1、 MS21380D 2 July 2007 SUPERSEDING MS21380C(USAF) 14 September 1994 MILITARY SPECIFICATION SHEET COILS, RADIO FREQUENCY, MOLDED, FIXED, SUBMINIATURE, IRON CORE, TYPES LT4K This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The requirements for acqui
2、ring the products described herein shall consist of this specification and MIL-PRF-15305. Dimensions in inches with metric equivalents (mm) in parentheses Ltr Minimum Maximum A B C D .270 (6.86) .880 (22.35) 1.300 (33.02) .0265 (0.671) .310 (7.87) .910 (23.11) - .0305 (0.775) NOTES: 1. Dimensions ar
3、e in inches. 2. Metric equivalents are given for general information only. 3. These coils are intended to be mounted by the bodies. 4. Solderable/weldable lead wire, tinned copper, AWG number 21. FIGURE 1. Dimensions and configuration. AMSC N/A FSC 5950 INCH-POUND Inactive for new design.Provided by
4、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS21380D 2 REQUIREMENTS: Design, construction, and physical dimensions: See figure 1. Style: LT4. Grade: 1. Class: B. Weight: 0.14 ounce, maximum. Operating temperature range: -55C to +125C. Ambient temperature: +
5、 90C maximum. Temperature rise: 35C maximum. Power dissipation: .500 watt maximum. Terminal pull: 5 pounds minimum. Altitude: 60,000 feet. Shock, specified pulse: Method 213 of MIL-STD-202, test condition I, is applicable. Vibration (high frequency): Method 204 of MIL-STD-202, test condition G. Diel
6、ectric withstanding voltage (sea level): Method 301 of MIL-STD-202, test voltage 700 V rms minimum. Barometric pressure (reduced): Method 105 of MIL-STD-202, test condition C, test voltage 100 V rms minimum. Electrical characteristics: See table I and table II. Inductance: See table I. Q values: See
7、 table I. Self-resonant frequency (SRF): See table I. DC resistance (DCR): See table I. Part or Identifying Number (PIN): MS21380 - (dash number from table I). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS21380D 3 TABLE I. Electrical characteris
8、tics (initial). Test frequency (MHz) Dash number Type designation Inductance (H) Q L Q (min) 1/ SRF min (MHz) Maximum DCR (ohms) Rated dc current (mA) -01 LT4K352 1.0 10% 15 25 130 170 .03 4000 -02 LT4K353 1.2 10% 15 7.9 130 155 .03 4000 -03 LT4K354 1.5 10% 10 7.9 130 140 .03 4000 -04 LT4K355 1.8 10
9、% 10 7.9 130 125 .03 4000 -05 LT4K356 2.2 10% 10 7.9 130 115 .04 3500 -06 LT4K357 2.7 10% 10 7.9 100 102 .04 3500 -07 LT4K358 3.3 10% 7.9 7.9 100 90 .04 3500 -08 LT4K359 3.9 10% 7.9 7.9 80 85 .05 3100 -09 LT4K360 4.7 10% 7.9 7.9 75 80 .05 3100 -10 LT4K361 5.6 10% 7.9 7.9 65 72 .06 3000 -11 LT4K362 6
10、.8 10% 7.9 7.9 65 65 .06 3000 -12 LT4K363 8.2 10% 7.9 7.9 65 57 .11 2400 -13 LT4K364 10 10% 5.0 7.9 75 50 .15 1800 -14 LT4K365 12 10% 5.0 2.5 75 45 .23 1600 -15 LT4K366 15 5% 5.0 2.5 75 40 .30 1300 -16 LT4K367 18 5% 5.0 2.5 75 36 .40 1150 -17 LT4K368 22 5% 2.5 2.5 75 32 .50 1000 -18 LT4K369 27 5% 2.
11、5 2.5 70 30 .60 900 -19 LT4K370 33 5% 2.5 2.5 70 28 .70 850 -20 LT4K371 39 5% 2.5 2.5 70 26 1.1 720 -21 LT4K372 47 5% 2.5 2.5 75 25 1.3 620 -22 LT4K373 56 5% 2.5 2.5 80 22 1.8 540 -23 LT4K374 68 5% 2.5 2.5 100 20 2.4 450 -24 LT4K375 82 5% 2.5 2.5 100 18 2.8 425 -25 LT4K376 100 5% 1.5 2.5 100 17 3.2
12、400 -26 LT4K377 120 5% 1.5 .79 100 15 4.8 360 -27 LT4K378 150 5% 1.0 .79 100 14 6.4 280 -28 LT4K379 180 5% 1.0 .79 95 12 9.5 240 -29 LT4K380 220 5% 1.0 .79 95 11 12 200 -30 LT4K381 270 5% 1.0 .79 70 9 13 195 -31 LT4K382 330 5% .79 .79 65 7.5 14 190 -32 LT4K383 390 5% .79 .79 65 6.5 15.5 180 -33 LT4K
13、384 470 5% .79 .79 60 5.5 17 170 -34 LT4K385 560 5% .50 .79 75 4.0 18.5 165 -35 LT4K386 680 5% .50 .79 75 3.2 20 155 -36 LT4K387 820 5% .50 .79 75 2.8 22 150 -37 LT4K388 1,000 5% .50 .79 75 2.4 24 145 -38 LT4K389 1,200 5% .50 .79 75 2.1 27 137 -39 LT4K390 1,500 5% .40 .79 75 1.9 29 130 -40 LT4K391 1
14、,800 5% .40 .79 65 1.7 32 125 -41 LT4K392 2,200 5% .25 .25 65 1.5 35 120 -42 LT4K393 2,700 5% .25 .25 65 1.3 40 112 -43 LT4K394 3,300 5% .25 .25 65 1.2 45 105 -44 LT4K395 3,900 5% .25 .25 65 1 49 100 -45 LT4K396 4,700 5% .25 .25 65 0.95 53 95 -46 LT4K397 5,600 5% .25 .25 65 0.85 60 90 -47 LT4K398 6,
15、800 5% .25 .25 65 0.75 67 85 -48 LT4K399 8,200 5% .25 .25 65 0.65 75 82 -49 LT4K400 10,000 5% .15 .25 65 0.58 80 80 1/ Minimum self resonant frequency to be no less than 80 percent of the specified value. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
16、-,-MS21380D 4 TABLE II. Electrical characteristics (final). 1/ Allowable variation from Initial measurement Allowable percent from specified minimum value in electrical characteristics (initial) table Inspection group Inductance (percent) DC resistance Self-resonant frequency Q Qualification inspect
17、ion Group II Group III Group IV 2 5 5 - (3% +.001 ohm) (2% +.001 ohm) - -8 -10 -10 -10 -10 Conformance inspection group C Subgroup I Subgroup II Subgroup III 2 5 5 - (2% +.001 ohm) (3% +.001 ohm) - -10 -8 -10 -10 -10 1/ Test fixture allowance of +.01 H shall be added to all change in inductance limi
18、ts ( _ percent +.01 H). Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these nota
19、tions. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Referenced documents. In addition to MIL-PRF-15305, this document references MIL-STD-202. Custodi
20、ans: Preparing activity: Air Force 11 DLA CC DLA - CC (Project 5950-2007-014) NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can 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-,-,-
