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MIL-PRF-55514H_SUP_1-003.pdf
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AMSC N/A FSC 5910
DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.
INCH-POUND
MIL-PRF-55514H
13 January 2023
SUPERSEDING
MIL-PRF-55514G
w/AMENDMENT 1
6 September 2017
PERFORMANCE SPECIFICATION
CAPACITOR, FIXED, PLASTIC (OR METALLIZED PLASTIC)
DIELECTRIC, DC OR DC-AC, IN NONMETAL CASES,
NON-ESTABLISHED AND ESTABLISHED RELIABILITY
GENERAL SPECIFICATION FOR
This specification is approved for use by all Departments
and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers the general requirements for established reliability (ER) and non-established
reliability (non-ER), (product level C), plastic (or metallized plastic) dielectric, fixed capacitors, enclosed in nonmetal
cases intended primarily, in view of the limited long term moisture resistant characteristics, for use in potted or
encapsulated systems, in blocking, filter, and by-pass applications (see 6.4). ER capacitors covered by this
specification have failure rate levels (M, P, R, and S) ranging from 1.0 percent to 0.001 percent per 1,000 hours.
These failure rates (FR) are established at a 90-percent confidence level and maintained at a 10-percent producer’s
risk and based on life tests performed at +85°C or +105°C, whichever is applicable. An acceleration factor of 5:1 has
been used to relate life test data obtained at 125 percent, or 140 percent of rated voltage at +85°C or +105°C,
whichever is applicable, to rated voltage at +85°C or +105°C, whichever is applicable. The product levels are based
on catastrophic failures and failures occurring outside the degradation limits.
1.2 Classification. Capacitors covered by this specification are classified by style (see 1.2.1.1 and 3.1).
1.2.1 Part or Identifying Number (PIN). The term Part or Identifying Number (PIN) is equivalent to the term (part
number, identification number, and type designator) that was previously used in this specification. The PIN is in the
following form and as specified (see 3.1).
CFR02
A
M
C
682
J
M
Style
(see 1.2.1.1)
Terminal
symbol
(see 1.2.1.2)
Characteristic
(see 1.2.1.3))
Rated
voltage
(see 1.2.1.4)
Capacitance
(see 1.2.1.5)
Capacitance
tolerance
(see 1.2.1.6)
Product level
designatior
(see 1.2.1.7)
1.2.1.1 Style. The style is identified by the three-letter symbol "CFR" followed by a two-digit number; the letters
identify ER and non-ER, plastic dielectric fixed capacitors in nonmetal cases.
Comments, suggestions, or questions on this document should be addressed to: DLA Land and Maritime, ATTN:
VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to capacitorfilter@dla.mil. Since contact
information can change, you may want to verify the currency of this address information using the ASSIST Online
database at https://assist.dla.mil.
Source: https://assist.dla.mil -- Downloaded: 2023-03-06T13:27Z
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MIL-PRF-55514H
2
1.2.1.2 Terminal symbol. The terminal is identified by a single letter as shown in table I.
TABLE I. Terminal symbol.
Symbol Terminal
A
Axial wire-lead
R
Radial wire-lead
L
Lugs
1.2.1.3 Characteristic. The characteristic is identified by a single letter as shown in table II.
TABLE II. Characteristic.
Dielectric material
Electrode
range
K
Polypropylene
Foil
-55°C to +105°C
L
Polypropylene
Metallized polypropylene
-55°C to +105°C
M
Polyethylene terephthalate
Foil
-55°C to + 85°C
N
Polyethylene terephthalate
Metallized polyethylene terephthalate
-55°C to + 85°C
Q
Polycarbonate
Foil
-55°C to +125°C 1/
R
Polycarbonate
Metallized polycarbonate
-55°C to +125°C 1/
U
Polyphenylene sulfide
Metallized polyphenylene sulfide
-55°C to +125°C 1/
V
Polyphenylene sulfide
Foil
-55°C to +125°C 1/
1/ For operation at +125°C, characteristics Q, R, U and V capacitors are voltage derated (see table III).
1.2.1.4 Rated voltage. The rated voltage is identified by a single symbol as shown in table III.
TABLE III. Voltage rating.
Symbol
DC voltage rating
at +85°C 1/
Characteristics
Q and V
DC voltage rating
at +125°C
Characteristics
R and U
DC voltage rating
at +125°C
A
50
33.3
25
B
100
66.7
50
C
200
133.3
100
D
300
200.0
150
E
400
266.7
200
F
600
400.0
300
G
75
50.0
37.5
H
150
100.0
75
J
25
16.7
12.5
K
250
166.7
125
L
800
533.3
400
1/ DC voltage rating for characteristics K and L at +105°C are the same as
those at +85°C.
1.2.1.5 Capacitance. The nominal capacitance value, expressed in picofarads (pF), is identified by a three-digit
number; the first two digits represent significant figures and the last digit specifies the number of zeros to follow.
NOTE: Tabulated capacitance values expressed in microfarads (µF) are given for information only (see 3.1).
Characteristic
Construction
Operating temperature
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MIL-PRF-55514H
3
1.2.1.6 Capacitance tolerance. The capacitance tolerance is identified by a single letter as shown in table IV.
TABLE IV. Capacitance tolerance.
Symbol
Capacitance tolerance
percent (±)
F
1
G
2
J
5
K
10
M
20
1.2.1.7 Product level designator. The product level designator is identified by a single letter as shown in table V.
TABLE V. Failure rate level (FRL) (established at a 90-percent confidence level).
Symbol FRL
C
non-ER
M
1.0 1/
P
0.1 1/
R
0.01 1/
S
0.001 1/
1/ FRL (percent per 1,000 hours).
2. APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This
section does not include documents cited in other sections of this specification or recommended for additional
information or as examples. While every effort has been made to ensure the completeness of this list, document
users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this
specification, whether or not they are listed.
2.2 Government documents.
2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a
part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are
those cited in the solicitation or contract.
DEPARTMENT OF DEFENSE SPECIFICATIONS
(See supplement 1 for list of associated specification sheets.)
DEPARTMENT OF DEFENSE STANDARDS
MIL-STD-202 - Test Methods Standard Electronic and Electrical Component Parts
MIL-STD-202-104 - Method 104, Immersion
MIL-STD-202-105 - Method 105, Barometric Pressure (Reduced)
MIL-STD-202-106 - Method 106, Moisture Resistance
MIL-STD-202-107 - Method 107, Thermal Shock
MIL-STD-202-108 - Method 108, Life (at Elevated Ambient Temperature)
MIL-STD-202-204 - Method 204, Vibration, High Frequency
MIL-STD-202-208 - Method 208, Solderability
MIL-STD-202-210 - Method 210, Resistance to Soldering Heat
MIL-STD-202-211 - Method 211, Terminal Strength
Source: https://assist.dla.mil -- Downloaded: 2023-03-06T13:27Z
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MIL-PRF-55514H
4
MIL-STD-202-213 - Method 213, Shock (Specified Pulse)
MIL-STD-202-215 - Method 215, Resistance to Solvents
MIL-STD-202-301 - Method 301, Dielectric Withstanding Voltage
MIL-STD-202-302 - Method 302, Insulation Resistance
MIL-STD-202-305 - Method 305, Capacitance
MIL-STD-690 - Failure Rate Sampling Plans and Procedures
MIL-STD-790 - Standard Practice for Established Reliability and High Reliability Qualified
Products List (QPL) Systems for Electrical, Electronic, and Fiber Optic Parts
Specifications
MIL-STD-810 - Environmental Engineering Considerations and Laboratory Tests
MIL-STD-1276 - Leads for Electronic Component Parts
MIL-STD-1285 - Marking of Electrical and Electronic Parts
(Copies of these documents are available online at https://quicksearch.dla.mil/.)
2.3 Non-Government publications. The following documents form a part of this document to the extent specified
herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.
SAE INTERNATIONAL (SAE)
SAE EIA-554-1 - Assessment of Average Outgoing Quality Levels in Parts Per Million (PPM)
(Copies of this document are available online at https://www.sae.org/.)
SOLID STATE TECHNOLOGY ASSOCIATION (JEDEC)
JEDEC JESD557 - Statistical Process Control Systems
(Copies of this document are available online at https://www.jedec.org/.)
2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the
text of this document and the references cited herein (except for related specification sheets), the text of this
document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless
a specific exemption has been obtained.
3. REQUIREMENTS
3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the
applicable specification sheet. In the event of any conflict between the requirements of this specification and the
specification sheet, the latter shall govern.
3.2 Qualification. Capacitors furnished under this specification shall be products which are authorized by the
qualifying activity for listing on the applicable qualified products list (QPL) before contract award (see 4.4 and 6.3). In
addition, the manufacturer shall obtain certification from the qualifying activity that the reliability assurance
requirements of 4.1 have been met and are being maintained.
Source: https://assist.dla.mil -- Downloaded: 2023-03-06T13:27Z
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MIL-PRF-55514H
5
3.3 QPL system. The manufacturer shall establish and maintain a QPL system for parts covered by this
specification. Requirements for this system are specified in MIL-STD-790 and MIL-STD-690 (ER only). In addition
the manufacturer shall also establish a SPC and PPM system that meets the requirements as detailed in 3.3.1 and
3.3.2 respectively. The following MIL-STD-790 exceptions are allowed:
a. Under "Description of production processes and controls", the procedure for identification of each production
lot shall include only "the manufacturer shall as a minimum be able to identify the time period during which
the final production operation was performed on each item of product prior to final test. The date or lot code
marked on each part shall be identified to a production lot."
b. "Traceability" of materials shall not apply.
3.3.1 SPC system. As part of the overall MIL-STD-790 QPL system, the manufacturer shall establish an SPC
system that meets the requirements of JEDEC JESD557.
3.3.2 PPM system. As part of the overall MIL-STD-790 QPL system, the manufacturer shall establish a ppm
system of assessing the average outgoing quality of lots in accordance with SAE EIA-554-1. Data exclusion, in
accordance with SAE EIA-554-1 may be used with approval of the qualifying activity. The ppm system shall identify
the ppm rate at the end of each month and shall be based on a 6-month moving average. Style reporting may
include both ER and non-ER style combinations.
3.4 Materials. Materials shall be as specified herein. However, when a definite material is not specified, a material
shall be used which will enable the capacitors to meet the performance requirements of this specification.
Acceptance or approval of any constituent material shall not be construed as a guaranty of the acceptance of the
finished product.
3.4.1 Insulating and sealing materials. Compounds and films used in the insulating and sealing of capacitors shall
be chemically inactive with respect to the capacitor element. The material, either in state of original application or as
a result of having aged, shall have no adverse effect on the performance of the capacitors.
3.4.2 Pure tin. The use of pure tin, as an underplate or final finish, is prohibited both internally and externally. Tin
content of capacitor components and solder shall not exceed 97 percent. Tin shall be alloyed with a minimum of 3
percent lead (see 6.8). Lead-free, tin alloy high temperature solders may be used where high temperature solder is
necessary with the approval of the qualifying activity. The tin content of lead-free high temperature solders shall not
exceed 97 percent, by mass.
3.5 Interface and physical dimensions requirements. Capacitors shall meet the interface requirements and
physical dimensions specified (see 3.1).
3.5.1 Case. Each capacitor shall be enclosed in a nonmetal case which will protect the capacitor element from
moisture, impregnant leakage, and mechanical damage under the test conditions specified herein. Cardboard shall
not be used for insulating purposes.
3.5.2 Terminals. Terminals shall be of a solid conductor, of the length and diameter specified (see 3.1), and shall
be suitably treated to facilitate soldering. When a coating containing tin is used, the tin content shall range between
40 percent and 70 percent.
3.5.2.1 Solder dip (retinning) leads. Only the manufacturer may solder dip/retin the leads of product supplied to
this specification provided the solder dip process has been approved by the qualifying activity.
3.5.2.2 Qualifying activity approval. Approval of the solder dip process shall be based on one of the following
options:
a. When the original lead finish qualified was hot solder dip lead finish 52 of MIL-STD-1276 (NOTE: The 200
microinch maximum thickness is not applicable.), the manufacturer shall use the same solder dip process for
retinning as is used in the original manufacture of the product.
Source: https://assist.dla.mil -- Downloaded: 2023-03-06T13:27Z
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