6R3

6R3 is also designated EY81.

Description

The 6R3 is a booster diode intended for time base circuits in television receivers. It has a coated unipotential cathode, an E9-1 base, a T61/2 bulb, and a C1-2 top cap. The RETMA basing designation is 9 CB. It can be mounted in any position and has a long heating time.

Ratings

The heater is rated at 6.3 volts and draws 0.81 ampere. The datasheet lists interelectrode capacitances of 6.4 pF from plate to all other elements and 2.5 pF from heater to cathode. Design center maximum ratings include a plate current of 150 mA, a peak plate current of 450 mA, and a maximum voltage between heater and cathode of 600 volts. For flyback conditions, the maximum peak voltage between cathode and heater (cathode positive) is 4500 volts, with an absolute maximum of 5600 volts; the same limits apply between cathode and plate (cathode positive). The maximum peak voltage between heater and plate (heater positive) is 3000 volts, with an absolute maximum of 3800 volts. The maximum pulse duration is specified as 18% of one cycle of the line time base, with a maximum of 18 microseconds.

Equivalence is asserted only where the archive's own literature states it directly, in at least 40 separate documents. Tubes that merely substitute in some circuits are not listed here.

Original manufacturer datasheets for 6R3, hosted by Frank Philipse's Electron Tube Data sheets.

Documents held here and used to write this page.

• **EY 81** (filed under EY81)
• 6R3