Every database keyword is used to form a heading within the classified index section.
Use the right hand drop-down menu for faster navigation to a main index heading.
So to find all valves with a 160 mA heater rating the classified index is the ideal place to start.
Alternatively each term may be searched for but the results can be ambiguous as looking for triode will find all valves with a triode section.
For a detailed parameter search please refer to our advanced search option. This is more complex but very specific in the results generated.