1、 MIL-PRF-39018/7C 20 February 2009 SUPERSEDING MIL-PRF-39018/7B 16 May 2007 PERFORMANCE SPECIFICATION SHEET CAPACITORS, FIXED, ELECTROLYTIC (ALUMINUM OXIDE) (POLARIZED), (FOUR-TERMINAL), ESTABLISHED RELIABILITY STYLE CUR19 (INSULATED) This specification is approved for use by all Depart- ments and A
2、gencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-PRF-39018. NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only and are based upon 1.00 = 25.4 mm. 3. Metric
3、 equivalents are in parentheses. 4. These capacitors are not intended to be mounted by their leads. 5. There is an indeterminate resistance between the metal case and the negative terminals. 6. Example of marking and its relative location on the capacitor body FIGURE 1. Style CUR19 capacitors. AMSC
4、N/A FSC 5910 INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-39018/7C 2 Case size INSULATED DIMENSIONS INCHES Typical weight (GRAMS) L Max. Dia Min Max H1 1.625 1.843 .785 20.3 H2 2.125 2.343 .785 26.8 H3 2.625 2.843 .785 33.2 H4 3
5、.125 3.343 .785 39.7 H5 3.625 3.843 .785 45.9 J1 1.625 1.843 .910 26.9 J2 2.125 2.343 .910 36.2 J3 2.625 2.843 .910 45.4 J4 3.125 3.343 .910 55.0 J5 3.625 3.843 .910 64.0 K1 1.625 1.843 1.035 34.3 K2 2.125 2.343 1.035 45.9 K3 2.625 2.843 1.035 57.2 K4 3.125 3.343 1.035 68.5 K5 3.625 3.843 1.035 81.9
6、 FIGURE 1. Styles CUR19 capacitorsInches - Continued. mm .002 .05 .008 .20 .015 .38 .040 1.02 .625 15.88 .785 19.94 .910 23.11 1.035 26.29 1.625 41.28 1.843 46.81 2.125 53.98 2.343 59.51 2.625 66.68 2.843 72.21 3.125 79.38 3.343 84.91 3.625 92.08 3.843 97.61 Provided by IHSNot for ResaleNo reproduct
7、ion or networking permitted without license from IHS-,-,-MIL-PRF-39018/7C 3 TABLE I. Style CUR19 capacitorsDC rated voltage 105C . Capaci- tance DC surge voltage ESR (max) 120Hz, 25C Imped- ance (max) 25C 10 kHz 1MHz DC leakage RMS ripple current 1/ 10C rise 10kHz- 1MHz Case size Dash number 2/ 25C
8、85C duration and direction of motion - In accordance with method 204 of MIL-STD-202. Thermal shock and immersion: Thermal shock: Method 107 of MIL-STD-202, condition A, except in step 3, units shall be tested at applicable high temperature. Immersion: Method 104 of MIL-STD-202, condition B (2 cycles
9、, 30 minutes). DCL - See table I. Cap. - Within 5 percent of initial measured value. ESR - See table I. Case insulation - Shall meet initial requirements. Surge voltage: DCL - See table I. Cap. - Within 6 percent of initial measured value. ESR - See table I. Moisture resistance: Method 106 of MIL-ST
10、D-202. DCL - See table I. Cap. - Within 6 percent of initial measured value. ESR - See table I. Case insulation - Shall meet initial requirements. High temperature exposure (500 hours at 105C). DCL - Not more than 200 percent of initial requirement. Cap. - Within 10 percent of initial measured value
11、. ESR - Not more than 115 percent of initial requirement. Resistance to solvents: In accordance with MIL-PRF-39018. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-39018/7C 9 High temperature verification: In accordance with MIL-PRF-39018 at
12、105C with rated voltage applied. DCL - See table I. Cap. - Within 10 percent of initial measured value. ESR - Not more than 130 percent of initial requirement. Reverse voltage aging: In accordance with MIL-PRF-39018. Marking: In accordance with MIL-PRF-39018. Part or Identifying Number: M39018/07-(d
13、ash number from table I). The complete dash number will include additional letter symbol (s) as shown in table I. OPERATION NOTES: 1. Application. The 4-terminal axial leaded capacitor is designed for high frequency applications where low ESR, inductance and impedance are required. The advantage of
14、4-terminal construction over 2-terminal construction is that the impedance decreases above 10 kHz. 2. 10 kHz - 1 MHz Impedance. Measurements are made using a voltage divider network as shown in figure 2. The impedance value of the capacitor is then calculated from the ratio of the voltages across th
15、e known impedance and the unknown impedance as follows: XRXVVRZ = FIGURE 2. Voltage divider network. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-39018/7C 10 3. DC current. Unlike 2-terminal capacitors, the dc current flows through the cap
16、acitor and contributes to the operating temperature. The temperature rise (TL) due to the dc current may be determined from figure 3. The ability of the external leads to carry the desired current should be taken into consideration. Lead length and heat sink qualities of the printed circuit board an
17、d capacitor will affect the current capability. FIGURE 3. DC current vs. temperature rise. 4. Ripple current. The rms ripple current which will result in a 10C internal temperature rise (TR), over the frequency range of 10 kHz to 1 MHz, is tabulated in table I. For other temperature rises and freque
18、ncies, the 10 kHz - 1 MHz ripple currents may be multiplied by the factors shown in table II. TABLE II. Factors for determining ripple currents at various frequencies. Frequency (Hz) Temperature rise 5C 10C 15C 20C 25C 30C 60 0.35 0.50 0.65 0.75 0.85 1.00 120 0.45 0.65 0.80 0.95 1.10 1.30 400 0.50 0
19、.75 0.95 1.10 1.30 1.50 1K 0.55 0.80 1.00 1.15 1.35 1.60 10K-1M 0.65 1.00 1.25 1.45 1.70 2.00 5. Operating temperature. The operating temperature (TC) is determined by obtaining the sum of the ambient temperature (TA), the temperature rise due to the ripple current (TR) and the temperature rise due
20、to the dc current (TL). TC= TA+ TR+ TL. The sum should not exceed the maximum rated temperature (+105C). NOTES: Reference document. MIL-PRF-39018. MIL-STD-202. Changes from previous issue. The margins of this specification are marked with asterisks to indicate where changes from the previous issue w
21、ere made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relatio
22、nship to the last previous issue. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-39018/7C 11 Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5910-2009-025) DLA - CC Review activities: Navy - AS, MC, OS, S
23、H Air Force - 19 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities change, you should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
