Type MLS 125 C Flatpack, Ultra Long Life, Aluminum Electrolytic
Now Available with High Vibration and High Reliability Options
Encased in rugged stainless steel, the MLS is perfect for high reliability
military systems and applications operating above 85 C. For our
highest performing 125 C Flatpacks, choose type HVMLS available in
a special stainless steel case for high vibration applications up to 50g.
Specify type HRMLS for high reliability Flatpacks which are subjected
to MIL level burn-in processes to ensure established reliability.
Highlights
- Near-hermetic welded seal
- Stainless-steel case
- 100 years expected operating life
- Withstands more than 80,000 feet altitude
- Type HV up to 50g
- Type HR, High Reliability
Specifications
Temperature Range 55 C to +125 C
Rated Voltage Range 5.0 Vdc to 250 Vdc
Capacitance Range 220 F to 47,000 F
Capacitance Tolerance 20%
Leakage Current 0.002 CV A, @ 25 C and 5 mins.
Case Temperature
Ripple Current Multipliers
45 C 55 C 65 C 75 C 85 C 95 C 105 C 115 C 125 C
1.41 1.32 1.22 1.12 1.00 0.87 0.71 0.50 0.00
Ambient Temperature, No Heatsink
45 C 55 C 65 C 75 C 85 C 95 C 105 C 115 C 125 C
0.63 0.58 0.54 0.49 0.44 0.38 0.31 0.22 0.00
Frequency
10 kHz &
50 Hz 60 Hz 120 Hz 360 Hz 1 kHz 5 kHz up
5 to 40 V 0.95 0.96 1.00 1.03 1.04 1.04 1.04
60 to 250 V 0.80 0.84 1.00 1.18 1.25 1.30 1.30
Low Temperature Characteristics Impedance ratio: Z Z
55 C +25 C
10 (5 - 20 Vdc)
2 (25 - 250 Vdc)
Endurance Life Test 10,000 h @ full load at 85 C
Capacitance 10%
ESR 200% of limit
DCL 100% of limit
DC Life Test 2000 h at rated voltage &125 C
Capacitance 10%
ESR 200% of limit
DCL 100% of limit
Shelf Life Test 500 h at 125 C
Capacitance 100% of limit
ESR 100% of limit
DCL 100% of limit
Vibration Standard MLS Flatpack: 10g
Mounting: Vibration capability is dependent upon mounting restraint. The
10 Hz to 2 kHz Sine Swept, 0.06 pp max and 10g.
optional welded mounting tabs, alone, are not capable of sustaining the high
Type HVMLS Flatpack 1.5 and 2.0 case length, 50g
vibration levels.
Type HVMLS Flatpack 2.5 and 3.0 case length, 30g
To achieve the high vibration levels as published on right, additional mounting
MIL-STD-202, Meth. 204, Sine Swept, IEC 60068-2-6
restraint is required.
CDM Cornell Dubilier 140 Technology Place Liberty, SC 29657 Phone: (864)843-2277 Fax: (864)843-3800
For new designs please review the MLSG seriesType MLS 125 C Flatpack, Ultra Long Life, Aluminum Electrolytic
Available with High Vibration and High Reliability Options
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.
High Reliability Test/Burn-in Established Reliability capacitors shall be subjected to a minimum of 100
percent of the dc rated voltage at 85 C for 48 hours minimum but not to
exceed 96 hours. During this test, capacitors shall be adequately protected
against temporary voltage surges of 10 percent or more of the test voltage.
After burn-in, the capacitors shall be returned to room ambient conditions
and the dc leakage, capacitance, and ESR shall be measured with respect
to specified limits.
Thermal Resistance
Case Length 1.5" 2.0" 3.0"
Large Sides
Heatsinked
Insulation C/W C/W C/W
None 4.3 3.1 2.0
one
Polyester 4.7 3.4 2.2
None 2.8 2.0 1.3
both
Polyester 3.0 2.2 1.4
ESL 30 nH measured 1/4 from case at 1 MHz
Weight Case EK 43 g typical
Case EA 76 g typical
Case EB 92 g typical
Terminals 18 AWG copper wire with 60/40 tin-lead electroplate, 20 amps max
Case Material Stainless Steel
Ripple Current Capability The ripple current capability is set by the maximum permissible internal
core temperature, 125 C.
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 MLS attached to a
heatsink use the maximum core temperature and the values for cc.
Example As an illustration, suppose you operate an insulated MLS332M060EB1C
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 MLS and
the heatsink, and the total thermal resistance is 2.7 +1.8 or 4.5 C/W. The
power which would heat the core to 125 C is (125 - 65)/4.5 or 13.3 W. For
an ESR of 31 m, 13.3 W equates to a ripple current of 20.7 A, however, the
wire leads are rated for only 20 A.
CDM Cornell Dubilier 140 Technology Place Liberty, SC 29657 Phone: (864)843-2277 Fax: (864)843-3800
For new designs please review the MLSG series