% 861 20.7 41.22°C 0.987
12.074V 5.022V 3.307V 5.124V 287.738 43.55°C 114.95V
40% 24.768A 3.988A 4.006A 1.566A 340.034 88.768% 866 20.9 41.98°C 0.99
12.065V 5.015V 3.295V 5.109V 383.06 49.02°C 114.92V
50% 31.051A 4.993A 5.034A 1.767A 424.842 88.299% 1142 30.7 42.16°C 0.992
12.055V 5.007V 3.278V 5.093V 481.138 50.47°C 114.88V
60% 37.317A 6.002A 6.075A 1.97A 509.385 87.804% 1455 37.2 42.68°C 0.993
12.048V 4.999V 3.26V 5.078V 580.14 49.83°C 114.85V
70% 43.657A 7.015A 7.127A 2.173A 594.704 87.133% 1799 42.1 43.13°C 0.993
12.040V 4.99V 3.242V 5.061V 682.522 51.25°C 114.82V
80% 50.012A 8.029A 8.188A 2.278A 679.524 86.324% 2074 46.1 43.81°C 0.993
12.030V 4.981V 3.224V 5.048V 787.181 53.25°C 114.79V
90% 56.776A 8.544A 8.721A 2.384A 764.949 85.502% 2073 46 44.03°C 0.993
12.020V 4.973V 3.211V 5.034V 894.654 55°C 114.75V
100% 63.483A 9.061A 9.291A 2.49A 849.664 84.537% 2076 46.1 45.04°C 0.993
12.011V 4.965V 3.197V 5.02V 1005.08 58.36°C 114.71V
110% 69.938A 10.085A 10.481A 2.496A 935.054 83.338% 2075 46.1 46.4°C 0.991
12.000V 4.956V 3.177V 5.009V 1122.001 59.92°C 114.67V
CL1 0.116A 11.998A 12.206A 0A 101.297 78.911% 1097 28.5 40.89°C 0.984
12.089V 5.016V 3.253V 5.162V 128.371 46.91°C 115V
CL2 0.116A 14.923A 0A 0A 76.383 78.232% 850 20.4 40.19°C 0.969
12.091V 5.025V 3.345V 5.173V 97.636 44.72°C 115.01V
CL3 0.115A 0A 15.292A 0A 50.895 72.103% 837 20.4 40.3°C 0.947
12.092V 5.034V 3.237V 5.174V 70.587 44.09°C 115.02V
CL4 70.769A 0A 0A 0.002A 849.544 85.48% 2075 46.1 45.49°C 0.993
12.005V 4.987V 3.278V 5.109V 993.858 57.35°C 114.72V

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% 5.244A 1.985A 1.971A 0.97A 85.003 85.431% 830 20.2 40.22°C 0.821
12.089V 5.037V 3.348V 5.153V 99.5 41.66°C 229.98V
20% 11.508A 2.983A 2.966A 1.168A 169.943 89.441% 832 20.3 40.55°C 0.924
12.082V 5.029V 3.338V 5.138V 190.004 42.99°C 229.97V
30% 18.130A 3.485A 3.47A 1.366A 254.951 90.559% 834 20.3 41.38°C 0.956
12.073V 5.022V 3.329V 5.123V 281.531 45.19°C 229.95V
40% 24.768A 3.988A 3.977A 1.566A 340.041 90.872% 835 20.4 41.8°C 0.969
12.065V 5.015V 3.319V 5.109V 374.197 47.32°C 229.94V
50% 31.049A 4.993A 4.989A 1.767A 424.854 90.599% 1147 30.7 42.36°C 0.974
12.057V 5.007V 3.308V 5.093V 468.937 48.01°C 229.92V
60% 37.314A 6.003A 6.007A 1.97A 509.381 90.273% 1491 37.8 42.62°C 0.976
12.049V 4.998V 3.297V 5.078V 564.266 48.34°C 229.91V
70% 43.653A 7.016A 7.034A 2.173A 594.694 89.813% 1810 42.1 43.15°C 0.976
12.040V 4.99V 3.285V 5.062V 662.145 48.4°C 229.89V
80% 50.004A 8.029A 8.067A 2.278A 679.516 89.284% 2068 45.9 43.61°C 0.974
12.031V 4.981V 3.273V 5.049V 761.076 49.28°C 229.87V
90% 56.768A 8.544A 8.583A 2.383A 764.933 88.729% 2071 45.9 44.39°C 0.973
12.022V 4.973V 3.262V 5.036V 862.099 50.88°C 229.86V
100% 63.477A 9.06A 9.135A 2.489A 849.645 88.072% 2076 46.1 45.93°C 0.972
12.012V 4.966V 3.251V 5.022V 964.714 54.09°C 229.84V
110% 69.932A 10.084A 10.284A 2.495A 935.042 87.227% 2075 46.1 46.97°C 0.97
12.001V 4.957V 3.238V 5.011V 1071.97 56.25°C 229.82V
CL1 0.116A 11.998A 11.954A 0A 101.294 81.11% 1049 27.1 41.2°C 0.866
12.090V 5.016V 3.321V 5.163V 124.887 45.94°C 229.98V
CL2 0.116A 14.926A 0A 0A 76.38 79.964% 847 20.4 41.22°C 0.813
12.091V 5.024V 3.345V 5.173V 95.519 44.72°C 229.98V
CL3 0.114A 0A 14.869A 0A 50.892 74.799% 835 20.4 41.3°C 0.736
12.092V 5.034V 3.329V 5.174V 68.038 43.8°C 229.99V
CL4 70.762A 0A 0A 0.002A 849.523 88.91% 2073 46 45.65°C 0.971
12.005V 4.987V 3.279V 5.11V 955.488 52.08°C 229.84V

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 1.227A 0.496A 0.492A 0.193A 19.993 68.1% 812 18.8 36.1°C 0.834
12.097V 5.043V 3.355V 5.184V 29.358 37.71°C 115.03V
40W 2.702A 0.694A 0.689A 0.29A 39.993 77.573% 820 19.4 37.02°C 0.914
12.094V 5.042V 3.352V 5.179V 51.556 38.38°C 115.02V
60W 4.178A 0.893A 0.887A 0.386A 59.993 81.707% 824 19.6 38.71°C 0.948
12.092V 5.04V 3.348V 5.174V 73.425 39.32°C 115.01V
80W 5.650A 1.091A 1.085A 0.484A 79.936 83.953% 828 20 39.44°C 0.968
12.089V 5.039V 3.345V 5.169V 95.215 40.82°C 115.01V

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 1.228A 0.496A 0.491A 0.193A 20.002 69.45% 814 19 36.38°C 0.555
12.096V 5.044V 3.358V 5.184V 28.801 37.03°C 229.99V
40W 2.704A 0.694A 0.689A 0.29A 40.001 79.372% 819 19.3 37.44°C 0.669
12.093V 5.042V 3.355V 5.179V 50.397 37.8°C 229.99V
60W 4.179A 0.893A 0.886A 0.387A 59.999 83.533% 823 19.6 38.71°C 0.748
12.091V 5.04V 3.353V 5.174V 71.828 39.2°C 229.99V
80W 5.652A 1.091A 1.083A 0.484A 79.946 85.684% 827 19.9 39.19°C 0.807
12.089V 5.039V 3.35V 5.169V 93.303 40.23°C 229.98V

The results above are not used in the certification process

Ripple Measurements

Test12V5V3.3V5VSBPass/Fail
10% Load24.96mV21.51mV27.32mV23.48mVPass
20% Load27.93mV22.38mV26.29mV26.75mVPass
30% Load31.52mV22.84mV27.27mV26.34mVPass
40% Load35.86mV24.83mV31.41mV26.50mVPass
50% Load37.04mV26.51mV31.41mV28.29mVPass
60% Load41.39mV27.59mV32.48mV29.67mVPass
70% Load45.64mV28.61mV33.25mV29.62mVPass
80% Load48.19mV30.60mV36.99mV30.74mVPass
90% Load51.77mV31.67mV38.16mV30.95mVPass
100% Load63.95mV34.43mV40.21mV34.12mVPass
110% Load85.69mV39.29mV40.44mV35.76mVPass
Crossload131.16mV21.51mV30.44mV22.40mVPass
Crossload227.93mV22.53mV25.83mV22.86mVPass
Crossload328.45mV21.66mV31.97mV20.87mVPass
Crossload468.71mV36.48mV39.54mV30.69mVPass

The results above are not used in the certification process

Test12V5V3.3V5VSBPass/Fail
10% Load25.07mV22.83mV26.09mV24.55mVPass
20% Load28.91mV25.03mV26.70mV25.47mVPass
30% Load31.92mV23.19mV27.57mV26.50mVPass
40% Load36.17mV27.03mV29.87mV26.80mVPass
50% Load36.94mV26.82mV32.28mV29.51mVPass
60% Load41.54mV27.69mV33.56mV28.75mVPass
70% Load45.59mV28.40mV34.02mV30.90mVPass
80% Load49.17mV31.17mV35.91mV30.79mVPass
90% Load53.77mV32.29mV36.68mV31.71mVPass
100% Load65.38mV35.00mV43.74mV34.07mVPass
110% Load85.39mV40.21mV49.93mV36.16mVPass
Crossload130.95mV22.22mV31.00mV22.76mVPass
Crossload228.65mV22.89mV26.65mV24.14mVPass
Crossload325.38mV21.61mV32.38mV20.36mVPass
Crossload470.45mV37.29mV40.51mV30.69mVPass

The results above are not used in the certification process

SAMA B850

Top side
Power specifications label
Fan
PSU Internals
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