INCH-POUND
MIL-R-10509/8E
10 August 2001
SUPERSEDING
MIL-R-10509/8D
19 April 1989
MILITARY SPECIFICATION
RESISTORS, FIXED, FILM (HIGH STABILITY),
STYLE RN50
INACTIVE FOR NEW DESIGN AFTER 22 NOVEMBER 1968.
USE MIL-PRF-55182/7.
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 requirements for style RN50, high stability, film, fixed,
resistors. This style is available in characteristics C, and E.
1.2 Part or Identifying Number (PIN). Resistors covered by this specification is identified by a PIN
which consist of the style of this specification and a coded number. The PIN is in following form:
RN50
Specification
style number
2 APPLICABLE DOCUMENT
2.1 General. The documents listed in this section are specified in sections 3 and 4 of the 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.
D1003F
Coded
number
Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of
use in improving this document should be addressed to: Defense Supply Center, Columbus, ATTN:
DCSS-VAT, Post Office Box 3990, Columbus, Ohio 43216-5000, by using the Standardization
Document Improvement Proposal (DD Form 1426) appearing at the end of the document or by letter.
AMSC N/A
FSC 5905
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
MIL-R-10509/8E
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 listed in the issue of the Department of Defense Index of
Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2).
SPECIFICATIONS
DEPARTMENT OF DEFENSE
MIL-R-10509 - Resistors, Fixed, Film (High Stability), General Specification for.
(Unless otherwise indicated, copies of the above specifications, standards, and handbooks are
available from the Department Automation and Production Service, Building 4D, (DPM-DODSSP), 700
Robbins Avenue, Philadelphia, PA 19111-5094.)
2.3 Order of precedence. In the event of a conflict between the text of this document and the
references cited herein (except for related associated specifications, specification sheets, or MS 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 General. The requirements for acquiring the product described herein shall consist of this
document and MIL-R-10509.
3.2 Interface and physical dimensions. Resistors shall meet the interface and physical dimensions
specified on figure 1.
3.3 Power rating. The power rating shall be 0.05 watt.
3.4 Voltage rating. The maximum continuous working voltage shall not exceed 200 volts.
3.5 Resistance. Minimum and maximum resistance values shall be as follows in table I.
TABLE I. Minimum and maximum resistance.
Minimum resistance
Characteristics
Ohms
C, E
10.0
4. VERIFICATION
4.1 Sampling and inspection. Sampling and inspection shall be in accordance with MIL-R-10509.
4.2 Terminal strength. Direct load shall be applied gradually until the load reaches 2 pounds.
Maximum resistance
Characteristics
Megohms
C, E
0.100
2
MIL-R-10509/8E
D
C
A
B
Dimension
A
B
C
D
Inches
.150
±.020
1.250
±.266
.016
±.002
.065
±.015
mm
3.81
±0.51
31.75
±6.76
0.41
±0.05
1.65
±0.38
NOTE:
1. Dimensions are in inches.
2. Metric equivalents are given for general information only.
3. The end of the body shall be that point at which the body diameter equals the nearest drill size
larger then 250 percent of the normal lead diameter.
4. Maximum length is “clean lead” to “clean lead” (0.244 inch or 6.20 mm).
FIGURE 1. Style RN50.
5. PACKAGING
5.1 Packaging. For acquisition purposes, packaging requirements shall be as specified in the contract
or order (see 6.2). When actual packaging of materiel is to be performed by DoD personnel, these
personnel need to contact the responsible packaging activity to ascertain requisite packaging
requirements. Packaging requirements are maintained by Inventory Control Point’s packaging activity
within the Military Department or Defense Agency, or within the Military department’s System Command.
Packaging data retrieval is available from the managing Military Department’s or Defense Agency’s
automated packaging files, CD-ROM products or by contacting the responsible packaging activity.
6. NOTES
6.1 Intended use. The notes specified in MIL-R-10509 are applicable to this specification.
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MIL-R-10509/8E
6.2 Acquisition requirements. Acquisition documents must specify the following.
a. Title, number, and date of this specification.
b. Issue of DoDISS to be cited in the solicitation, and if required, the specific issue of individual
documents referenced (see 2.2.1).
c. Packaging requirements (see 5.1).
6.3 Substitution data. The resistors specified herein are not for use in design after 22 November 1968.
They are authorized for use in design contracts effective prior to or on 22 November 1968. Existing
equipment shall be supported by substitute resistors in MIL-PRF-55182/7 of the same resistance value,
resistance tolerance, and characteristic performance of this specification regardless of failure rate
designation. Resistors specified in MIL-PRF-55182/7 are preferred for design and regardless of failure
rate designation can be used as substitutes for inactivated resistors of the same resistance value,
tolerance, and characteristic performance of this specification. Characteristic substitution shall be made
as indicated in table II.
TABLE II. Characteristic substitution.
MIL-R-10509
characteristic
C
E
Substitute
MIL-PRF-55182
characteristic
H
J
6.4 Changes from previous issue. Marginal notations are not used in this revision to identify changes
with respect to the previous issue due to the extensiveness of the changes.
Custodians:
Army - CR
Navy - EC
Air Force - 11
Review activities:
Army - AR, AT, AV, CR4, MI
Navy - AS, CG, MC, OS
Air Force - 19
Preparing activity:
DLA - CC
(Project 5905-1627-05)
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