MS14048A
TABLE I. Electrical characteristics (initial).
Dash number 1/ |
Type designation 2/ |
Superseded MS PIN |
Inductance (µH) ±10% |
Q (min) |
Test frequency (MHz) |
SRF min (MHz) |
DC resistance (ohms) |
Rated dc current (mA) |
-1 -2 -3 -4 -5 |
LT10K143 LT10K144 LT10K145 LT10K146 LT10K147 |
MS75053-1 MS75053-2 MS75053-3 MS75053-4 MS75053-5 |
180 220 270 330 390 |
80 80 80 75 75 |
.79 .79 .79 .79 .79 |
6.0 5.5 5.1 4.2 3.9 |
5.5 5.9 6.6 7.8 8.7 |
148 145 138 122 118 |
1/ The dash number added to MS military standard number constitutes the MS PIN; for example MS14048-1.
2/ The decrease in maximum operating temperature from 125°C to 105°C does not downgrade these coils but assures satisfactory operation at 105°C for a minimum of 2,000 hours of life rather than a shorter period of operation at 125°C.
TABLE II. Electrical characteristics (final). 1/
Inspection group |
Allowable variation from Initial measurement |
Allowable percent from specified minimum value in electrical characteristics (initial) table |
||
Inductance (percent) |
DC resistance |
Self-resonant frequency |
Q |
|
Qualification inspection Group II Group III Group IV 2/ |
±2 ±5 ±5 |
--- ±(3% +.001 ohm) ±(2% +.001 ohm) |
--- -8 -10 |
-10 -10 -15 |
Conformance inspection group C Subgroup I Subgroup II 2/ Subgroup III |
±2 ±5 ±5 |
--- ±(2% +.001 ohm) ±(3% +.001 ohm) |
--- -10 -8 |
-10 -15 -10 |
1/ Test fixture allowance of +.01 µH shall be added to all change in inductance limits ±( _ percent +.01 µH).
2/ The polarizing voltage during the moisture resistance tests Is applied with the positive lead connected to the coil terminals tied together, and the negative lead connected to the metal strap.
3
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