NPN Silicon RF Transistor
BFS 20 is an epitaxial NPN silicon planar RF transistor in TO 236 plastic package (23 A 3 DIN 41 869), intended for use in film circuits.
The transistor BFS 20 is marked "NA". It is also available upon request with changed terminal sequence (emitter and base terminal interchanged) under the designation BFS 20R (mark "NZ")