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|  MIL-R-27208/4J
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. The intended use specified in MIL-PRF-27208 is applicable to this specification.
6.2 Acquisition requirements. Acquisition documents must specify the following:
a.
Title, number, and date of this specification, and the complete PIN (see 1.2).
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b.
If not otherwise specified (see 2.1), the versions of the individual documents referenced will be those in
effect on the date of release of the solicitation.
c.
Packaging requirements (see 5.1).
6.3 Weight. The maximum weight is 2.4 grams.
6.4 Substitution data. The resistors specified herein are not for use for new design after 5 October 1973. They
are authorized for use in design contracts effective prior to or on 5 October 1973, and to support existing military
equipment. Resistors specified in MIL-PRF-39015/2 are preferred for design regardless of the failure rate
designation can be used as substitutes for the inactivated resistors of the same resistance value, tolerance and
characteristic performance of this specification.
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6.5 Tin whisker growth. The use of alloys with tin content greater than 97 percent, by mass, may exhibit tin
whisker growth problems after manufacture. Tin whiskers may occur anytime from a day to years after manufacture
and can develop under typical operating conditions, on products that use such materials. Conformal coatings applied
over top of a whisker-prone surface will not prevent the formation of tin whiskers. Alloys of 3 percent lead, by mass,
have shown to inhibit the growth of tin whiskers. For additional information on this matter, refer to ASTM-B545
(Standard Specification for Electrodeposited Coatings of Tin).
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6.6 Termination "L". The QPL manufacturer of the "L" termination of this slash sheet has always used 100 percent
tin plating on their internal tabs. Designers are caution on using the "L" termination for replacement purposes (see
6.5).
*
6.7 Changes from previous issue. The margins of this specification are marked with asterisks 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 notations. 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.
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