Type MLSH 125 °C Hermetic Slimpack, Aluminum Electrolytic Capacitor
The world’s only hermetically sealed aluminum electrolytic capacitor with
glass-to-metal seal, type MLSH has extraordinary long life and rugged
construction for the most demanding power electronics applications.
Type MLSH has superior capacitance retention compared to axial wet
tantalum capacitors at -55 °C. Packaged in a robust stainless steel case
capable of withstanding 80g’s, it replaces 3 or more axial wet tantalum
capacitors in parallel. Unlike wet tantalums that require voltage derating
at temperatures above 85 °C, type MLSH capacitors are rated for full
operating voltage at 125 °C and tested to 5000 hrs at rated voltage and
temperature.
Highlights
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-
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Hermetically sealed with no dry out
Alternative to axial wet tantalum
High capacitance retention @ -55 ºC
5000 Hr DC life test
Up to 80g vibration
Specifications
Temperature Range
Rated Voltage Range
Capacitance Range
Capacitance Tolerance
Leakage Current
Ripple Current Multipliers
–55 °C to +125 °C
30 Vdc to 250 Vdc
120 µF to 3200 µF
±20%
≤ 0.002 CV µA, @ 25 °C and 5 mins.
Case Temperature
45 °C 55 °C 65 °C 75 °C 85 °C
1.41
1.32
1.22
1.12
1.00
Ambient Temperature, No Heatsink
45 °C
0.63
Frequency
50 Hz
5 to 40 V
60 to 250 V
0.95
0.80
60 Hz 120 Hz 360 Hz
0.96
0.84
1.00
1.00
1.03
1.18
1 kHz
1.04
1.25
10 kHz &
5 kHz
up
1.04
1.30
1.04
1.30
55 °C
0.58
65 °C
0.54
75 °C
0.49
85 °C 95 °C 105 °C 115 °C 125 °C
0.44
0.38
0.31
0.22
0.00
95 °C 105 °C 115 °C 125 °C
0.87
0.71
0.50
0.00
Low Temperature Characteristics
DC Life Test
Impedance ratio: Z
–55 ⁰C
∕ Z
+25 ⁰C
@120 Hz
≤10 (5 - 20 Vdc), ≤3 (25 - 250 Vdc)
5000 h @ rated voltage at 125 °C
∆ Capacitance ±20% (<50 Vdc)
∆ Capacitance ±10% (>50 Vdc)
ESR 200% of limit
DCL 100% of limit
5 years @ <=40 ºC, for HRMLSH 10 years @ <=40 ºC
Capacitance 100% of limit
ESR 100% of limit
DCL ≤ 0.004 CV μA
500 h @ 125 °C
Capacitance 100% of limit
ESR 100% of limit
DCL ≤ 0.002 CV μA
Standard MLSH Flatpack: 80g
MIL-STD-202, Meth. 204, Condition H
Shelf Life Test
Vibration
Mounting: Vibration capability is dependent upon mounting restraint.
CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800
Type MLSH 125 °C Hermetic Slimpack, Aluminum Electrolytic Capacitor
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, 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.
Established Reliability capacitors shall be subjected to a minimum of 100
percent of the DC rated voltage at 85 ºC 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.
Large Sides
Heatsinked
one
both
Case Length
Insulation
None
Polyester
None
Polyester
1.5"
ºC/W
6.6
7.2
4.4
4.7
High Reliability Test/Burn-in
Thermal Resistance
Typical Weight
Terminals
Case Material
Ripple Current Capability
Air Cooled
Case JK - 32g
18 AWG copper wire with 60/40 tin-lead electroplate, 20 amps max
Stainless Steel
The ripple current capability is set by the maximum permissible internal
core temperature, 125 ºC.
The ripple currents in the ratings tables are for 85 ºC case temperatures.
For air temperatures without a heatsink use the multipliers for Ambient
Temperature, No Heatsink.
Temperature rise from the hottest internal spot, the core, to ambient air is
∆T = I
2
(ESR)(θcc + θca), recommended max ∆T of 30 ºC
where θcc is the thermal resistance from core to case and θca from case to
ambient. To calculate maximum ripple capability with the MLSH attached to
a heatsink use the maximum core temperature and the values for θcc.
Heatsink Cooled
Example
As an illustration, suppose you operate an noninsulated
MLSH172M050JK0C in 95 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 MLSH and the heatsink, and the total thermal resistance is 2.7
+6. 6 or 9.3º C/W. The power which would heat the core to 125 °C is (125 -
95)/9. 3 or 3.2 W. For an ESR of 108 mΩ, 3.2 W equates to a ripple current of
5.45 A.
CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800
Analog electronics
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