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11 December, 2001
Dear Customer:
Aeroflex UTMC Microelectronic Systems Inc. (UTMC) appreciates your interest and use
of our products, specifically the UT1553B Remote Terminal Multi-Protocol (RTMP). The
purpose of this letter is to inform you that UTMC intends to migrate the RTMP (Standard
Military Drawing (SMD) #5962-88645) to a new wafer fabrication facility. The supply of
current wafer material will soon be at a level that necessitates this migration.
The new version of the RTMP remote terminal interface is designed to be a direct
package replacement for the existing RTMP. This new version will also be a fit-formÂfunction replacement and demonstrate the same electrical characteristics as the current
version.
Aeroflex UTMC has sufficient die inventory to yield approximately 2,200 finished good
units (die code UN05). The inventory of the existing RTMP is being offered to customers
until the replacement product is fully qualified. Aeroflex UTMC plans to cease shipping
product built from the old mask set, once qualification of the migrated version is
complete. We expect to use the same SMD number (5962-88645) for the new material.
An updated version of the RTMP Data Sheet will be made available on the UTMC
website (www.utmc.com) by the end of the second quarter 2002. For reference,
attached is a current listing of RTMP part types and SMD numbers. If you have any
questions please contact me at (719) 594-8252.
Regards,
Anthony F. Jordan
Director of Standard Product Line
Business Development and Engineering
Attachment
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Current UT1553 RTMP Part numbers and Standard Military Drawing (SMD) numbers.
Part/SMD Number Pins Pkg Flow Lead Finish
UT1553/RTMP-ACA 84 LCC Mil-Temp Solder
UT1553/RTMP-GCC 84 PGA Mil-Temp Gold
UT1553/RTMP-GCA 84 PGA Mil-Temp Solder
UT1553/RTMP-WCC 84 FlatPack Mil-Temp Gold
UT1553/RTMP-WCA 84 FlatPack Mil-Temp Solder
UT1553/RTMP-APA 84 LCC Prototype Solder
UT1553/RTMP-GPC 84 PGA Prototype Gold
UT1553/RTMP-WPC 84 FlatPack Prototype Gold
5962-8864501ZA 84 LCC QML Q Solder
5962-8864501XC 84 PGA QML Q Gold
5962-8864501XA 84 PGA QML Q Solder
5962-8864501YC 84 FlatPack QML Q Gold
5962-8864501YA 84 FlatPack QML Q Solder
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