MIL-PRF-19500/578M
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order
(see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel
need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are
maintained by the Inventory Control Point's packaging activities within the Military Service or Defense Agency, or
within the Military Service’s system commands. 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
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.
The notes specified in MIL-PRF-19500 are applicable to this specification.)
6.1 Intended use. Semiconductors conforming to this specification are intended for original equipment design
applications and logistic support of existing equipment.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a. Title, number, and date of this specification.
b. Packaging requirements (see 5.1).
c. Lead finish (see 3.4.1).
d. Product assurance level and type designator.
6.3 Qualification. With respect to products requiring qualification, awards will be made only for products which are,
at the time of award of contract, qualified for inclusion in Qualified Manufacturers List (QML 19500) whether or not
such products have actually been so listed by that date. The attention of the contractors is called to these
requirements, and manufacturers are urged to arrange to have the products that they propose to offer to the Federal
Government tested for qualification in order that they may be eligible to be awarded contracts or orders for the
products covered by this specification. Information pertaining to qualification of products may be obtained from DLA
Land and Maritime, ATTN: VQE, P.O. Box 3990, Columbus, OH 43218-3990 or e-mail vqe.chief@dla.mil. An online
listing of products qualified to this specification may be found in the Qualified Products Database (QPD) at
https://assist.dla.mil .
6.4 Cross reference substitution list. JANS1N4148-1 design is unsuitable for space flight applications and is
therefore prohibited and will no longer be built nor qualified. Devices in stock are acceptable provided the date code
does not exceed 9208. A PIN for PIN replacement table follows, and these devices are directly interchangeable. The
JANS1N6642 will be used in place of the JANS1N4148-1. The 1N6638US, 1N6642US, and 1N6643US are
structurally identical, are the preferred part numbers, and are directly substitutable for the 1N6638U, 1N6642U, and
1N6643U. The 1N6638U, 1N6642U, and 1N6643U shall not be used for new design.
Non-preferred PIN
Preferred PIN
JANS1N4148-1
JANS1N4148UR-1
JANS1N6638U
JANS1N6642U
JANS1N6643U
JANS1N6642
JANS1N6642US
JANS1N6638US
JANS1N6642US
JANS1N6643US
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