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138D Wet Tantalum Capacitors Sintered Anode TANTALEX(R) Capacitors Hermetically-Sealed with True Glass-to-Tantalum Seal
FEATURES
Improved reliability through the use of a glass-to-tantalum true hermetic anode seal is the prime feature of the Type 138D sintered anode TANTALEX(R) capacitor. This construction offers outstanding resistance to thermal shock. Model 138D is the commercial equivalents of Tansitor Styles WT, UWT, Mallory-NACC Styles TLX, TXX and Military Styles CL66, CL67, CLR65, and CLR69, designed to meet the performance requirements of Military Specification MIL-PRF39006/09/21. Capacitors in accordance with military specifications should be ordered by their military part numbers. Following the life test: 1. DCL shall not exceed 125% of the original requirement. 2. The ESR shall not exceed 200% of the initial requirement. 3. Change in capacitance value shall not exceed the percentages below. a) 6WVDC Units: + 10% to - 25% of initial measurement. b) 8WVDC and 10WVDC Units: + 10% to - 20% of initial measurement. c) 15WVDC Units: + 10% to - 15% of initial measurement. d) 20WVDC and above: 10% of initial measurement.
Vishay
PERFORMANCE CHARACTERISTICS
Operating Temperature: - 55C to + 85C and with voltage derating to two-thirds the + 85C rating at + 125C. Use of Type 138D capacitors for high temperature applications is recommended. Capacitance Tolerance: At 120Hz, + 25C. 20% standard. 10%, 5% available as special. DC Leakage Current (DCL Max.): At + 25C, + 85C and + 125C: Leakage current shall not exceed the values listed in the Standard Ratings Tables. Life Test: Capacitors are capable of withstanding a 2000 hour life test at a temperature of + 85C or + 125C at the applicable rated DC working voltage.
ORDERING INFORMATION
138D MODEL 306 CAPACITANCE This is expressed in picofarads. The first two digits are the significant figures. The third is the number of zeros to follow. X0 CAPACITANCE TOLERANCE X0 = 20% X9 = 10% X5 = 5% Special Order. 006 DC VOLTAGE RATING AT + 85C C CASE CODE 2 STYLE NUMBER 0 = No outer tube. 2 = Outer plastic-film insulation.
This is expressed in volts. See Ratings and Case To complete the three-digit block, zeros precede the Codes Table. voltage rating. A decimal point is indicated by an "R" (6R3 = 6.3 volts).
Packaging: The use of formed plastic trays for packaging these axial lead components is standard. Tape and reel is not recommended due to the unit weight.
DIMENSIONS in inches [millimeters]
L 0.250 [6.35] Max. D
0.0253 0.002 [0.64 0.05] Dia. (No. 22 AWG) Tinned Solderable Leads
Weld Tantalum
CASE CODE C F T K
BARE TUBE D 0.188 0.016 [4.78 0.41] 0.281 0.016 [7.14 0.41] 0.375 0.016 [9.53 0.41] 0.375 0.016 [9.53 0.41] L 0.453 + 0.031 - 0.016 [11.51 + 0.79 - 0.41] 0.641 + 0.031 - 0.016 [16.28 + 0.79 - 0.41] 0.766 + 0.031 - 0.016 [19.46 + 0.79 - 0.41] 1.062 + 0.031 - 0.023 [26.97 + 0.79 - 0.58]
WITH OUTER PLASTIC - FILM INSULATION D (Max.) L (Max.) 0.219 [5.56] 0.312 [7.92] 0.406 [10.31] 0.406 [10.31] 0.608 [15.45] 0.796 [20.22] 0.921 [23.40] 1.127 [30.91]
LEAD LENGTH 1.500 0.250 [38.10 6.35] 2.250 0.250 [57.15 6.35] 2.250 0.250 [57.15 6.35] 2.250 0.250 [57.15 6.35]
Max. WEIGHT (Ounces/Grams) 0.07 [2.0] 0.18 [5.1] 0.36 [10.2] 0.49 [13.9] www.vishay.com 55
Document Number: 40025 Revision 15-Oct-03
For technical questions, contact wettants@vishay.com
138D
Vishay
Wet Tantalum Capacitors Sintered Anode TANTALEX(R) Capacitors Hermetically-Sealed with True Glass-to-Tantalum Seal
STANDARD RATINGS
Max. ESR at + 25C (Ohms) Max. IMP. at - 55C (Ohms) Max. DCL (A) at + 25C + 85C + 125C Max. CAPACITANCE CHANGE (%) at - 55C + 85C + 125C
CAPACITANCE (F)
CASE CODE
PART NUMBER*
6WVDC at + 85C . . . 4WVDC at + 125C 30 68 140 270 330 560 1200 C C F F T T K 138D306X0006C2 138D686X0006C2 138D147X0006F2 138D277X0006F2 138D337X0006T2 138D567X0006T2 138D128X0006K2 4 4 2 4 2 3 1.6 100 60 40 25 20 25 20 1 1 1 1 2 2 3 2 2 3 6.5 7.9 13 14 - 40 - 40 - 40 - 44 - 44 - 64 - 80 + 10.5 + 14 + 14 + 17.5 + 14 + 17.5 + 25 + 12 + 16 + 16 + 20 + 16 + 20 + 25
8WVDC at + 85C . . . 5WVDC at + 125C 25 56 220 430 850 C C F T K 138D256X0008C2 138D566X0008C2 138D227X0008F2 138D437X0008T2 138D857X0008K2 4 4 4 3 1 100 59 30 25 22 1 1 1 2 4 2 2 7 14 16 - 40 - 40 - 44 - 64 - 80 + 10.5 + 14 + 17.5 + 17.5 + 25 + 12 + 16 + 20 + 20 + 25
10WVDC at + 85C . . . 7WVDC at + 125C 20 47 100 180 250 390 750 C C F F T T K 138D206X0010C2 138D476X0010C2 138D107X0010F2 138D187X0010F2 138D257X0010T2 138D397X0010T2 138D757X0010K2 4 5 2 4 2 3 1 175 100 60 40 30 25 23 1 1 1 1 2 2 4 2 2 4 7 10 16 16 - 32 - 36 - 36 - 36 - 40 - 64 - 80 + 10.5 + 14 + 14 + 14 + 14 + 17.5 + 25 + 12 + 16 + 16 + 16 + 16 + 20 + 25
15WVDC at + 85C . . . 10WVDC at + 125C 15 33 70 120 170 270 540 C C F F T T K 138D156X0015C2 138D336X0015C2 138D706X0015F2 138D127X0015F2 138D177X0015T2 138D277X0015T2 138D547X0015K2 5 5 4 4 2 3 1.0 155 90 75 50 35 30 23 1 1 1 1 2 2 6 2 2 4 7 10 16 24 - 24 - 28 - 28 - 28 - 32 - 56 - 80 + 10.5 + 14 + 14 + 17.5 + 14 + 17.5 + 25 + 12 + 16 + 16 + 20 + 16 + 20 + 25
20WVDC at + 85C . . . 13WVDC at + 125C 27 220 C T 138D276X0020C2 138D227X0020T2 5 4 100 30 1 2 2 16 - 20 - 48 + 11 + 13 + 14 + 15
25WVDC at + 85C . . . 15WVDC at + 125C 10 22 50 100 180 350 C C F F T K 138D106X0025C2 138D226X0025C2 138D506X0025F2 138D107X0025F2 138D187X0025T2 138D357X0025K2 138D805X0030C2 138D156X0030C2 138D406X0030F2 138D107X0030T2 138D157X0030T2 138D307X0030K2 6 5 4 4 4 1.3 220 140 70 50 32 24 275 175 65 40 35 25 1 1 1 1 2 7 1 1 1 2 2 8 2 2 5 10 18 28 - 16 - 20 - 28 - 28 - 48 - 70 +8 + 10.5 + 13 + 13 + 13 + 25 +9 + 12 + 15 + 15 + 15 + 25
30WVDC at + 85C . . . 20WVDC at + 125C 8.0 15 40 100 150 300 www.vishay.com 56 C C F T T K 7.5 8 4 6 2.5 1.6 2 2 5 12 16 32 - 16 - 20 - 24 - 28 - 48 - 60 +8 + 10.5 + 10.5 + 10.5 + 13 + 25 + 12 + 12 + 12 + 12 + 15 + 25
For technical questions, contact wettants@vishay.com
Document Number: 40025 Revision 15-Oct-03
138D
Wet Tantalum Capacitors Sintered Anode TANTALEX(R) Capacitors Hermetically-Sealed with True Glass-to-Tantalum Seal
STANDARD RATINGS
Max. DCL (A) at CAPACITANCE (F) CASE CODE PART NUMBER* Max. ESR at + 25C (Ohms) Max. IMP. at - 55C (Ohms) + 25C + 85C + 125C Max. CAPACITANCE CHANGE (%) at - 55C + 85C + 125C
Vishay
35WVDC at + 85C . . . 22WVDC at + 125C 68 120 270 F T K 138D686X0035F2 138D127X0035T2 138D277X0035K2 6 4 2.2 60 38 23 1 2 8 8 16 32 - 24 - 30 - 45 + 12 + 13 + 20 + 15 + 15 + 25
50WVDC at + 85C . . . 30WVDC at + 125C 5.0 10 25 47 60 82 160 C C F F T T K 138D505X0050C2 138D106X0050C2 138D256X0050F2 138D476X0050F2 138D606X0050T2 138D826X0050T2 138D167X0050K2 9 8 6 6 3 4 2.2 400 250 95 70 45 45 27 1 1 1 1 2 2 8 2 2 5 9 12 16 32 - 16 - 24 - 20 - 28 - 16 - 32 - 50 +5 +8 + 10.5 + 10.5 + 10.5 + 13 + 25 +6 +9 + 12 + 15 + 12 + 15 + 25
60WVDC at + 85C . . . 40WVDC at + 125C 4.0 8.2 20 39 50 68 140 C C F F T T K 138D405X0060C2 138D825X0060C2 138D206X0060F2 138D396X0060F2 138D506X0060T2 138D686X0060T2 138D147X0060K2 10 8 5 7 4 6 2.4 550 275 105 90 50 50 28 1 1 1 1 2 2 8 2 2 5 9 12 16 32 - 16 - 24 - 16 - 28 - 16 - 32 - 40 +5 +8 + 10.5 + 10.5 + 10.5 + 10.5 + 20 +6 +9 + 12 + 12 + 12 + 12 + 20
75WVDC at + 85C . . . 50WVDC at + 125C 3.5 6.8 15 33 40 56 110 C C F F T T K 138D355X0075C2 138D685X0075C2 138D156X0075F2 138D336X0075F2 138D406X0075T2 138D566X0075T2 138D117X0075K2 10 8 6.5 7 5 6 3.1 650 300 150 90 60 60 29 1 1 1.0 1.0 2.0 2.0 9 2 2 5 10 12 17 36 - 16 - 20 - 16 - 24 - 16 - 28 - 35 +5 +8 +8 + 10.5 + 10.5 + 10.5 + 20 +6 +9 +9 + 15 + 12 + 15 + 20
100WVDC at + 85C . . . 65WVDC at + 125C 2.5 4.7 11 22 30 43 86 C C F F T T K 138D255X0100C2 138D475X0100C2 138D116X0100F2 138D226X0100F2 138D306X0100T2 138D436X0100T2 138D866X0100K2 26.5 10 6 7 4 6 3.1 950 500 200 100 80 70 30 1.0 1.0 1.0 1.0 2.0 2.0 9 2 2 4 9 12 17 36 - 16 - 16 - 16 - 16 - 16 - 20 - 25 +7 +7 +7 +7 +7 +7 + 15 +8 +8 +8 +8 +8 +8 + 15
125WVDC at + 85C . . . 85WVDC at + 125C 1.7 3.6 9.0 14 18 25 56 C C F F T T K 138D175X0125C2 138D365X0125C2 138D905X0125F2 138D146X0125F2 138D186X0125T2 138D256X0125T2 138D566X0125K2 54.6 15 15 12 11 10 4.1 1250 600 240 167 129 93 32 1.0 1.0 1.0 1.0 2.0 2.0 10 2 2 5 7 9 13 40 - 16 - 16 - 16 - 16 - 16 - 16 - 25 +7 +7 +7 +7 +7 +7 + 15 +8 +8 +8 +8 +8 +8 + 15
*Part Numbers listed are for units with outer plastic-film insulation and a capacitance tolerance of 20%. For bare case units, substitute "0" for "2" at the end of the Part Number. For capacitors with 10% tolerance, change the digit following the letter "X" to "9".
Document Number: 40025 Revision 15-Oct-03
For technical questions, contact wettants@vishay.com
www.vishay.com 57
138D
Vishay
Wet Tantalum Capacitors Sintered Anode TANTALEX(R) Capacitors Hermetically-Sealed with True Glass-to-Tantalum Seal
EXTENDED RATINGS
Max. ESR at + 25C (Ohms) Max. IMP. at - 55C (Ohms) Max. DCL (A) at + 25C + 85C + 125C Max. CAPACITANCE CHANGE (%) at - 55C + 85C + 125C
CAPACITANCE (F)
CASE CODE
PART NUMBER*
6WVDC at + 85C . . . 4WVDC at + 125C 560 820 1500 2200 F F T K 138D567X0006F2 138D827X0006F2 138D158X0006T2 138D228X0006K2 2.5 2.5 1.5 1 20 18 18 13 3 3 5 6 14 14 20 24 - 80 - 88 - 90 - 90 + 16 + 16 + 20 + 25 + 20 + 20 + 25 + 30
8WVDC at + 85C . . . 5WVDC at + 125C 180 470 680 1800 C F F K 138D187X0008C2 138D477X0008F2 138D687X0008F2 138D188X0008K2 3 2.5 2.5 1 45 25 22 14 2 3 3 7 9 14 14 25 - 60 - 75 - 83 - 90 + 13 + 16 + 16 + 20 + 16 + 20 + 20 + 30
10WVDC at + 85C . . . 7WVDC at + 125C 100 150 390 560 1200 1500 C C F F T K 138D107X0010C2 138D157X0010C2 138D397X0010F2 138D567X0010F2 138D128X0010T2 138D158X0010K2 3.0 3 2.5 2.5 1.5 1 60 54 30 27 18 15 2 2 3 3 5 7 9 9 16 16 20 25 - 50 - 55 - 70 - 77 - 88 - 88 + 13 + 13 + 16 + 16 + 20 + 25 + 16 + 16 + 20 + 20 + 25 + 30
15WVDC at + 85C . . . 10WVDC at + 125C 68 100 270 390 540 820 1000 C C F F T T K 138D686X0015C2 138D107X0015C2 138D277X0015F2 138D397X0015F2 138D547X0015T2 138D827X0015T2 138D108X0015K2 4 4 2.5 2.5 1.8 1.8 1.2 80 72 35 31 25 22 17 2 2 3 3 6 6 8 9 9 16 16 24 24 32 - 40 - 44 - 60 - 16 - 70 - 77 - 77 + 13 + 13 + 16 + 16 + 20 + 20 + 25 + 16 + 16 + 20 + 20 + 25 + 25 + 30
20WVDC at + 85C . . . 13WVDC at + 125C 56 82 220 330 C C F F 138D566X0020C2 138D826X0020C2 138D227X0020F2 138D337X0020F2 4.3 4.3 2.7 2.7 90 81 35 31 2 2 3 3 9 9 16 16 - 38 - 43 - 60 - 66 + 13 + 13 + 16 + 16 + 16 + 16 + 20 + 20
25 WVDC at + 85C . . . 15 WVDC at + 125C 47 68 180 270 350 C C F F T 138D476X0025C2 138D686X0025C2 138D187X0025F2 138D277X0025F2 138D357X0025T2 4.3 4.3 2.7 2.7 1.8 100 90 37 33 27 2 2 3 3 7 9 9 16 16 28 - 35 - 40 - 55 - 62 - 60 + 12 + 12 + 13 + 13 + 20 + 15 + 15 + 16 + 16 + 25
30WVDC at + 85C . . . 20WVDC at + 125C 39 56 150 220 330 470 560 C C F F T T K 138D396X0030C2 138D566X0030C2 138D157X0030F2 138D227X0030F2 138D337X0030T2 138D477X0030T2 138D567X0030K2 5.2 5.2 2.5 2.5 1.8 1.8 1.3 110 100 40 36 28 25 20 2 2 3 3 8 8 9 9 9 16 16 32 32 36 - 32 - 38 - 50 - 60 - 50 - 65 - 65 + 12 + 12 + 13 + 13 + 20 + 20 + 25 + 15 + 15 + 16 + 16 + 25 + 25 + 30
* Part Numbers listed are for units with outer plastic-film insulation and a capacitance tolerance of 20%. For bare case units, substitute "0" for "2" at the end of the Part Number. For capacitors with 10% tolerance, change the digit following the letter "X" to "9".
www.vishay.com 58
For technical questions, contact wettants@vishay.com
Document Number: 40025 Revision 15-Oct-03
138D
Wet Tantalum Capacitors Sintered Anode TANTALEX(R) Capacitors Hermetically-Sealed with True Glass-to-Tantalum Seal
EXTENDED RATINGS
Max. DCL (A) at CAPACITANCE (F) CASE CODE PART NUMBER* Max. ESR at + 25C (Ohms) Max. IMP. at - 55C (Ohms) + 25C + 85C + 125C Max. CAPACITANCE CHANGE (%) at - 55C + 85C + 125C
Vishay
35WVDC at + 85C . . . 22WVDC at + 125C 33 47 120 220 390 470 C C F T T K 138D336X0035C2 138D476X0035C2 138D127X0035F2 138D227X0035T2 138D397X0035T2 138D477X0035K2 5.2 5.2 2.5 1.8 1.8 1.3 130 115 45 30 27 21 2 2 3 8 8 9 9 9 16 32 32 36 - 30 - 35 - 45 - 45 - 58 - 58 + 10 + 10 + 13 + 20 + 20 + 25 + 12 + 12 + 16 + 25 + 25 + 30
50WVDC at + 85C . . . 30WVDC at + 125C 22 33 82 120 160 270 330 C C F F T T K 138D226X0050C2 138D336X0050C2 138D826X0050F2 138D127X0050F2 138D167X0050T2 138D277X0050T2 138D337X0050K2 5 5 2.5 2.5 1.8 1.8 1.5 150 135 55 49 32 29 22 2 2 4 4 6 8 9 9 9 24 24 32 32 36 - 24 - 29 - 35 - 42 - 35 - 46 - 46 + 10 + 10 + 10 + 12 + 20 + 20 + 25 + 12 + 12 + 15 + 15 + 25 + 25 + 30
60WVDC at + 85C . . . 40WVDC at + 125C 18 27 68 100 140 220 270 C C F F T T K 138D186X0060C2 138D276X0060C2 138D686X0060F2 138D107X0060F2 138D147X0060T2 138D227X0060T2 138D277X0060K2 5 5 3 2.5 2 1.8 1.5 160 144 60 54 32 29 23 3 3 4 4 8 8 9 12 12 20 20 32 32 36 - 20 - 24 - 30 - 36 - 30 - 40 - 45 + 10 + 10 + 12 + 12 + 16 + 16 + 20 + 12 + 12 + 15 + 15 + 20 + 20 + 25
75WVDC at + 85C . . . 50WVDC at + 125C 15 22 56 82 110 180 220 C C F F T T K 138D156X0075C2 138D226X0075C2 138D566X0075F2 138D826X0075F2 138D117X0075T2 138D187X0075T2 138D227X0075K2 5 5 3 2.5 2 1.8 2.2 175 157 70 63 33 30 24 3 3 4 4 9 9 10 12 12 24 24 36 36 40 - 16 - 19 - 25 - 30 - 25 - 35 - 40 + 10 + 10 + 12 + 12 + 16 + 16 + 20 + 12 + 12 + 15 + 15 + 20 + 20 + 25
100WVDC at + 85C . . . 65WVDC at + 125C 8.2 10 33 39 68 120 C C F F T K 138D825X0100C2 138D106X0100C2 138D336X0100F2 138D396X0100F2 138D686X0100T2 138D127X0100K2 6 6 3.5 3.5 2.2 2.8 250 200 85 80 40 30 3 3 5 5 10 12 12 12 24 24 40 48 - 12 - 17 - 18 - 20 - 30 - 35 + 10 + 10 + 12 + 12 + 14 + 15 + 12 + 12 + 15 + 15 + 16 + 17
125WVDC at + 85C . . . 85WVDC at + 125C 6.8 27 39 47 82 C F T T K 138D685X0125C2 138D276X0125F2 138D396X0125T2 138D476X0125T2 138D826X0125K2 11.7 3.5 2.2 2.2 2.8 300 90 60 50 32 3 5 10 10 12 12 24 40 40 48 - 14 - 18 - 16 - 26 - 30 + 10 + 12 + 14 + 14 + 15 + 12 + 15 + 16 + 16 + 17
*Part Numbers listed are for units with outer plastic-film insulation and a capacitance tolerance of 20%. For bare case units, substitute "0" for "2" at the end of the Part Number. For capacitors with 10% tolerance, change the digit following the letter "X" to "9".
Document Number: 40025 Revision 15-Oct-03
For technical questions, contact wettants@vishay.com
www.vishay.com 59
138D
Vishay
Wet Tantalum Capacitors Sintered Anode TANTALEX(R) Capacitors Hermetically-Sealed with True Glass-to-Tantalum Seal
TYPICAL CURVES OF IMPEDANCE AS A FUNCTION OF FREQUENCY AT VARIOUS TEMPERATURES
"K" Case 120F, 25V Capacitors
200 100 200 100
"C" Case 10F. 100V Capacitors
IMPEDANCE IN OHMS
IMPEDANCE IN OHMS
10
10
- 55C - 40C
1.0
- 55C - 40C - 20C +125C
0.2 100 1K 10K 100K 1M 10M
1.0
- 20C + 25C + 85C +125C
+ 25C + 85C
0.2 100 1K 10K 100K
1M
10M
FREQUENCY IN HERTZ
FREQUENCY IN HERTZ
PERFORMANCE CHARACTERISTICS
1. Operating Temperature: Capacitors are designed to operate over the temperature range of - 55C to +125C.
AT + 125C WORKING VOLTAGE (V) 4 5 7 10 13 15 20 UP TO + 85C WORKING VOLTAGE (V) 35 50 60 75 100 125 150 AT + 125C WORKING VOLTAGE (V) 22 30 40 50 70 85 100
4.1
UP TO + 85C WORKING VOLTAGE (V) 6 8 10 15 20 25 30
Capacitance measurements shall be made by the bridge method at or referred to, a frequency of 120Hz at a temperature of + 25C. A polarizing voltage shall be used of such magnitude that there shall be no reversal of polarity due to the AC component. The maximum AC voltage will be 1 volt rms applied during measurement. Capacitance Change With Temperature: The capacitance change with temperature shall not exceed the limits given in the Standard and Extended Ratings Table for each capacitor. Equivalent Series Resistance: Measurements shall be made by the bridge method at or referred to, a frequency of 120Hz at a temperature of + 25C. A polarizing voltage shall be used of such magnitude that there shall be no reversal of polarity due to the AC component. The maximum AC voltage will be 1 volt rms applied during measurement.
5.
6.
2.
DC Working Voltage: The DC working voltage is the maximum operating voltage for continuous duty at the rated temperature. Surge Voltage: The surge DC rating is the maximum voltage to which the capacitors should be subjected under any conditions. This includes transients and peak ripple at the highest line voltage. The surge voltage of capacitors rated below 150 volts is 115% of the rated DC working voltage. The surge voltage of capacitors rated at 150 volts DC is 165 volts. Surge Voltage Test: Capacitors shall withstand the surge voltage test applied through a 1000 ohm 10% resistor in series with the capacitor and voltage source at the rate of one-half minute on, four and one-half minutes off, for 1000 successive test cycles at + 85C or + 125C. Capacitance Tolerance: The capacitance of all capacitors shall be within the specified tolerance limits of the nominal rating.
3.
6.1. The equivalent series resistance shall not exceed the maximum value in ohms listed in the Standard and Extended Ratings Table for each capacitor. 6.2. The dissipation factor may be calculated from the equivalent series resistance and capacitance values as shown: DF = where: DF = Dissipation Factor in % R = ESR in ohms C = Capacitance in F f = frequency in Hz 2fRC 104
3.1
4.
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Document Number: 40025 Revision 15-Oct-03
138D
Wet Tantalum Capacitors Sintered Anode TANTALEX(R) Capacitors Hermetically-Sealed with True Glass-to-Tantalum Seal
PERFORMANCE CHARACTERISTICS (Cont'd)
At 120Hz, the above equation becomes: DF = RxC 13.26 For example, percent dissipation factor of a 30F, 6 volt capacitor, which has a maximum ESR of 3.4 ohms at + 25C and 120Hz, would be calculated as shown: DF = 2 x 120 x 3.4 x 30 = 3.4 x 30 = 7.7% 13.26 104 7. Leakage Current: Measurements shall be made at the applicable rated working voltage at + 25C 5C through application of a steady source of power, such as a regulated power supply. The total resistance in series with each capacitor shall be between 1000 ohms and 10,000 ohms. The voltage shall be applied to the capacitor for 5 minutes before making the leakage current measurement. 7.1. The maximum leakage current for any capacitor shall not exceed the value in microamperes listed in the Standard and Extended Ratings Table for each capacitor.
Note: leakage current varies with applied voltage. See graph below for the appropriate adjustment factor.
Vishay
9.
Life Test: Capacitors are capable of withstanding a 2000 hour life test at a temperature of + 85C or + 125C at the applicable rated DC working voltage. High Frequency Vibration: Capacitors shall with stand vibration from 10Hz to 2000Hz at 20g when tested. Lead Pull Test: Capacitors shall withstand a lead tensile stress of 3 pounds (13.2N) for 30 seconds, applied axially. Marking: Capacitors shall be marked with Sprague(R) and/or the Sprague(R) trademark 2, the Sprague(R) type (138D); rated capacitance and tolerance (the tolerance shall be coded, using the list shown in How to Order); rated DC working voltage at + 85C; the standard EIA date code of manufacture.
10.
11.
12.
GUIDE TO APPLICATION
1. Ripple Current: All capacitors will withstand rms ripple currents as listed for each capacitor. 1.1. The rms ripple current rating is independent of temperature or frequency within the following limitations: 1.1.1. At frequencies of less than 120Hz, the rated rms ripple current must be multiplied by the factors shown:
FREQUENCY IN HERTZ 25 0.36 50 0.59 60 0.65 100 0.88
LEAKAGE AS A FUNCTION OF VOLTAGE & TEMPERATURE
Percent of Rated Voltage
8.
Low Temperature Impedance: The impedance of any capacitor at - 55C at 120Hz, shall not exceed the values given in the Standard and Extended Ratings Tables.
1.1.2 The sum of the peak AC voltage plus the DC voltage shall not exceed the DC working voltage of the capacitor. 1.1.3 The sum of the negative peak AC voltage, plus the applied DC voltage shall not allow a voltage reversal. 2. Cleaning wiring boards with Type 138D capacitors: Customary cleaning solvents used in the electronics industry at present will not affect Type 138D capacitors. However, the use of ultrasonic cleaning techniques is not recommended under any circumstances. 3. Apparent Capacitance: Note that in timing circuit applications, the circuit designer must take into account two important variables which affect any electrolytic capacitor. These are the internal leakage resistance of the capacitor and its dielectric absorption, which will depend on the elapsed time since the capacitor was last energized. In applications where electrolytic capacitors are subjected to DC energy, or in effect, extremely low frequencies, the value of the apparent capacitance will be somewhat higher than that which is measured at 120HZ. 4. No Reverse Voltage: The application of reverse voltage to these capacitors will cause internal damage. The resulting damage will lead to immediate or delayed failure of the unit. This will take the form of a catastrophic short circuit with possible expulsion of the electrolyte.
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Leakage Current Factor
Document Number: 40025 Revision 15-Oct-03
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