Vibration

Mounting: Vibration capability is dependent upon mounting restraint.

MIL-STD-202, Meth. 204, Sine Swept, IEC 60068-2-6

All Sizes = 10g

MIL-STD-202, Meth. 204, Condition H

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.

Thermal Resistance

Thermal Resistance (°C/W) by Case Length

# of Sides

heatsinked Insulation 36.4 (mm) 45.9 (mm) 53.8 (mm) 66.5 (mm)

One Side

Bare can

6.60

5.20

4.44

3.60

Polyester

7.78

6.13

5.24

4.24

Both Sides

Bare can

4.95

3.87

3.30

2.66

Polyester

5.54

4.34

3.70

2.98

Typical Weight

Case AA - 19g, Case AB - 22g, Case AC - 26g, Case AD - 34g

Terminals

20 AWG copper wire with tin electroplate, 15 amps max

Case Material

Aluminum with a Stainless Steel Sleeve

Ripple Current Capability

The max ripple current capability is set by the target core temperature of

105 ºC. The Peak to Peak ac must be less than Vr/5 max.

Air Cooled

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

Heatsink Cooled

Temperature rise from the hottest internal 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 THAS attached to

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

Example

As an illustration, suppose you operate an noninsulated

THAS112M060AA0C in 85 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 capacitor and the heatsink, and the total thermal resistance

is 2.7 + 6.6 or 9.3 º C/W. The power which would heat the core to 105 °C is

(105 - 85)/9.3 or 2.15 W. For an ESR of 117 mΩ, 2 .15 W equates to a ripple

current of 4.28 A.

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

Type THAS,ThinPack, Aluminum Electrolytic Capacitor, 105 ºC