MIL-STD-202H.pdf - 第255页
MI L - S TD - 202 - 30 5 6. NOTES (This secti on contain s i n f or m at i on o f a g ener al or ex pl anat or y nat ur e t ha t m ay be he l pf ul , b u t is not man datory.) 6.1 Supers ession data . T he m ai n b ody a…
MIL-STD-202-305
METHOD 305
CAPACITANCE
1. SCOPE
1.1 Purpose. The purpose of this test is to measure the capacitance of component parts. Preferred test
frequencies for this measurement are 60 Hz, 100 Hz, 120 Hz, 1 kHz, 100 kHz, and 1 MHz.
2. APPLICABLE DOCUMENTS
This section not applicable to this standard.
3. DEFINTIONS
This section not applicable to this standard.
4. GENERAL REQUIREMENTS
4.1. Procedure. The capacitance of the specimen shall be measured with a capacitance bridge or other suitable
method at the frequency specified. Unless otherwise specified, the measurement shall be made at a temperature of
25°C ± 5°C. In the case of measurement dispute, capacitance measurements shall be made at or corrected to 25°C.
The inherent accuracy of the measurement shall be ±(0.5 percent +0.2 picofarad) unless otherwise specified.
Suitable measurement technique shall be used to minimize errors due to the connections between the measuring
apparatus and the specimen. The alternating-current (ac) voltage actually impressed across the specimen shall be
as low as practicable. When a direct-current (dc) polarizing voltage is required, it shall be as specified and shall
exceed the peak ac voltage impressed across the specimen; however, the sum of the peak ac and the dc voltages
shall not exceed the voltage rating of the specimen.
5. DETAILED REQUIREMENTS
5.1. Summary. The following details are to be specified in the individual specification:
a. Test frequency (see 4.1).
b. Test temperature, if other than that specified (see 4.1).
c. Limit of accuracy, if other than that specified (see 4.1).
d. Magnitude of polarizing voltage, if applicable (see 4.1)
e. Magnitude of AC rms test signal, if applicable (see 4.1).
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MIL-STD-202-305
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Supersession data. The main body and 38 parts of this revision of MIL-STD-202 replace superseded MIL-STD-
202.
Custodians: Preparing activity:
Army - CR DLA – CC
Navy - EC
Air Force - 85 (Project 59GP-2015-035)
DLA - CC
Review activities:
Army - AR, AT, AV, CR4, MI, SM, TE
Navy - AS, OS, SH
Air Force - 19, 99
NSA - NS
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 https://assist.dla.mil/
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北测（上海）电子科技有限公司
联系方式：xuyj@beice-sh.com 13917165676
INCH-POUND
MIL-STD-202-306
18 April 2015
SUPERSEDING
MIL-STD-202G
w/CHANGE 2 (IN PART)
28 June 2013
(see 6.1)
DEPARTMENT OF DEFENSE
TEST METHOD STANDARD
METHOD 306, QUALITY FACTOR (Q)
AMSC N/A FSC 59GP
北测（上海）电子科技有限公司
联系方式：xuyj@beice-sh.com 13917165676