JAN, JANTX, JANTXV, and JANS Parts

Have you ever found it challenging to grasp the various tiers of Military Diodes and Transistors?

Have you encountered challenges deciphering the various levels of Military Diodes and Transistors? Perhaps you've attempted to procure a JAN level Diode or Transistor only to discover that the specific one you require is either unavailable or has a lengthy lead time. Hopefully, after reading this, you'll gain a clearer understanding of what these different levels entail and may even find an acceptable alternative or upgrade to meet your production deadline.        

Prefixes such as JAN hold significant meaning when attached to a Transistor or Diode. JAN stands for Joint Army Navy, indicating that the item is manufactured to a Military level, specifically MIL-S-19500. Therefore, if you add JAN to the 2N2222, you're purchasing a Military-grade item. However, there's more depth to this classification.

What if you require a JANTX, JANTXV, or a JANS? Adding extensions beyond JAN upgrades the part. Adding "TX" signifies that the part not only adheres to MIL-S-19500 but has also been tested to that Mil spec. Incorporating "V" to "TX" indicates that the part underwent verification during testing before packaging. Lastly, appending "S" to JAN denotes that the part is space qualified or tested to Lot Tolerance Percent Defective (LTPD per MIL-STD-105).

Here's a breakdown:

• 2N2222 Commercial Part
• JAN2N2222 Military Part made to MIL-S-19500
• JANTX2N2222 Military Part made to MIL-S-19500 and tested to the spec after production
• JANTXV2N2222 Military Part made to MIL-S-19500 with the die visually checked during production and tested to the spec after production
• JANS2N2222 Military Part made to MIL-S-19500 with the die visually checked during production and tested to the spec after production. Then tested to LTPD following all other steps.

So, if you're seeking a JAN-level part and can only find a JANTXV item, although you might pay a bit more, you're indeed acquiring a superior part.

What if you encounter parts marked only as JX or JTX? Common abbreviations and alternate ways manufacturers mark their parts, mostly if the part number is too lengthy, include:

• JAN – J
• JANTX – JX, or JTX
• JANTXV – JXV, JXTV, or JV
• JANS – JS

What about parts marked MX? In some instances, manufacturers who once held a QPL to produce JAN parts found it financially impractical to maintain the QPL for that item. Consequently, they continue to manufacture and test the part to MIL-S-19500 standards but mark it as MX since they lack the license to label them as JANTX.

Can you utilize parts marked MX? Roughly 50% of customers can utilize MX items, particularly those involved in Navy builds. The Navy permits suppliers to provide them with equivalent parts as long as testing conforms to MIL-S-19500 standards, backed by documentation.

In summary, this provides a brief overview of the different levels for ordering JAN Diodes and Transistors.

Cheers and Good Luck!! :)

#JAN #JANTX #JANTXV #JANS #ComponentEngineering #obsolescenceManagement