Table: transistors_db
Columns: prefix_class
type_and_usage
example
equivalent
reference

Question: What is every reference for type and usage of Germanium small-signal RF transistor?
SQL: SELECT "reference" FROM transistors_db WHERE "type_and_usage" = 'Germanium small-signal RF transistor'

Question: What is every equivalent for the example of asy28?
SQL: SELECT "equivalent" FROM transistors_db WHERE "example" = 'ASY28'

Question: What is every reference for the example of AF117?
SQL: SELECT "reference" FROM transistors_db WHERE "example" = 'AF117'

Question: What is every prefix class for the equivalent of NTE160?
SQL: SELECT "prefix_class" FROM transistors_db WHERE "equivalent" = 'NTE160'

Question: What is every prefix class for the equivalent of NTE101?
SQL: SELECT "prefix_class" FROM transistors_db WHERE "equivalent" = 'NTE101'

Question: What is every example for the equivalent of NTE160?
SQL: SELECT "example" FROM transistors_db WHERE "equivalent" = 'NTE160'