EM7 / EM-7 miniature electrometer triode tube. Designed to work in a variety of electrometric devices. Durability at least 500 hours.

Nominal electrical characteristics of the EM-7:

Heater voltage, V: 1;

Heater current, mA: 18;

The voltage on the anode, V: 7;

The voltage on the first grid, In: -2;

The current in the anode circuit, uA: 250;

Slope, uA / V: 80 to 250;

Gain: 1.5;

The capacity of the input, pF: 1.9