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The 5B/110M is a telephone repeater output pentode that can produce a two Watt output into a 5 kΩ load with less than 5% total harmonic distortion.

The anode has a maximum dissipation of 11 Watts. The open winding of the suppressor grid contrasts with the small pitch of the inner two grids.

The STC logo for professional valves. The company's commercial brand name was Brimar.

The wide glass tube envelope is 28 mm in diameter and, excluding the B8B base pins, is 66 mm tall.

Reference: Data-sheet. Type 5B/110M was first introduced in 1947. See also 1947 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.