Type MLP 85 C Flatpack, Ultra Long Life, Aluminum Electrolytic
Very Low Profile
The MLPs high-energy storage and box-shape make it perfect for
voltage holdup or filtering in military SEM-E modules, telecom
circuit packs and computer cards. The MLP delivers up to 20 joules
of energy storage in a 1/2 height with 50 years life at +45 C. You
can readily heatsink it to double the ripple-current capability. The MLP
is the square-peg component that fits the square-holes in electronic
assemblies.
Highlights
- Low-profile replacement for snap-ins
- Double the ripple capability with a heatsink
- Nearly hermetic welded seal assures 50-year life
- Withstands more than 80,000 feet altitude
Specifications
Temperature Range 55C to +85C 250 Vdc
40C to +85C 300 Vdc
Rated Voltage Range 7.5 Vdc to 450 Vdc
Capacitance Range 110 F to 47,000 F
Capacitance Tolerance 20%
Leakage Current 0.002 CV A, @ 25 C and 5 min.
Ripple Current Multipliers Ambient Temperature, No Heatsink
45 C 55 C 65 C 75 C 85 C
1.00 0.90 0.75 0.56 0.27
Case Temperature
45 C 55 C 65 C 75 C 85 C
3.79 3.32 2.77 2.08 1.00
Frequency
10 kHz
50 Hz 60 Hz 120 Hz 360 Hz 1 kHz 5 kHz & up
7.5 to 63 V 0.94 0.95 1.00 1.04 1.05 1.06 1.06
80 to 450 V 0.80 0.85 1.00 1.17 1.24 1.28 1.29
Low Temperature Characteristics Impedance ratio: Z Z
55C +25C
10 (7.5 - 20 Vdc)
2 (25 250 Vdc)
Impedance ratio: Z Z
20C +25C
4 (300450Vdc)
Endurance Life Test 2000 h @ full load at +85 C
Capacitance 10%
ESR 200% of limit
DCL 100% of limit
Shelf Life Test 500 h at 85 C
Capacitance 100% of limit
ESR 100% of limit
DCL 100% of limit
Vibration All case sizes: 10g.
MIL-STD-202, Meth. 204,Sine Swept, EIEC 60068-2-6
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
Case Length 1.5" 2.0" 3.0"
Large Sides
Heatsinked
Insulation C/W C/W C/W
None 2.9 2.1 1.4
one
Polyester 3.3 2.4 1.6
None 2.7 1.9 1.2
both
Polyester 2.9 2.1 1.3
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
Case Material Aluminum
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 C. 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 C 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
2
T = I (ESR)(cc + ca)
where cc is the thermal resistance from core to case and ca 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 cc.
Example As an illustration, suppose you operate an insulated MLP332M080EB1C
in 65 C air and attach it to a commercial heatsink with a free-air thermal
resistance of 2.7 C/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 C/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 m,5.2 W equates to a ripple current of 13 A.
CDM Cornell Dubilier 140 Technology Place Liberty, SC 29657 Phone: (864)843-2277 Fax: (864)843-3800