MIL-STD-1276 Leads For Electronic Component PartsThis standard establishes the method of identifying, specifying, and limiting to a minimum the combinations of basic materials, the thickness and composition of the plating used therewith, and the sizes of wire and flat wire ribbon leads on electronic and electrical parts when they are to be soldered or welded during assembly in equipment.

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MIL-STD-1276H

6.  NOTES

(This section contains information of a general or explanatory nature which may be helpful, but is not mandatory.)

6.1  Intended use.  Documents conforming to the requirements of this standard are intended for use of identifying, specifying, and limiting to a minimum the combinations of basic materials, the thickness and composition of the plating used therewith, and the sizes of wire and flat wire (ribbon) leads on electronic and electrical parts when they are to be soldered or welded during assembly in equipment.

6.2  Precaution.  Substitution of any type of lead for the existing leads on electronic component parts should not be made in a parts specification without first determining the effect of this substitution on the performance and solderability characteristics of the component part.

6.3  Removal of gold plating before soldering.  Prior to equipment assembly, gold plated leads will have the gold removed before soldering by single or double dipping into a flowing or nonflowing hot solder of sufficient volume to assure complete gold removal.

6.4  Passive nickel.  If there is a delay after the application of nickel strike, where the nickel surface may have become passive, the nickel will be reactivated followed by gold plating.  Reactivation of the nickel surface should be in accordance with the appropriate section of the latest ASTM standards.  (Reference:  ASTM 8322, "Standard Practice for Cleaning Metals Prior to Electroplating"; and ASTM 8343, "Standard Practice for Preparation of Nickel for Electroplating with Nickel".)

6.5  Cross reference.  A cross reference of discontinued and superseding lead types appears in table IV.  Where

MIL-STD-12768 designations are specified, the cross referenced MIL-STD-1276C designations may be used.

TA8LE IV.  Cross reference of lead types.

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