|  
					
						| Triotron S434N with 
						B7 base |  | 
				  
					
				
					
						
							| 1 | 2 | 3 | 4 | 5 | 6 | 7 | tc | base |  
							| g2 | g1 | f | f | k,m,g3 |  |  | a | B5 |  
							| m | a | g3 | f | f | k | g2 | g1 | B7 |    HF Pentode Introduced in 
				1933 (B7 base 1935) 
				
					
						| Vf | Af | Va | Vs | Vg | mAa | mAs | ra | gm | Pdiss |  
						| 4 | 1.1 | 200 | 100 | -1.5..-35 | 4.5 | 0.01 | 1,000,000 | 3.5 | 1.5 |    
					
						| Equivalent | 5-447, AF2, AS4100, DH204,
						E447,
						H4129D, HP4105, 
						KL70701S, MT4110,
						RENS1294, RS4347, T4700, 
						TE47, VMP4, VP4, W519 |  
				    |