MIL-R-93 Resistors, Fixed, Wire-Wound, Accurate, General Specification ForThis specification covers the general requirements for accurate, wire-wound, fixed resistors having a maximum resistance tolerance of 1 percent, with the winding protected against high humidity. The resistors are rated for continuous full load operation at any ambient temperature up to 125 Degrees C, and derated up to 145 Degrees C. They are not capable for application where alternating current ac characteristics are of critical importance. Performance characteristics are in accordance with table I.

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MIL-R-93F

APPENDIX A

PROCEDURE FOR QUALIFICATION INSPECTION

A.1.  SCOPE

A.1.1  Scope.  This appendix details the procedure for submission of sample, with test results, for qualification inspection of resistors covered by this specification.  The procedure for extending qualification required sample to other resistors covered by this specification is also outlined herein.  This appendix is a mandatory part of the specification.  The information contained herein is intended for compliance.

A.2.  APPLICABLE DOCUMENTS   (This section is not applicable to this appendix.) A.3.  SUBMISSION

A.3.1  Sample.

A.3.1.1  Single type submission.  When qualification is sought for a single resistance value, a sample consisting of 40 coated or enclosed sample units and 2 uncoated or unenclosed sample units in the same resistor style, and lead type, shall be submitted.

A.3.1.2  Multiple type submission.  When qualification is sought for a resistance range, a sample consisting of 34 coated or enclosed sample units and 2 uncoated or unenclosed sample units in the same resistor style, terminal type, and tightest tolerance for which qualification is sought, shall be submitted together with a statement indicating the lowest resistance value manufactured.  The number of sample units in group II to group VI, inclusive, of table VII and the applicable resistance value shall be as

specified in table A-I.  When axial terminal type "C" is submitted (as 34 samples above):  Qualification for type "W" in the same style may be granted when an additional 6 samples of type "W" are subjected to

group I and group II of table VII.  In a similar manner, type "C" may be qualified where "W" is submitted

(as 34 sample above), with the submission of 16 additional samples of type "C" resistors to group I, group

IA, and Group II of table VII.

A.4.  EXTENT OF QUALIFICATION

A.4.1  Single type submission.  Qualification shall be restricted to the resistance value in the style and resistance tolerance submitted.

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