| .jpg)  | 
				 
					
						| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | base |  
						| s,nc | -f | a | g2 | g1 | - | f+ | fct | octal |  Beam power pentode for battery 
				receivers  with central tap for 1.4V, 0.1A Introduced in 1939 
					
						| Vf | Af | Va | Vs | Vg | mAa | mAs | ra | gm | Pout |  
						| 2.8 | 0.05 | 90 | 90 | -4.5 | 9.5 | 2.2 | 90,000 | 2.2 | 0.27 |    
					
						| Equivalent | DL33, N15, N16, VT221 |  |