NPFC - MIL-HDBK-263
ELECTROSTATIC DISCHARGE CONTROL HANDBOOK FOR PROTECTION OF ELECTRICAL AND ELECTRONIC PARTS, ASSEMBLIES AND EQUIPMENT (EXCLUDING ELECTRICALLY INITIATED EXPLOSIVE DEVICES) (METRIC)
|Publication Date:||31 July 1994|
This handbook provides guidance for developing, implementing and monitoring an ESD control program in accordance with the requirements of MIL-STD-1686. Information is provided in 6.1 that cross references the various revisions of MIL-HDBK-263 to the appropriate revision of MIL-STD-1686. This handbook is not applicable to electrically initiated explosive devices. The specific guidance provided is supplemented by the technical data contained in the appendices. Table I provides a cross-reference listing of MIL-STD-1686 requirements, MIL-HDBK-263 guidance, and MIL-HDBK-263 supplementary technical data.
The application of MIL-STD-1686 requirements will result in continuous ESD controls throughout the life-time of ESD susceptible parts, assemblies, and equipment. For this reason, MIL-STD-1686 requirements will be applied to Government and contractor activities including subcontractors, suppliers, and vendors. The term "contractor" in MIL-STD-1686 will be replaced with "Government activity" as appropriate when the requirements are applied to the Government.
Effective application of MIL-STD-1686 requirements mandates careful consideration of the technical and cost impacts associated with each acquisition type. Proper application of MIL-STD-1686 requirements must address three considerations: tailoring, mission critical or essential equipment, and reacquisition requirements. Each of these considerations is related. Tailoring of MIL-STD-1686 is directly related to the work efforts to be performed. As an example, an acquisition that is initiated for new design hardware items should incorporate all elements required by MIL-STD-1686 (see table I of MIL-STD-1686). In contrast to this, reacquisition of hardware items not previously subject to an ESD control program should delete the MIL-STD-1686 requirement for design protection. Redesign of hardware for reacquisitions is generally not cost effective. This also applies in the case of Government acquisition of non-developmental items (NDI) or commercial off-the-shelf (COTS) electronic equipment. In these cases, redesign of NDI or COTS electronic equipment to conform to MIL-STD-1686 design hardening requirements (if invoked) would negate the cost benefits of NDI/COTS acquisition. Closely related to these topics is the inclusion of class 3 parts, assemblies, and equipment in the ESD control program. This aspect of ESD control is solely at the discretion of the acquiring activity and should be invoked only for equipment designated by the acquiring activity as mission critical or essential.
MIL-STD-1686, as discussed above, is applied to both Government and contractors to ensure ESD controls are continuously provided throughout the life-time of ESD susceptible parts, assemblies, and equipment. When MIL-STD-1686 is contractually invoked the initial step that should be performed by the contractor is a contract review to determine if any part of the acquisition has been designated as mission critical or essential equipment by the acquiring activity. If this has been done, MIL-STD-1686, 18.104.22.168 requires that the ESD control program encompasses not only Class 1 and Class 2 parts, assemblies and equipment but be expanded to also include Class 3 items. This is a first step in the tailoring of MIL-STD-1686.
The second step performed by the contractor in tailoring MIL-STD-1686 should be the completion of a review to determine the exact ESD control program requirements invoked in the contract. MIL-STD-1686, 1.3.1 states "The contractor shall tailor the ESD control program for the acquisition by selecting the applicable functions and elements of Table I." This requirement does not preclude or limit Government tailoring or modification of MIL-STD-1686 for a specific acquisition. Contractor review of the contractual document is critical to determining contractual requirements, compliance with contractual requirements and tailoring of MIL-STD-1686 by the contractor. Tailoring of MIL-STD-1686 must always be accomplished in accordance with the contractual requirements.
The review of the contract or purchase order will also provide a determination of Government Data Requirements (see MIL-STD-1686, 6.2) for the acquisition. When the contract or purchase order requires that an Electrostatic Discharge Control Program Plan be developed and delivered, MIL-STD-1686, 1.3.1 requires that tailoring rationale and data be included in the Plan. Contractor tailoring of MIL-STD-1686 is subject to approval by the acquiring activity and is normally accomplished by formal Government acceptance or rejection of the plan.
To facilitate the understanding of the MIL-STD-1686 tailoring process Figure 1 graphically depicts the process as discussed above and in MIL-STD-1686, 1.3.1. The reference numbers in the Figure 1 flow chart blocks are the MIL-STD-1686 requirements paragraphs and are included for ready reference. Figure 1 cannot, and does not take precedence over contractual, delivery order or MIL-STD-1686 requirements.
This document provides guidance information to assist the user in designing and implementing an ESD control program in accordance with MIL-STD-1686B requirements. The supplementary technical data... View More
This document provides guidance information to assist the user in designing and implementing an ESD control program in accordance with MIL-STD-1686B requirements. The supplementary technical data provided in appendices A through L is provided as information only for reference. Due to the nature of the changes in MIL-STD-1686B this handbook is intended for use only with MIL-STD-1686B. For those contracts incorporating DOD-STD-1686 of 2 May 1980, the companion document is DOD-HDBK-263 of 2 May 1980. For those contracts incorporating MIL-STD-1686A of 8 August 1988, the companion document is MIL-HDBK-263A of 22 February 1991.View Less