CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800

Type MLP 85 °C Flatpack, Ultra Long Life, Aluminum Electrolytic

Very Low Profile

Vibration Test

Level

The specimens, while deenergized or operating under the load conditions

specified, shall be subjected to the vibration amplitude, frequency range,

and duration specified for each case size.

Amplitude

The specimens shall be subjected to a simple harmonic motion having

an amplitude of either 0.06-inch double amplitude (maximum total

excursion) or peak level specified above (XXg peak), whichever is less. The

tolerance on vibration amplitude shall be ±10 percent.

Frequency Range

The vibration frequency shall be varied logarithmically between the

approximate limits of 10 to 2,000 Hz.

Sweep Time and Duration

The entire frequency range of 10 to 2,000 Hz and return to 10 Hz shall be

traversed in 20 minutes. This cycle shall be performed 12 times in each

of three mutually perpendicular directions (total of 36 times), so that

the motion shall be applied for a total period of approximately 12 hours.

Interruptions are permitted provided the requirements for rate of change

and test duration are met.

Thermal Resistance

ESL

<30 nH measured 1/4” from case at 1 MHz

Weight

Case EK 30 g typical

Case EA 42 g typical

Case EB 66 g typical

Terminals

18 AWG copper wire with 60/40 tin-lead electroplate, 20 amps max

Double the Ripple Current

Attach the MLP to an external heatsink and you can easily double the ripple

current capability and assure long life through cooler operation. The broad,

flat top and bottom on the MLP are ideal for cooling the capacitor and

removing the heat caused by ripple current.

Ripple Current Capability

The ripple current capability is set by the maximum permissible internal

core temperature, 88 ºC. This assures that the case does not inflate beyond

0.5 inch height.

Air Cooled

The ripple currents in the ratings tables are for 85 ºC case temperatures.

For air temperatures without a heatsink use the multipliers Ambient

Temperature, No Heatsink.

Heatsink Cooled

Temperature rise from the internal hottest spot, the core, to ambient air is

where θcc is the thermal resistance from core to case and θca from case to

ambient. To calculate maximum ripple capability with the MLP attached to

a heatsink use the maximum core temperature and the values for θcc.

Example

As an illustration, suppose you operate an insulated MLP332M080EB1C

in 65 ºC air and attach it to a commercial heatsink with a free-air thermal

resistance of 2.7 ºC/W. Use a good thermal grease between the MLP and

the heatsink, and the total thermal resistance is 2.7 +1.7 or 4.4 ºC/W. The

power which would heat the core to 88 °C is (88-65)/4.4 or 5.2 W. For an

ESR of 31 mΩ,5.2 W equates to a ripple current of 13 A.

Large Sides

Heatsinked

Case Length

1.5"

2.0"

3.0"

Insulation

ºC/W

ºC/W

ºC/W

one

None

2.9

2.1

1.4

Polyester

3.3

2.4

1.6

both

None

2.7

1.9

1.2

Polyester

2.9

2.1

1.3