Surface Mount Aluminum Electrolytic Capacitors EEV Series, +105ºC Overview Applications KEMET's EEV Series of aluminum electrolytic surface mount capacitors are designed for applications requiring ultra-low impedance and a low profile vertical chip. Typical applications include audio/visual (AV), computer/monitor, communications, and switch mode power supplies (SMPS). Benefits • • • • Surface mount lead terminals Low profile vertical chip Ultra-low impedance +105°C/2,000 hours Part Number System EEV 226 M 6R3 A 9B AA Series Capacitance Code (pF) Tolerance Rated Voltage (VDC) Electrical Parameters Size Code Packaging Surface Mount Aluminum Electrolytic Digits 4 – 5 represent the first two digits of the capacitance value. The final digit indicates the number of zeros to be added. M = ±20% A = Standard See Dimension Table AA = Tape & Reel 6R3 = 6.3 010 = 10 016 = 16 025 = 25 035 = 35 One world. One KEMET © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 1 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Dimensions – Millimeters G F Size Code 9B 9D 9G 9H 9L 9M 9P Size Code 9B 9D 9G 9H 9L 9M 9P D L A/B C E Nominal Tolerance Nominal Tolerance Nominal Tolerance Nominal Tolerance Nominal Tolerance 4 5 6.3 6.3 8 8 10 ±0.5 ±0.5 ±0.5 ±0.5 ±0.5 ±0.5 ±0.5 5.4 5.4 5.4 7.7 6.2 10.2 10.2 +0.25/-0.1 +0.25/-0.1 +0.25/-0.1 ±0.3 ±0.3 ±0.3 ±0.3 4.3 5.3 6.6 6.6 8.3 8.3 10.3 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 5.5 6.5 7.8 7.8 9.5 10 13 Maximum Maximum Maximum Maximum Maximum Maximum Maximum 1.8 2.2 2.6 2.6 3.4 3.4 3.5 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 F G P W Nominal Tolerance Nominal Tolerance Nominal Tolerance Nominal Tolerance 0.3 0.3 0.3 0.3 0.3 0.3 0.3 Maximum Maximum Maximum Maximum Maximum Maximum Maximum 0.35 0.35 0.35 0.35 0.35 0.70 0.70 +0.15/-0.2 +0.15/-0.2 +0.15/-0.2 +0.15/-0.2 +0.15/-0.2 ±0.2 ±0.2 1.0 1.5 1.8 1.8 2.2 3.1 4.6 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 0.65 0.65 0.65 0.65 0.65 0.9 0.9 ±0.1 ±0.1 ±0.1 ±0.1 ±0.1 ±0.2 ±0.2 © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 2 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Performance Characteristics Item Performance Characteristics Capacitance Range Capacitance Tolerance Rated Voltage Life Test Operating Temperature Leakage Current 4.7 – 1,500 µF ±20% at 120 Hz / 20°C 6.3 – 35 VDC 2,000 hours (see conditions in Test Method & Performance) -40°C to +105°C I ≤ 0.01 CV or 3 µA C = rated capacitance (µF), V = rated voltage (VDC). Voltage applied for 2 minutes at 20°C. Compensation Factor of Ripple Current (RC) vs. Frequency Frequency 120 Hz 1 kHz 10 kHz 100 kHz Coefficient 0.70 0.80 0.90 1.00 Test Method & Performance Conditions Load Life Test Shelf Life Test Temperature 105°C 105°C Test Duration 2,000 hours 1,000 hours Ripple Current Maximum ripple current specified at 120 Hz 85°C No ripple current applied The sum of DC voltage and the peak AC voltage must not exceed the rated voltage of the capacitor. No voltage applied Voltage Performance Capacitance Change Dissipation Factor Leakage Current The following specifications will be satisfied when the capacitor is restored to 20°C: Within ±20% of the initial value Does not exceed 200% of the specified value Does not exceed specified value © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 3 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Environmental Compliance As an environmentally conscious company, KEMET is working continuously with improvements concerning the environmental effects of both our capacitors and their production. In Europe (RoHS Directive) and in some other geographical areas like China, legislation has been put in place to prevent the use of some hazardous materials, such as lead (Pb), in electronic equipment. All products in this catalog are produced to help our customers’ obligations to guarantee their products and fulfill these legislative requirements. The only material of concern in our products has been lead (Pb), which has been removed from all designs to fulfill the requirement of containing less than 0.1% of lead in any homogeneous material. KEMET will closely follow any changes in legislation world wide and makes any necessary changes in its products, whenever needed. Some customer segments such as medical, military and automotive electronics may still require the use of lead in electrode coatings. To clarify the situation and distinguish products from each other, a special symbol is used on the packaging labels for RoHS compatible capacitors. Because of customer requirements, there may appear additional markings such as LF = Lead Free or LFW = Lead Free Wires on the label. © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 4 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Table 1 – Ratings & Part Number Reference VDC VDC Surge Voltage Rated Capacitance 120 Hz 20°C (µF) Case Size D x L (mm) DF 120 Hz 20°C (tan δ %) RC 100 kHz 105°C (mA) Z 100 kHz 20°C (Ω) Part Number 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 10 10 10 10 10 10 10 10 10 10 10 10 16 16 16 16 16 16 16 16 16 16 16 16 16 25 25 25 25 25 25 25 25 25 25 25 35 35 35 35 35 35 35 35 35 35 35 35 8 8 8 8 8 8 8 8 8 8 8 8 8 8 13 13 13 13 13 13 13 13 13 13 13 13 20 20 20 20 20 20 20 20 20 20 20 20 20 32 32 32 32 32 32 32 32 32 32 32 44 44 44 44 44 44 44 44 44 44 44 44 22 33 47 47 100 100 150 220 330 330 470 680 1000 1500 22 33 33 47 100 150 220 220 330 470 470 1000 22 22 33 47 47 100 150 340 340 220 330 470 470 10 22 33 33 47 68 100 150 220 330 470 3.3 10 10 22 33 47 68 100 100 150 220 330 4 x 5.4 4 x 5.4 4 x 5.4 5 x 5.4 5 x 5.4 6.3 x 5.4 6.3 x 7.7 6.3 x 7.7 6.3 x 7.7 8 x 6.2 8 x 10.2 8 x 10.2 8 x 10.2 10 x 10.2 4 x 5.4 4 x 5.4 5 x 5.4 6.3 x 5.4 6.3 x 5.4 6.3 x 7.7 6.3 x 7.7 8 x 6.2 8 x 10.2 8 x 10.2 10 x 10.2 10 x 10.2 4 x 5.4 5 x 5.4 5 x 5.4 5 x 5.4 6.3 x 5.4 6.3 x 5.4 6.3 x 7.7 6.3 x 7.7 8 x 6.2 8 x 10.2 8 x 10.2 8 x 10.2 10 x 10.2 4 x 5.4 5 x 5.4 5 x 5.4 6.3 x 5.4 6.3 x 5.4 6.3 x 5.4 6.3 x 7.7 8 x 10.2 8 x 10.2 10 x 10.2 10 x 10.2 4 x 5.4 4 x 5.4 5 x 5.4 5 x 5.4 6.3 x 5.4 6.3 x 5.4 6.3 x 7.7 6.3 x 7.7 8 x 10.2 8 x 10.2 8 x 10.2 10 x 10.2 26 26 26 26 26 26 26 26 26 26 26 26 26 26 19 19 19 19 19 19 19 19 19 19 19 19 16 16 16 16 16 16 16 16 16 16 16 16 16 14 14 14 14 14 14 14 14 14 14 14 12 12 12 12 12 12 12 12 12 12 12 12 90 90 90 160 160 240 240 240 280 300 600 600 600 850 90 90 160 190 190 240 280 300 600 600 600 850 90 160 160 160 240 240 280 280 280 370 600 600 850 90 160 160 240 240 240 280 600 600 600 850 90 90 160 160 240 240 280 280 600 600 600 850 1.93 1.93 1.93 1.00 1.00 0.52 0.30 0.30 0.34 0.26 0.16 0.16 0.16 0.08 1.93 1.93 1.00 0.52 0.52 0.34 0.34 0.26 0.16 0.16 0.12 0.08 1.93 1.00 1.00 1.00 0.52 0.52 0.34 0.22 0.22 0.22 0.16 0.16 0.08 1.93 1.00 1.00 0.52 0.52 0.52 0.34 0.16 0.16 0.16 0.08 1.93 1.93 1.00 1.00 0.52 0.52 0.34 0.34 0.16 0.16 0.16 0.08 EEV226M6R3A9BAA EEV336M6R3A9BAA EEV476M6R3A9BAA EEV476M6R3A9DAA EEV107M6R3A9DAA EEV107M6R3A9GAA EEV157M6R3A9HAA EEV227M6R3A9HAA EEV337M6R3A9HAA EEV337M6R3A9LAA EEV477M6R3A9MAA EEV687M6R3A9MAA EEV108M6R3A9MAA EEV158M6R3A9PAA EEV226M010A9BAA EEV336M010A9BAA EEV336M010A9DAA EEV476M010A9GAA EEV107M010A9GAA EEV157M010A9HAA EEV227M010A9HAA EEV227M010A9LAA EEV337M010A9MAA EEV477M010A9MAA EEV477M010A9PAA EEV108M010A9PAA EEV226M016A9BAA EEV226M016A9DAA EEV336M016A9DAA EEV476M016A9DAA EEV476M016A9GAA EEV107M016A9GAA EEV157M016A9HAA EEV227M016A9HAA EEV227M016A9LAA EEV227M016A9MAA EEV337M016A9MAA EEV477M016A9MAA EEV687M016A9PAA EEV106M025A9BAA EEV226M025A9DAA EEV336M025A9DAA EEV336M025A9GAA EEV476M025A9GAA EEV686M025A9GAA EEV107M025A9HAA EEV157M025A9MAA EEV227M025A9MAA EEV337M025A9PAA EEV477M025A9PAA EEV335M035A9BAA EEV106M035A9BAA EEV106M035A9DAA EEV226M035A9DAA EEV336M035A9GAA EEV476M035A9GAA EEV686M035A9HAA EEV107M035A9HAA EEV107M035A9MAA EEV157M035A9MAA EEV227M035A9PAA EEV337M035A9PAA VDC VDC Surge Rated Capacitance Case Size DF RC Z Part Number © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 5 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Mounting Positions (Safety Vent) In operation, electrolytic capacitors will always conduct a leakage current which causes electrolysis. The oxygen produced by electrolysis will regenerate the dielectric layer but, at the same time, the hydrogen released may cause the internal pressure of the capacitor to increase. The overpressure vent (safety vent) ensures that the gas can escape when the pressure reaches a certain value. All mounting positions must allow the safety vent to work properly. Installing • A general principle is that lower-use temperatures result in a longer, useful life of the capacitor. For this reason, it should be ensured that electrolytic capacitors are placed away from heat-emitting components. Adequate space should be allowed between components for cooling air to circulate, particularly when high ripple current loads are applied. In any case, the maximum category temperature must not be exceeded. • Do not deform the case of capacitors or use capacitors with a deformed case. • Verify the correct polarization of the capacitor on the board. It is recommended that capacitors always be mounted with the safety device uppermost or in the upper part of the capacitor. • If the capacitors are stored for a long time, the leakage current must be verified. If the leakage current is superior to the value listed in this catalog, the capacitors must be reformed. In this case, they can be reformed by application of the rated voltage through a series resistor approximately 1 kΩ for capacitors with VR ≤ 160 V (5 W resistor) . • In the case of capacitors connected in series, a suitable voltage sharing must be used. In the case of balancing resistors, the approximate resistance value can be calculated as: R = 60/C KEMET recommends, nevertheless, to ensure that the voltage across each capacitor does not exceed its rated voltage. Application and Operation Guidelines Electrical Ratings: Capacitance (ESC) Capacitance is measured by applying an alternate voltage of ≤ 0.5 V at a frequency of 120 or 100 Hz and 20°C. Temperature Dependence of the Capacitance Capacitance of an electrolytic capacitor depends upon temperature: with decreasing temperature the viscosity of the electrolyte increases, thereby reducing its conductivity. Capacitance will decrease if temperature decreases. Furthermore, temperature drifts cause armature dilatation and, therefore, capacitance changes (up to 20% depending on the series considered, from 0 to 80°C). This phenomenon is more evident for electrolytic capacitors than for other types. © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 6 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Frequency Dependence of the Capacitance Effective capacitance value is derived from the impedance curve, as long as impedance is still in the range where the capacitance component is dominant. 1 2π fZ C= C = Capacitance (F) f = Frequency (Hz) Z = Impedance (Ω) Dissipation Factor tan δ (DF) Dissipation Factor tan δ is the ratio between the active and reactive power for a sinusoidal waveform voltage. It can be thought of as a measurement of the gap between an actual and ideal capacitor. reactive δ ideal actual active Tan δ is measured with the same set-up used for the series capacitance ESC. tan δ = ω x ESC x ESR where: ESC = Equivalent Series Capacitance ESR = Equivalent Series Resistance Equivalent Series Inductance (ESL) Self inductance or Equivalent Series Inductance results from the terminal configuration and internal design of the capacitor. Capacitor Equivalent Internal Circuit Equivalent Series Capacitance (ESC) Equivalent Series Resistance (ESR) Equivalent Series Inductance (ESL) © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 7 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Co L Re Equivalent Series Resistance (ESR) Equivalent Series Resistance is the resistive component of the equivalent series circuit. ESR value depends on frequency and temperature and is related to the tan δ by the following equation: Ce ESR = tan δ 2πf ESC ESR = Equivalent Series Resistance (Ω) tan δ = Dissipation Factor ESC = Equivalent Series Capacitance (F) f = Frequency (Hz) Tolerance limits of the rated capacitance must be taken into account when calculating this value. Impedance (Z) L Re Co Impedance of an electrolytic capacitor results from a circuit formed by the following individual equivalent series components: Co Re L Ce Ce Co = Aluminum oxide capacitance (surface and thickness of the dielectric) Re = Resistance of electrolyte and paper mixture (other resistances not depending on the frequency are not considered: tabs, plates, etc.) Ce = Electrolyte soaked paper capacitance L = Inductive reactance of the capacitor winding and terminals Impedance of an electrolytic capacitor is not a constant quantity that retains its value under all conditions; it changes depending on frequency and temperature. Impedance as a function of frequency (sinusoidal waveform) for a certain temperature can be represented as follows: Z [ohm] 1000 100 1/ω ω Ce 10 B Re 1 0.1 ωL A 1/ω ω Co 0.1 1 10 C 100 1000 10000 F [KHz] © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 8 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC • Capacitive reactance predominates at low frequencies • With increasing frequency, capacitive reactance Xc = 1/ωCo decreases until it reaches the order of magnitude of electrolyte resistance Re(A) • At even higher frequencies, resistance of the electrolyte predominates: Z = Re (A - B) • When the capacitor’s resonance frequency is reached (ω0), capacitive and inductive reactance mutually cancel each other 1/ωCe = ωL, ω0 = C√1/LCe • Above this frequency, inductive reactance of the winding and its terminals (XL = Z = ωL) becomes effective and leads to an increase in impedance Generally speaking, it can be estimated that Ce ≈ 0.01 Co. Impedance as a function of frequency (sinusoidal waveform) for different temperature values can be represented as follows (typical values): Z (oh m ) 10 µF 1000 100 -4 0°C 10 2 0°C 8 5°C 1 0.1 0.1 1 10 100 1000 1 0 0 00 F (K HElectrolyte z) Re is the most temperature-dependent component of an electrolytic capacitor equivalent circuit. resistivity will decrease if temperature rises. In order to obtain a low impedance value throughout the temperature range, Re must be as little as possible. However, Re values that are too low indicate a very aggressive electrolyte, resulting in a shorter life of the electrolytic capacitor at high temperatures. A compromise must be reached. Leakage Current (LC) Due to the aluminum oxide layer that serves as a dielectric, a small current will continue to flow even after a DC voltage has been applied for long periods. This current is called leakage current. A high leakage current flows after applying voltage to the capacitor then decreases in a few minutes, e.g., after prolonged storage without any applied voltage. In the course of continuous operation, the leakage current will decrease and reach an almost constant value. After a voltage-free storage the oxide layer may deteriorate, especially at high temperature. Since there are no leakage currents to transport oxygen ions to the anode, the oxide layer is not regenerated. The result is that a higher than normal leakage current will flow when voltage is applied after prolonged storage. As the oxide layer is regenerated in use, the leakage current will gradually decrease to its normal level. © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 9 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC The relationship between the leakage current and voltage applied at constant temperature can be shown schematically as follows: I VR VS VF V Where: VF = Forming voltage If this level is exceeded, a large quantity of heat and gas will be generated and the capacitor could be damaged. VR = Rated voltage This level represents the top of the linear part of the curve. VS = Surge voltage This lies between VR and VF. The capacitor can be subjected to VS for short periods only. Electrolytic capacitors are subjected to a reforming process before acceptance testing. The purpose of this preconditioning is to ensure that the same initial conditions are maintained when comparing different products. Ripple Current (RC) The maximum ripple current value depends on: • Ambient temperature • Surface area of the capacitor (heat dissipation area) tan δ or ESR • Frequency The capacitor’s life depends on the thermal stress. Frequency Dependence of the Ripple Current ESR and, thus, the tan δ depend on the frequency of the applied voltage. This indicates that the allowed ripple current is also a function of the frequency. Temperature Dependence of the Ripple Current The data sheet specifies maximum ripple current at the upper category temperature for each capacitor. © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 10 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Expected Life Calculation Expected life depends on operating temperature according to the following formula: L = Lo x 2 (To-T)/10 Where: L: Expected life Lo: Load life at maximum permissible operating temperature T: Actual operating temperature To: Maximum permissible operating temperature This formula is applicable between 40°C and To. Packaging Quantities Size Code Diameter (mm) Length (mm) Reel Quantity Box Quantity (4 Reels per box) 9B 4 5 6.3 6.3 8 8 10 5.4 5.4 5.4 7.7 6.2 10.2 10.2 2000 1000 1000 1000 1000 500 500 20000 10000 10000 10000 10000 4000 4000 9D 9G 9H 9L 9M 9P Standard Marking for Surface Mount Types Capacitance (µF) Rated Voltage (VDC) Series Indentification Negative Polarity: Black Row 100 X 50 Date Code (YMM) 201 Note: 6.3 V rated voltage shall be marked as 6 V, but 6.3 V shall be assured. • • • • Series Rated voltage (VDC) Capacitance (µF) Negative polarity: black line © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 11 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Soldering Process The soldering conditions should be within the specified conditions below: Do not dip the capacitors body into the melted solder. Flux should only be applied to the capacitors terminals Vapour heat transfer systems are not recommended. The system should be thermal, such as infra-red radiation or hot blast Observe the soldering conditions as shown below. Do not exceed these limits and avoid repeated reflowing Reflow Soldering T0 Pre-heat T1 T2 T3 Lead Free Reflow Soldering Temperature (°C) Maximum Time (Seconds) 20 to 140 140 to 180 180 to 140 > 200 230 60 150 100 60 20 Temperature (°C) Maximum Time (Seconds) 20 to 160 160 to 190 190 to 180 > 220 60 120 90 60 T0 Pre-heat T1 T2 Size T3 Φ4 ~ Φ5 (4 – 50 V) Φ6.3 ~ Φ10 (4 – 50 V) Φ4 ~ Φ10 (63 – 100 V) © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com Temperature Maximum Time (°C) (Seconds) 250 260 250 250 10 5 5 5 A4002_EEV • 2/21/2014 12 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Lead Taping & Packaging Case Size (mm) Reel H D ±0.2 ±1.0 21 21 21 21 21 21 21 23 23 23 14 14 18 18 18 26 26 34 34 46 4 x 5.4 5 x 5.4 6.3 x 5.4 6.3 x 7.7 8 x 6.2 380 8 x 10.2 W ±0.8 10 x 10.2 12.5 x 13.5 12.5 x 16 16 x 16.5 D H W Taping for Automatic Insertion Machines Feeding hole Chip pocket Ø D0 P2 P0 E t1 B W F A t2 P1 Tape running direction Chip component Dimensions (mm) W A B P0 P1 P2 F D0 E t1 t2 Tolerance Nominal Nominal Nominal ±0.1 ±0.1 ±0.1 Nominal ±0.1 Nominal Nominal Nominal 4 x 5.4 5 x 5.4 6.3 x 5.4 6.3 x 7.7 8 x 6.2 8 x 10.2 10 x 10.2 12.5 x 13.5 12.5 x 16 16 x 16.5 12 12 16 16 16 24 24 32 32 44 4.7 5.7 7 7 8.7 8.7 10.7 13.4 13.4 17.5 4.7 5.7 7 7 8.7 8.7 10.7 13.4 13.4 17.5 4 4 4 4 4 4 4 4 4 4 8 12 12 12 12 16 16 24 24 28 2 2 2 2 2 2 2 2 2 2 5.5 5.5 7.5 7.5 7.5 11.5 11.5 14.2 14.2 20.2 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.75 1.75 1.75 1.75 1.75 1.75 1.75 1.75 1.75 1.75 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5 5.8 5.8 5.8 5.8 6.8 11 11 14 17.5 17.5 © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 13 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Construction The manufacturing process begins with the anode foil being electrochemically etched to increase the surface area and then “formed” to produce the aluminum oxide layer. Both the anode and cathode foils are then interleaved with absorbent paper and wound into a cylinder. During the winding process, aluminum tabs are attached to each foil to provide the electrical contact. Extended cathode Anode foil The deck, complete with terminals, is attached to the tabs and then folded down to rest on top of the winding. The complete winding is impregnated with electrolyte before being housed in a suitable container, usually an aluminum can, and sealed. Throughout the process, all materials inside the housing must be maintained at the highest purity and be compatible with the electrolyte. Each capacitor is aged and tested before being sleeved and packed. The purpose of aging is to repair any damage in the oxide layer and thus reduce the leakage current to a very low level. Aging is normally carried out at the rated temperature of the capacitor and is accomplished by applying voltage to the device while carefully controlling the supply current. The process may take several hours to complete. Damage to the oxide layer can occur due to variety of reasons: • Slitting of the anode foil after forming • Attaching the tabs to the anode foil • Minor mechanical damage caused during winding A sample from each batch is taken by the quality department after completion of the production process. The following tests are applied and may be varied at the request of the customer. In this case the batch, or special procedure, will determine the course of action. Electrical: • Leakage current • Capacitance • ESR • Impedance • Tan Delta Mechanical/Visual: • Overall dimensions • Torque test of mounting stud • Print detail • Box labels • Packaging, including packed quantity © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com Foil tabs Tissues Cathode foil Etching Forming Winding Decking Impregnation Assembly Aging Testing Sleeving Packing A4002_EEV • 2/21/2014 14 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC KEMET Corporation World Headquarters Europe Asia Southern Europe Paris, France Tel: 33-1-4646-1006 Northeast Asia Hong Kong Tel: 852-2305-1168 Mailing Address: P.O. Box 5928 Greenville, SC 29606 Sasso Marconi, Italy Tel: 39-051-939111 Shenzhen, China Tel: 86-755-2518-1306 www.kemet.com Tel: 864-963-6300 Fax: 864-963-6521 Central Europe Landsberg, Germany Tel: 49-8191-3350800 Corporate Offices Fort Lauderdale, FL Tel: 954-766-2800 Kamen, Germany Tel: 49-2307-438110 North America Northern Europe Bishop’s Stortford, United Kingdom Tel: 44-1279-460122 2835 KEMET Way Simpsonville, SC 29681 Southeast Lake Mary, FL Tel: 407-855-8886 Espoo, Finland Tel: 358-9-5406-5000 Northeast Wilmington, MA Tel: 978-658-1663 Beijing, China Tel: 86-10-5829-1711 Shanghai, China Tel: 86-21-6447-0707 Taipei, Taiwan Tel: 886-2-27528585 Southeast Asia Singapore Tel: 65-6586-1900 Penang, Malaysia Tel: 60-4-6430200 Bangalore, India Tel: 91-806-53-76817 Central Novi, MI Tel: 248-306-9353 West Milpitas, CA Tel: 408-433-9950 Mexico Guadalajara, Jalisco Tel: 52-33-3123-2141 Note: KEMET reserves the right to modify minor details of internal and external construction at any time in the interest of product improvement. KEMET does not assume any responsibility for infringement that might result from the use of KEMET Capacitors in potential circuit designs. KEMET is a registered trademark of KEMET Electronics Corporation. © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 15 Surface Mount Aluminum Electrolytic Capacitors – EEV Series, +105ºC Disclaimer All product specifications, statements, information and data (collectively, the “Information”) in this datasheet are subject to change. The customer is responsible for checking and verifying the extent to which the Information contained in this publication is applicable to an order at the time the order is placed. All Information given herein is believed to be accurate and reliable, but it is presented without guarantee, warranty, or responsibility of any kind, expressed or implied. Statements of suitability for certain applications are based on KEMET Electronics Corporation’s (“KEMET”) knowledge of typical operating conditions for such applications, but are not intended to constitute – and KEMET specifically disclaims – any warranty concerning suitability for a specific customer application or use. The Information is intended for use only by customers who have the requisite experience and capability to determine the correct products for their application. Any technical advice inferred from this Information or otherwise provided by KEMET with reference to the use of KEMET’s products is given gratis, and KEMET assumes no obligation or liability for the advice given or results obtained. Although KEMET designs and manufactures its products to the most stringent quality and safety standards, given the current state of the art, isolated component failures may still occur. Accordingly, customer applications which require a high degree of reliability or safety should employ suitable designs or other safeguards (such as installation of protective circuitry or redundancies) in order to ensure that the failure of an electrical component does not result in a risk of personal injury or property damage. Although all product–related warnings, cautions and notes must be observed, the customer should not assume that all safety measures are indicted or that other measures may not be required. © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com A4002_EEV • 2/21/2014 16