Understanding PSU specs to order replacement.

So my Qnap NAS device failed recently. The device is out of warranty so absolutely no help from QNAP. I've managed to confirm that the PSU has failed, and can boot the device fine from a spare ATX PSU. The existing PSU is a customised FSP220-60LE which is flex ATX format. These are turning out to be almost impossible to source new in the UK and those that are available are extortionately priced. So i'm considering purchasing an alternative compatible PSU. I understand that its a 220w PSU, and the format is Flex ATX. However, I'm not sure what the '60LE' represents in the model number. I have been advised that this is the DC output in Volts that the PSU can support. Can anyone confirm this? Here are the specs of the original PSU.

Could anybody help me to understand the above, and possibly advise on suitable alternatives?

Many Thanks
3 answers Last reply
More about understanding psu specs order replacement
  1. My guess is the 60 is just for 60hz.

    220W output, with a 17A limit on 12V. Not exactly very demanding. I would say almost any power supply that can give you typical ATX voltages will do fine. 350W or something.

    Hold up Time:
    115V/60Hz 17mSec.
    Minimum@100% Load,
    230V/50Hz 17mSec.
    Minimum,@100% Load
    Ouput Voltage
    Regulation:
    +3.3Vdc output : +3.5 Vdc
    minimum, + 4.8Vdc
    maximum
    +5Vdc output : +5.5 Vdc
    minimum, + 6.82Vdc
    maximum
    +12Vdc output : +13.4 Vdc
    minimum, + 15.6Vdc
    maximum
    Output Rise Time:
    115V-rms/230V-rms
    5V
    20ms Maximum
    115V-rms/230V-rms 12V
    20ms Maximum
    Ripple & Noise:
    3.3V:50mV p-p
    5V:50mV p-p
    12V1:120mV p-p
    12V2:120mV p-p
    -12V:120mV p-p
    5Vsb:50mV p-p
    Short Circuit Protection:
    load < 0.1 Ohm

    5V, 3.3V, 12V, -12V Will have the regulation to 10% when all load take off.
    220W(50
    °C
    ):3.3V+5V+12V1+12V2=207W 250W
    (25
    °C
    ):3.3V+5V+12V1+12V2=237W
    The 12V1 and 12V2 total output shall not exceed 17A.
    The +3.3V and +5V total output shall not exceed 90 watts.
    The +3.3V and +5V total output shall not exceed 110 watts
    The total output shall not exceed 250 watt

    http://pdf1.alldatasheet.com/datasheet-pdf/view/782131/FSP/FSP220-60LE.html
  2. Eximo said:
    My guess is the 60 is just for 60hz.

    220W output, with a 17A limit on 12V. Not exactly very demanding. I would say almost any power supply that can give you typical ATX voltages will do fine. 350W or something.

    Hold up Time:
    115V/60Hz 17mSec.
    Minimum@100% Load,
    230V/50Hz 17mSec.
    Minimum,@100% Load
    Ouput Voltage
    Regulation:
    +3.3Vdc output : +3.5 Vdc
    minimum, + 4.8Vdc
    maximum
    +5Vdc output : +5.5 Vdc
    minimum, + 6.82Vdc
    maximum
    +12Vdc output : +13.4 Vdc
    minimum, + 15.6Vdc
    maximum
    Output Rise Time:
    115V-rms/230V-rms
    5V
    20ms Maximum
    115V-rms/230V-rms 12V
    20ms Maximum
    Ripple & Noise:
    3.3V:50mV p-p
    5V:50mV p-p
    12V1:120mV p-p
    12V2:120mV p-p
    -12V:120mV p-p
    5Vsb:50mV p-p
    Short Circuit Protection:
    load < 0.1 Ohm

    5V, 3.3V, 12V, -12V Will have the regulation to 10% when all load take off.
    220W(50
    °C
    ):3.3V+5V+12V1+12V2=207W 250W
    (25
    °C
    ):3.3V+5V+12V1+12V2=237W
    The 12V1 and 12V2 total output shall not exceed 17A.
    The +3.3V and +5V total output shall not exceed 90 watts.
    The +3.3V and +5V total output shall not exceed 110 watts
    The total output shall not exceed 250 watt

    http://pdf1.alldatasheet.com/datasheet-pdf/view/782131/FSP/FSP220-60LE.html



    Thanks for the quick reply. Thats great to hear. Do you think something like this PSU from scan would suffice?

    https://www.scan.co.uk/products/250w-seasonic-ss-250sub-active-pfc-f0-80plus-bronze-fully-modular-sub-flex-psu

    Is the seasonic brand a quality brand?

    thanks
  3. Seasonic is a well known OEM. No idea about their Flex ATX line up, but I don't see why not. A somewhat low power device, relatively.
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