LM2940J-8.0/883 LM2940K-12 LM2940K-5.0/883C LM2940L LM2940L-12 LM2940L-12-AA3-R LM2940L-12-TA3-T-VB LM2940L-12-TQ2-T LM2940L-12V LM2940L-12V TO-263 T/R