MIL-PRF-19500 Semiconductor Devices, General Specification ForThis specification establishes the general performance requirements for semiconductor devices. Product assurance is provided by effective screening, conformance inspection, and process controls to mitigate risk. Mission assurance and standardization of parts are the highest priorities. This specification establishes a heritage program of semiconductor devices the military and space community can rely on to be dependable and available. Detail requirements and characteristics are specified in the specification sheets. Revisions to this specification and specification sheets are structured to assure the interchangeability of devices of the same part type regardless of manufacturing date code or conformance inspection \(CI\) completion date. Four quality levels for encapsulated devices are provided for in this specification, differentiated by the prefixes JAN, JANTX, JANTXV, and JANS. Eight radiation hardness assurance \(RHA\) levels are provided for the JANTXV and JANS quality levels. These are designated by the letters M, D, P, L, R, F, G, and H following the quality level portion of the prefix. Two quality levels for unencapsulated devices are provided for in this specification, differentiated by the prefixes JANHC and JANKC.

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MIL-PRF-19500P

3.10.6.1 JAN and J marking. The United States Government has adopted and is exercising legitimate control over

the certification marks "JAN" and "J", respectively, to indicate that items so marked or identified are manufactured to,

and meet all the requirements of the specification. Accordingly, items acquired to, and meeting all of the criteria

specified herein and in applicable specifications shall bear the certification mark "JAN" except that items too small to

bear the certification mark "JAN" shall bear the letter "J". The "JAN" or "J" shall be placed immediately before the

part number except that if such location would place a hardship on the manufacturer in connection with such marking,

the "JAN" or "J" may be located on the first line above or below the part number. Items furnished under contracts or

orders which either permit or require deviation from the conditions or requirements specified herein or in applicable

specifications shall not bear "JAN" or "J". In the event an item fails to meet the requirements of this specification and

the applicable specification sheets, the manufacturer shall remove completely the military part number and the "JAN"

or the "J" from the sample tested and also from all items represented by the sample. The "JAN" or "J" certification

mark shall not be used on products acquired to contractor drawings or specifications. The United States Government

has obtained Certificate of Registration Number 504,860 for the certification mark "JAN" and Registration Number

1,586,261 for the certification mark "J".

3.10.6.1.1 JAN branded prefix. The type number of all semiconductor devices acquired to and meeting the

requirements of this specification, and the applicable specification sheet, shall bear the applicable prefix. In the case

of small size semiconductor devices, the abbreviated prefix J (for JAN), JX (for JANTX), JV (for JANTXV), or JS (for

JANS) may be used. Failed devices or lots shall have the JAN brand obliterated or removed within 30 days of failure.

3.10.7 Manufacturer's designating symbol. The manufacturer's designating symbol shall be as listed in the QML

and assigned by the qualifying activity. The symbol shall be used only by the manufacturer to whom it has been

assigned and only on those devices manufactured at that manufacturer's plant. The manufacturer's designating

symbol may be abbreviated by omitting the first "C" in the series of letters (see 3.10.12).

3.10.8 Lot identification code. Semiconductor devices shall be marked by a code indicating the last week of

sealing for the inspection lot accumulation period. The first two numbers in the code shall be the last two digits of the

number of the year. The third and fourth numbers shall be two digits indicating the calendar week of the year. When

the number of the week is a single digit, it shall be preceded by a zero. Reading from left to right or top to bottom, the

code number shall designate the year and week. For axial diodes, the lot identification code is required for DO-35

package sizes and larger.

3.10.8.1 Lot identification code suffix letter. When more than one inspection lot of a device type sealed within the

same lot accumulation period is submitted for conformance inspection, a lot identification code suffix letter, consisting

of a single capital letter, shall appear on each semiconductor device immediately following the date code. This letter

shall be chosen by the manufacturer so that each inspection lot is uniquely identified by the lot identification code and

by the lot identification suffix letter, if one is required.

3.10.8.2 Code for plants. If the devices are assembled or the wafers are fabricated at a plant other than the basic

plant, the lot identification code shall include a single letter which uniquely identifies the plant. This plant designator

shall appear immediately preceding and adjacent to the date code. The plant designator will be listed with the

addresses in the QML.

3.10.9 Serialization. JANS devices and, when specified, other device levels shall be marked with a unique serial

number assigned consecutively within the inspection lot. JANS devices shall be marked with the serial number in

screening, and inspection lot records shall be maintained to provide traceability from the serial number to the specific

wafer lot from which the devices originated. For small devices with insufficient area for serialization, lead or body

tags may be used. JANS devices are allowed to be shipped without serialization tags as long as it is requested by

the customer in writing. In some cases the lead and body tags are not wanted. In these cases, it is better to have the

manufacturer remove the tags than it is to have the original equipment manufacturer (OEM) remove them and

possibly damage the devices. Once the tags are removed these devices cannot be resold as JANS devices on the

open market to anyone other than the original purchaser who has agreed to the removal of the serialization tags.