Sensibly equivalent¶ to:
10PL12 50BM8 LN119
The UCL82 triode pentode was designed for single ended audio output stages in universal mains domestic equipment, normally radios. In this application the output of 3 Watts was more than adequate for most rooms. For television use, with more valves in the chain, the 300 mA version the PCL82 would have been appropriate. The standard for AC mains sets using a mains transformer would have been the ECL82.
The triode is here seen face on and can be seen to be full height. The triode grid supports are copper without heat sinking flanges. Behind can be seen the pentode control grid copper support rods complete with heat radiating fins. The pentode is mounted at right angles to the triode electrode stream.
The pentode on the left and triode on the right. The pentode is in fact constructed as a beam tetrode.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 70 mm tall.
References: Datasheet, 3002 & 1040. Type UCL82 was first introduced in 1956.
Absolute Maximum Operating Conditions¶
Updated July 29, 2015.