LM2940L-50-AA3-R LM2940L50AA3-R LM2940L-50-TA3 LM2940L-50-TN3-R LM2940L-50-TQ2-R LM2940L-50-TQ3-R LM2940L-6.0V LM2940L-60-AA3-R LM2940L-60-TN3-R LM2940L-8.0