550D Vishay Sprague Solid-Electrolyte TANTALEX® Capacitors for High Frequency Power Supplies FEATURES • Hermetically-sealed, axial-lead solid tantalum capacitors • Small size and long life • Exceptional capacitance stability and excellent resistance to severe environmental conditions • The military equivalent is the CSR21 which is qualified to MIL-C-39003/09 APPLICATIONS Designed for power supply filtering applications at above 100kHz PERFORMANCE CHARACTERISTICS At + 85°C: Leakage current shall not exceed 10 times the values listed in the Standard Ratings Tables. At +125°C: Leakage current shall not exceed 15 times the values listed in the Standard Ratings Tables. Life Test: Capacitors shall withstand rated DC voltage applied at + 85°C for 2000 hours or derated DC voltage applied at + 125°C for 1000 hours. Following the life test: 1. DCL shall not exceed 125% of the initial requirement. 2. Dissipation Factor shall meet the initial requirement. 3. Change in capacitance shall not exceed ± 5%. Operating Temperature: - 55°C to + 85°C. (To + 125°C with voltage derating.) Capacitance Tolerance: At 120 Hz, + 25°C. ± 20% and ± 10% standard. ± 5% available as a special. Dissipation Factor: At 120 Hz, + 25°C. Dissipation factor, as determined from the expression 2πfRC, shall not exceed the values listed in the Standard Ratings Tables. DC Leakage Current (DCL Max.): At + 25°C: Leakage current shall not exceed the values listed in the Standard Ratings Tables. ORDERING INFORMATION 550D MODEL 006 2 R DC VOLTAGE CASE STYLE NUMBER RATING AT + 85°C CODE This is expressed in This is expressed in picofarads. The X0 = ± 20% See Ratings 2 = Insulated volts. To complete the first two digits are the significant figures. X9 = ± 10% sleeve. and Case three-digit block, zeros Codes Table. The third is the number of zeros to X5 = ± 5% precede the voltage follow. Standard capacitance ratings Special Order. rating. are in accordance with EIA preferred number series wherever possible. 157 CAPACITANCE X0 CAPACITANCE TOLERANCE T PACKAGING T = Tape and Reel DIMENSIONS in inches [millimeters] 1.500 ± 0.250 [38.10 ± 6.35] 1.500 ± 0.250 [38.10 ± 6.35] D Dia. L 0.047 [1.19] Max. Solid Tinned Leads 0.125 [3.18] Max. J Max. WITH INSULATING SLEEVE* LEAD SIZE CASE CODE D L J (MAX.) AWG NO. NOM. DIA. R 0.289 ± 0.016 [7.34 ± 0.41] 0.686 ± 0.031 [17.42 ± 0.79] 0.822 [20.88] 22 0.025 [0.64] S 0.351 ± 0.016 [8.92 ± 0.41] 0.786 ± 0.031 [19.96 ± 0.79] 0.922 [23.42] 22 0.025 [0.64] *When a shrink-fitted insulation is used, it shall lap over the ends of the capacitor body. www.vishay.com 24 For technical questions, contact [email protected] Document Number: 40017 Revision 11-Nov-04 550D TANTALEX® Solid-Electrolyte Capacitors for High Frequency Power Supplies Vishay Sprague STANDARD RATINGS CAPACITANCE (µF) CASE CODE 150 180 220 270 330 R R S S S 82 100 120 150 180 220 R R R S S S PART NUMBER* CAP. TOL. ± 20% PART NUMBER* CAP. TOL. ± 10% MAX. DCL @ + 25°C (µA) MAX. DF @ + 25°C 1kHz (%) MAX. ESR @ + 25°C 100kHz (Ohms) 10 10 10 10 12 0.065 0.060 0.055 0.050 0.045 8 8 8 8 8 10 0.085 0.075 0.070 0.065 0.060 0.055 6 6 6 8 8 8 0.100 0.095 0.085 0.075 0.070 0.065 5 5 5 6 6 6 6 8 0.145 0.130 0.120 0.110 0.100 0.095 0.085 0.075 6 WVDC @ + 85°C, SURGE = 8 V . . . 4 WVDC @ + 125°C, SURGE = 5 V 550D157X0006R2 550D187X0006R2 550D227X0006S2 550D277X0006S2 550D337X0006S2 550D157X9006R2 550D187X9006R2 550D227X9006S2 550D277X9006S2 550D337X9006S2 9 11 12 13 15 10 WVDC @ + 85°C, SURGE = 13 V . . . 7 WVDC @ + 125°C, SURGE = 9 V 550D826X0010R2 550D107X0010R2 550D127X0010R2 550D157X0010S2 550D187X0010S2 550D227X0010S2 550D826X9010R2 550D107X9010R2 550D127X9010R2 550D157X9010S2 550D187X9010S2 550D227X9010S2 8 10 12 15 18 20 15 WVDC @ + 85°C, SURGE = 20 V . . . 10 WVDC @ + 125°C, SURGE = 12 V 56 68 82 100 120 150 R R S S S S 550D566X0015R2 550D686X0015R2 550D826X0015S2 550D107X0015S2 550D127X0015S2 550D157X0015S2 550D566X9015R2 550D686X9015R2 550D826X9015S2 550D107X9015S2 550D127X9015S2 550D157X9015S2 8 10 12 15 18 20 20 WVDC @ + 85°C, SURGE = 26 V . . . 13 WVDC @ + 125°C, SURGE = 16 V 27 33 39 47 56 68 82 100 R R R R S S S S 550D276X0020R2 550D336X0020R2 550D396X0020R2 550D476X0020R2 550D566X0020S2 550D686X0020S2 550D826X0020S2 550D107X0020S2 550D276X9020R2 550D336X9020R2 550D396X9020R2 550D476X9020R2 550D566X9020S2 550D686X9020S2 550D826X9020S2 550D107X9020S2 5 7 8 9 11 14 16 20 35 WVDC @ + 85°C, SURGE = 46 V . . . 23 WVDC @ + 125°C, SURGE = 28 V 8.2 10 12 15 18 22 27 33 39 47 R R R R R R S S S S 550D825X0035R2 550D106X0035R2 550D126X0035R2 550D156X0035R2 550D186X0035R2 550D226X0035R2 550D276X0035S2 550D336X0035S2 550D396X0035S2 550D476X0035S2 550D825X9035R2 550D106X9035R2 550D126X9035R2 550D156X9035R2 550D186X9035R2 550D226X9035R2 550D276X9035S2 550D336X9035S2 550D396X9035S2 550D476X9035S2 3 4 4 5 6 8 9 11 14 16 4 4 4 4 4 4 4 5 5 5 0.250 0.230 0.210 0.190 0.175 0.160 0.145 0.130 0.120 0.110 3 3 3 3 3 3 4 4 0.300 0.275 0.250 0.230 0.210 0.190 0.175 0.160 50 WVDC @ + 85°C, SURGE = 65 V . . . 33 WVDC @ + 125°C, SURGE = 40 V 550D565X0050R2 R 550D565X9050R2 5.6 550D685X0050R2 R 550D685X9050R2 6.8 550D825X0050R2 R 550D825X9050R2 8.2 550D106X0050R2 R 550D106X9050R2 10.0 550D126X0050R2 R 550D126X9050R2 12.0 550D156X0050R2 R 550D156X9050R2 15.0 550D186X0050R2 R 550D186X9050R2 18.0 550D226X0050S2 S 550D226X9050S2 22.0 *Insert capacitance tolerance code "X5" for ± 5% units (special order). Document Number: 40017 Revision 11-Nov-04 4 4 5 5 6 8 9 11 For technical questions, contact [email protected] www.vishay.com 25 550D Solid-Electrolyte TANTALEX® Capacitors for High Frequency Power Supplies Vishay Sprague TAPE AND REEL PACKAGING in inches [millimeters] "A" 13 [330.2] STANDARD REEL TAPE SPACING B COMPONENT SPACING 1.126 to 3.07 [28.6 to 78.0] I.D. REEL HUB A 1.374 to 3.626 [34.9 to 92.1] 0.047 [1.19] MAX. OFF CENTER (1.a) 0.125 [3.18] MAX. 0.625 ± 0.062 [15.88 ± 1.57] DIA. THRU HOLE 0.250 [6.35] (3.b) "A" LABEL (4.a) 0.750 [19.05] 0.031 [0.79] (3.f) (BOTH SIDES) ( 3.f) SECTION "A" - "A" TYPE 550D UNITS WITH INSULATING SLEEVE CASE CODE D COMPONENT SPACING LEAD SIZE J (MAX.) AWG NO. NOM. DIA. TAPE SPACING UNITS PER REEL A B R 0.289 ± 0.016 0.686 ± 0.031 [7.34 ± 0.41] [17.42 ± 0.79] 0.822 [20.88] 22 0.025 [0.64] 0.400 ± 0.015 [10.16 ± 0.38] 2.875 ± 0.062 [73.03 ± 1.57] 500 S 0.351 ± 0.016 0.786 ± 0.031 [8.92 ± 0.41] [19.96 ± 0.79] 0.922 [23.42] 22 0.025 [0.64] 0.400 ± 0.015 [10.16 ± 0.38] 2.875 ± 0.062 [73.03 ± 1.57] 500 L STANDARD REEL PACKAGING INFORMATION 1. Component Leads: a. Component leads shall not be bent beyond 0.047" [1.19mm] maximum from their nominal position when measured from the leading edge of the component lead at the inside tape edge and at the lead egress from the component. b. The 'C' dimension shall be governed by the overall length of the reel packaged component. The distance between flanges shall be 0.125" to 0.250" [3.18mm to 6.35mm] greater than the overall component length. 2. Orientation: a. All polarized components must be oriented to one direction. The cathode lead tape shall be a color and the anode lead tape shall be white. 3. Reeling: a. Components on any reel shall not represent more t h a n two date codes when date code identification is required. b. Component leads shall be positioned between pairs of 0.250" [6.35mm] tape. c. The disposable reels have hubs with corrugated fiber board flanges and core or equivalent. d. A minimum of 12" [304.8mm] leader of tape shall be provided before the first and after the last component on the reel. e. 50 or 60 lb. Kraft paper must be wound between layer of components as far as necessary for component protection. Width of paper to be 0.062" to 0.250" [1.57mm to 6.35mm] less than the 'C' dimension of the reel. www.vishay.com 26 f. A row of components must be centered between tapes ± 0.047" [1.19mm]. In addition, individual components may deviate from center of component row ± 0.031" [0.79mm]. g. Staples shall not be used for splicing. Not more than 4 layers of tape shall be used in any splice area and no tape shall be offset from another by more than 0.031" [0.79mm] non-cumulative. Tape splices shall overlap at least 6" [152.4mm] for butt joints and at least 3" [76.2mm] for lap joints and shall not be weaker than unspliced tape. Universal splicing clips may also be used. h. Quantity per reel shall be controlled so that tape components and cover shall not extend beyond the smallest dimension of the flange (either across flats or diameter). Once the quantity per reel for each part number has been established, future orders for that part number shall be packaged in that quantity. When order or release quantity is less than the established quantity, a standard commercial pack is to be used. i. A maximum of 0.25% of the components per reel quantity may be missing without consecutive missing components. j. Adequate protection must be provided to prevent physical damage to both reel and components during shipment and storage. 4. Marking: a. Minimum reel and carton marking shall consist of the following: Customer Part Number, Purchase Order No., Quantity, Package Date, Manufacturer's name, Electrical Value, Date Code, Vishay Sprague Part Number and Country of Origin. For technical questions, contact [email protected] Document Number: 40017 Revision 11-Nov-04 550D Vishay Sprague TYPICAL CURVES @ + 25°C, IMPEDANCE AND ESR VS FREQUENCY 10 10 IMPEDANCE IMPEDANCE ESR ESR 1 1 OHMS OHMS 330µF, 6 V 180µF, 6 V 120µF, 10 V 120µF, 10 V 180µF, 6 V 0.1 220µF, 10 V 0.1 220µF, 10 V 330µF, 6 V .01 .01 100 1K 10K 100K FREQUENCY IN HERTZ 1M 10M 100 10 1K 10K 100K FREQUENCY IN HERTZ 1M 10M 10 IMPEDANCE IMPEDANCE ESR ESR 1 1 100µF, 20 V OHMS OHMS 150µF, 15 V 68µF, 15 V 68µF, 15 V 0.1 47µF, 20 V 47µF, 20 V 0.1 150µF, 15 V 100µF, 20 V .01 .01 100 1K 10K 100K FREQUENCY IN HERTZ 1M 10M 100 10 1K 10K 100K FREQUENCY IN HERTZ 1M 10M 10 IMPEDANCE 47µF, 35 V IMPEDANCE 22µF, 50 V ESR ESR 1 22µF, 35 V OHMS OHMS 1 22µF, 35 V 0.1 18µF, 50 V 18µF, 50 V 0.1 22µF, 50 V 47µF, 35 V .01 .01 100 1K Document Number: 40017 Revision 11-Nov-04 10K 100K FREQUENCY IN HERTZ 1M 10M 100 1K For technical questions, contact [email protected] 10K 100K 1M 10M FREQUENCY IN HERTZ www.vishay.com 27 550D Vishay Sprague PERFORMANCE CHARACTERISTICS 1. Operating Temperature: Capacitors are designed to operate over the temperature range of - 55°C to +85°C with no derating. 1.1 Capacitors may be operated up to + 125°C with voltage derating to two-thirds the + 85°C rating. + 85°C Rating WORKING SURGE VOLTAGE VOLTAGE (V) (V) 6 10 15 20 35 50 3. 3.1 3.2 8 13 20 26 46 65 4 7 10 13 23 33 5 9 12 16 28 40 Leakage Current: Capacitors shall be stabilized at the rated temperature for 30 minutes. Rated voltage shall be applied to capacitors for 5 minutes using a steady source of power (such as a regulated power supply) with 1000 ohm resistor connected in series with the capacitor under test to limit the charging current. Leakage current shall then be measured. Note that the leakage current varies with applied voltage. See graph below for the appropriate adjustment factor. TYPICAL LEAKAGE CURRENT FACTOR RANGE At + 25°C DC Working Voltage: The DC working voltage is the maximum operating voltage for continuous duty at the rated temperature. 0.3 Surge Voltage: The surge DC rating is the maximum voltage to which the capacitors may be subjected under any conditions, including transients and peak ripple at the highest line voltage. Surge Voltage Test: Capacitors shall withstand the surge voltage applied in series with a 33 ohm ± 5% resistor at the rate of one-half minute on, one-half minute off, at + 85°C, for 1000 successive test cycles. Following the surge voltage test, the dissipation factor and the leakage current shall meet the initial requirements; the capacitance shall not have changed more than ± 10%. 4. Capacitance Tolerance: The capacitance of all capacitors shall be within the specified tolerance limits of the nominal rating. 4.1 Capacitance measurements shall be made by means of polarized capacitance bridge. The polarizing voltage shall be of such magnitude that there shall be no reversal of polarity due to the AC component. The maximum voltage applied to capacitors during measurement shall be 2 volts rms at 1000Hz at + 25°C. If the AC voltage applied is less than one-half volt rms, no DC bias is required. Measurement accuracy of the bridge shall be within ± 2%. 1.0 0.8 0.7 0.6 0.5 0.4 LEAKAGE CURRENT FACTOR 2. + 125°C Rating WORKING SURGE VOLTAGE VOLTAGE (V) (V) 7. 0.2 0.1 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0.008 0.007 0.006 0.005 0.004 0.003 5. Capacitance Change With Temperature: The capacitance change with temperature shall not exceed the following percentage of the capacitance measured at + 25% - 55°C - 10% 6. 6.1 + 85°C + 8% + 125°C + 12% Dissipation Factor: The dissipation factor, determined from the expression 2πfRC, shall not exceed values listed in the Standard Ratings Table. Measurements shall be made by the bridge method at, or referred to, a frequency of 1000Hz and a temperature of + 25°C. www.vishay.com 28 0.002 0.001 0 10 20 30 40 50 60 70 80 90 100 PERCENT OF RATED VOLTAGE 7.1 7.2 7.3 8. 8.1 At + 25°C, the leakage current shall not exceed the value listed in the Standard Ratings Table. At + 85°C, the leakage current shall not exceed 10 times the value listed in the Standard Ratings Table. At + 125°C, the leakage current shall not exceed 15 times the value listed in the Standard Ratings Table. Life Test: Capacitors shall withstand rated DC voltage applied at + 85°C for 2000 hours or rated DC voltage applied at + 125°C for 1000 hours. Following the life test, the dissipation factor shall meet the initial requirement; the capacitance change shall not exceed ± 2%; the leakage current shall not exceed 125% of the original requirement. For technical questions, contact [email protected] Document Number: 40017 Revision 11-Nov-04 550D Vishay Sprague 9. Shelf Test: Capacitors shall withstand a shelf test for 5000 hours at a temperature of + 85°C, with no voltage applied. 10.3.7 Following the high frequency vibration test, capacitors shall meet the original limits for capacitance, dissipation factor and leakage current. 9.1 Following the shelf test, the leakage current shall meet the initial requirement; the dissipation factor shall not exceed 150% of the initial requirement; the capacitance change shall not exceed ± 5%. 11. Acceleration Test: 11.1 Capacitors shall be rigidly mounted by means of suitable brackets. 10. Vibration Tests: Capacitors shall be subjected to vibration tests in accordance with the following criteria. 11.2 Capacitors shall be subjected to a constant acceleration of 100g for a period of 10 seconds in each of 2 mutually perpendicular planes. 10.1 Capacitors shall be secured for test by means of a rigid mounting using suitable brackets. 11.2.1 The direction of motion shall be parallel to and perpendicular to the cylindrical axis of the capacitors. 10.2 Low Frequency Vibration: Vibration shall consist of a simple harmonic motion having an amplitude of 0.03" [0.76] and a maximum total excursion of 0.06" [1.52], in a direction perpendicular to the major axis of the capacitor. 11.3 10.2.1 Vibration frequency shall be varied uniformly between the approximate limits of 10Hz to 55Hz during a period of approximately one minute, continuously for one and one-half hours. Rated DC voltage shall be applied during acceleration test. 11.3.1 A cathode ray oscilloscope or other comparable means shall be used in determining electrical intermittency during test. The AC voltage applied shall not exceed 2 volts rms. 11.4 Electrical tests shall show no evidence of intermittent contacts, open circuits or short circuits during these tests. 11.5 There shall be no mechanical damage to these capacitors as a result of these tests. 11.6 Following the acceleration test, capacitors shall meet the original limits for capacitance, dissipation factor and leakage current. 10. Shock Test: 10.2.4 Following the low frequency vibration test, capacitors shall meet the original requirements for leakage current and dissipation factor; capacitance change shall not exceed ± 5% of the original measured value. 12.1 Capacitors shall be rigidly mounted by means of suitable brackets. The test load shall be distributed uniformly on the test platform to minimize the effects of unbalanced loads. 10.3 12.1.1 Test equipment shall be adjusted to produce a shock of 100g peak with a duration of 6 mS and a sawtooth waveform at a velocity change of 9.7 feet/second. 10.2.2 A cathode ray oscilloscope or other comparable means shall be used in determining electrical intermittency during the final 30 minutes of the test. The AC voltage applied shall not exceed 2 volts rms. 10.2.3 Electrical tests shall show no evidence of intermittent contacts, open circuits or short circuits during these tests. High Frequency Vibration: Vibration shall consist of a simple harmonic motion having an amplitude of 0.06" [1.52] ± 10% maximum total excursion or 20 g peak, whichever is less. 10.3.1 Vibration Frequency shall be varied logarithmically from 50Hz to 2000Hz and return to 50Hz during a cycle period of 20 minutes. 10.3.2 The vibration shall be applied for 4 hours in each of 2 directions, parallel and perpendicular to the major axis of the capacitors. 10.3.3 Rated DC voltage shall be applied during the vibration cycling. 10.3.4 A cathode ray oscilloscope or other comparable means shall be used in determining electrical intermittency during test. The AC voltage applied shall not exceed 2 volts rms. 10.3.5 Electrical tests shall show no evidence of intermittent contacts, open circuits or short circuits during these tests. 10.3.6 There shall be no mechanical damage to these capacitors as a result of these tests. Document Number: 40017 Revision 11-Nov-04 12.2 Capacitors shall be subjected to 3 shocks applied in each of 3 directions corresponding to the 3 mutually perpendicular axes of the capacitors. 12.3 Rated DC voltage shall be applied to capacitors during test. 12.3.1 A cathode ray oscilloscope or other comparable means shall be used in determining electrical intermittency during test. The AC voltage applied shall not exceed 2 volts rms. 12.4 Electrical tests shall show no evidence of intermittent contacts, open circuits or short circuits during these tests. 12.5 There shall be no mechanical damage to these capacitors as a result of these tests. 12.6 Following the shock test, capacitors shall meet the original limits for capacitance, dissipation factor and leakage current. For technical questions, contact [email protected] www.vishay.com 29 550D Vishay Sprague 13. Moisture Resistance: 15. Thermal Shock And Immersion Cycling: 13.1 Capacitors shall be subjected to temperature cycling at 90% to 98% relative humidity, in a test chamber constructed of non-reactive materials (non-resiniferous and containing no formaldehyde or phenol). Steam or distilled, demineralized or deionized water having a pH value between 6.0 and 7.2 at + 23°C shall be used to obtain the required humidity. No rust, corrosive contaminants or dripping condensate shall be imposed on test specimens. 15.1 Capacitors shall be conditioned prior to temperature cycling for 15 minutes at + 25°C, at less than 50% relative humidity and a barometric pressure at 28 to 31 inches. 15.2 Capacitors shall be subjected to thermal shock in a cycle of exposure to ambient air at - 65°C (+ 0°C, - 5°C) for 30 minutes, then, + 25°C (+ 10°C, - 5°C) for 5 minutes, then + 125°C (+ 3°C, - 0°C) for 30 minutes, then + 25°C (+ 10°C, - 5°C) for 5 minutes, for 5 cycles. 15.3 Between 4 and 24 hours after temperature cycling, capacitors shall be subjected to immersion in a bath of fresh tap water with the non-corrosive dye Rhodamine B added, at + 65°C (+ 5°C, - 0°C) for 15 minutes, then, within 3 seconds, immersed in a saturated solution of sodium chloride and water with Rhodamine B added, at a temperature of + 25°C (+ 10°C, - 5°C) for 15 minutes, for 2 cycles. 13.1.1 Capacitors shall be mounted by their normal mounting means in a normal mounting position and placed in a test chamber so that uniform and thorough exposure is obtained. 13.1.2 No conditioning or initial measurements will be performed prior to temperature cycling. Polarization and load voltages are not applicable. 13.1.3 Capacitors shall be subjected to temperature cycling from + 25°C to + 65°C to + 25°C (+ 10°C, -2°C) over a period of 8 hours, at 90% to 98% relative humidity, for 20 cycles. 15.3.1 Capacitors shall be thoroughly rinsed and wiped or air-blasted dry immediately upon removal from immersion cycling. 15.4 Capacitors shall show no evidence of harmful or extensive corrosion, obliteration of marking or other visable damage. 15.5 Following the thermal shock immersion cycling test, capacitors shall meet the original requirements for leakage current and dissipation factor; capacitance change shall not exceed ± 5% of the original measured value. 15.6 Capacitors shall be opened and examined. There shall be no evidence of dye penatration. 16. Reduced Pressure Test: 16.1 Capacitors shall be stabilized at a reduced pressure of 0.315” [8.0] of mercury, equivalent to an altitude of 100,000 feet [30,480 meters], for a period of 5 minutes. After completion of temperature cycling, capacitors shall be removed from the test chamber and stabilized at room temperature for 2 to 6 hours. 16.2 Rated DC voltage shall be applied for 1 minute. 16.3 Capacitors shall not flash over nor shall end seals be damaged. 13.3 Capacitors shall show no evidence of harmful or extensive corrosion, obliteration or marking or other visible damage. 16.4 Following the reduced pressure test, the capacitance, equivalent series resistance and leakage current shall meet the original requirements. 13.4 Following the moisture resistance test, capacitors shall meet the original limits for capacitance, dissipation factor and leakage current. 17. Lead Pull Test: Leads shall withstand a tensile stress of 3 pounds (1.4 kilograms) applied in any direction for 30 seconds. 14. Insulating Sleeves: 17. 14.1 Capacitors with insulating sleeves shall withstand a 2000 volt DC potential applied for 1 minute between the case and a metal ‘V’ block in intimate contact with the insulating sleeve. Marking: Capacitors shall be marked with Sprague® or (2); the type number 550D; rated capacitance and tolerance, rated DC working voltage and the standard EIA date code. 18.1 14.2 Capacitors with insulating sleeves shall have the insulation resistance measured between the case and a metal ‘V’ block in intimate contact with the insulating sleeve. The insulation resistance shall be at least 1000 megohms. Capacitors shall be marked on one end with a plus sign (+) to identify the positive terminal. 18.2 Sprague® reserves the right to furnish capacitors of higher working voltages than those ordered, where the physical size of the higher voltage units is identical to that of the units ordered. 13.1.4 Temperature cycling shall be stopped after an even number of cycles 5 times during the first 18 cycles, and the capacitor shall be alloweed to stabilize at high humidity for 1 to 4 hours. 13.1.5 After stabilization, capacitors shall be removed from the humidity chamber and shall be conditioned for 3 hours at - 10°C ± 2°C. 13.1.6 After cold conditioning, capacitors shall be subjected to vibration cycling consisting of a simple harmonic vibration having an amplitude of 0.03” [0.76] and a maximum total excursion of 0.06” [1.52] varied uniformly from 10Hz to 55Hz to 10Hz over a period of 1 minute, for 15 cycles. 13.1.7 Capacitors shall then be returned to temperature/ humidity cycling. 13.2 www.vishay.com 30 For technical questions, contact [email protected] Document Number: 40017 Revision 11-Nov-04 550D Vishay Sprague GUIDE TO APPLICATION 1. A-C Ripple Current: The maximum allowable ripple current shall be determined from the formula: Irms = P 3. Reverse Voltage: These capacitors are capable of withstanding peak voltages in the reverse direction equal to 15% of the DC rating at + 25°C, 10% of the DC rating at + 55°C; 5% of the DC rating at +85°C. 4. Temperature Derating: If these capacitors are to be operated at temperatures above + 25°C, the permissible rms ripple current or voltage shall be calculated using the derating factors as shown: P RESR = Power Dissipation in Watts @ + 25°C as given in the table in Paragraph Number 5 (Power Dissipation). RESR = The capacitor Equivalent Series Resistance at the specified frequency. 2. A-C Ripple Voltage: The maximum allowable ripple voltage shall be determined by the formula: Vrms = Z P RESR Temperature Derating Factor + 25°C 1.0 + 55°C 0.8 + 85°C 0.6 + 125°C 0.4 or, from the formula: Vrms = Irms x Z where P = Power Dissipation in Watts @ + 25°C as given in the table in Paragraph Number 5 (Power Dissipation). RESR = The capacitor Equivalent Series Resistance at the specified frequency. Z = The capacitor impedance at the specified frequency. 2.1 The sum of the peak AC voltage plus the DC voltage shall not exceed the DC voltage rating of the capacitor. 5. Power Dissipation: The figures shown relate to an approximate + 20°C rise in case temperature measured in free air. Power dissipation will be affected by the heat sinking capability of the mounting surface. Non-sinusoidal ripple current may produce heating effects which differ from those shown. It is important that the equivalent Irms value be established when calculating permissable operating levels. Case Code 2.2 The sum of the negative peak AC voltage plus the applied DC voltage shall not allow a voltage reversal exceeding 15% of the DC working voltage at + 25°C. Document Number: 40017 Revision 11-Nov-04 Maximum Permissible Power Dissipation @ + 25°C (Watts) in free air R 0.185 S 0.225 For technical questions, contact [email protected] www.vishay.com 31