E444 DIODO-TETRODO DETECT.-AMPLIFIC. DE BF |  Europeo | Vf=4V | If=1,1A | Vp=200V | Ip=0,35mA | Vs=33V | | Vg=-2,3V | ri=2,5M | µ=1000 | | | E444N DIODO-TETRODO DETECT.-AMPLIFIC. DE BF |  Europeo | Vf=4V | If=1,1A | Vp=200V | Ip=4mA | Vs=90V | Is=0,5mA | Vg=-3V | ri=200K | µ=600 | |
| E444S DIODO-TRIODO DETECT.-AMPLIF. DE BF |  Europeo | Vf=4V | If=1A | Vp=200V | Ip=6mA | Vg=-3,5V | ri=1,5K | µ=30 | | | |
| E445 TETRODO DE PEND. VAR. AMPLIFIC. DE RF Y FI |  Europeo | Vf=4V | If=1,1A | Vp=200V | Ip=6mA | Vs=100V | Is=0,8mA | Vg=-2V | ri=300K | µ=300 | |
| E445M TETRODO DE PEND. VAR. AMPLIFIC. DE RF Y FI |  Europeo | Vf=4V | If=1,1A | Vp=200V | Ip=6mA | Vs=100V | Is=0,8mA | Vg=-2V | ri=30K | µ=300 | |
| E446 PENTODO AMPLIFICADORA DE RF |  Europeo | Vf=4V | If=1,1A | Vp=200V | Ip=3mA | Vs=100V | Is=1,2mA | Vg=-2V | ri=2,2M | µ=5000 | |
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