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Old 11-16-2008, 08:38 PM
fabby fabby is offline
Officially Welcomed to the 'Fest
Location: richmond, va
Join Date: Feb 2006
Posts: 147
Mein Auto: 740iL
Great News...

Anyway, if anyone wants to know, I received the Smart MOSFETs chips and installed them and they so far work perfectly. These are replacements (i.e. alternate manufacturer) for the Infineon (Siemens) BTS425L1 Mosfets which drive the high beam headlights in the E38 Light/Lamp Control Module or "LCM".

These chips can be purchased from Mouser Electronics online at by ordering part numer VN750-E. You do not want any other configuration/part number. This has the same pins and heat sink as the OEM part. These chips can be ordered in any quantity so noone needs to stockpile them for others on the group.

Mouser also shows this chip as a replacement for the BTS426L1; however, I only installed it as a replacement in my E38 for the '425L1 chips so I can't testify that it works. Although, I do not see why it wouldn't work.

Good luck.
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