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				Triode 
				Introduced in 1927   
				
					
						| Vf | Af | Va | Vg | mAa | ra | gm | Pdiss |  
						| 4 | 1 | 250 | -3.5 | 6 | 12,500 | 2.4 | 1.5 |  
				
					
						| Equivalent | 10E/17, 164V, 244V, 5-424, 
						A4110, AG495, AL495, 
						AN4, DN254, Dn284, DW4011, I253, MH4, 
						K1694,  
						KL70504, 
						REN904,
						REN1104, RS4324, 
						T425, 
						VR37, W308, 
						W428, 
						WE27 |  |  |  |