| 
			
			 | 
			
			
				
					
					
					
						
							
							 
							 | 
							
							 
							  
							Triode 
							Introduced in 1932 
							  
							
								
									
										| 
										1 | 
										
										2 | 
										
										3 | 
										
										4 | 
										
										5/sc | 
										
										 
										base  | 
									 
									
										| 
										a | 
										
										f | 
										
										f | 
										
										g | 
										
										k | 
										
										B4/B5 | 
									 
								 
							 
							  
							
								
									| 
									Vf | 
									
									Af | 
									
									Va | 
									
									Vg | 
									
									mAa | 
									
									Ra | 
									
									g | 
									
									gm | 
									
									Pdiss | 
								 
								
									| 
									4 | 
									
									1.1 | 
									
									200 | 
									
									 -6 | 
									
									6  | 
									
									 8300 | 
									
									25  | 
									
									3  | 
									
									1.5 | 
								 
							 
							  
				
					
						| Equivalent | 
						10E/17, 164V, 244V, 5-424, 
						A4110, AG495, AL495, 
						AN4, DN254, Dn284, DW4011, E424N, MH4, 
						K1694,  
						KL70504, 
						REN904,
						REN1104, RS4324, 
						T425, 
						VR37, W308, 
						W428, 
						WE27 | 
					 
				 
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