| Manufacturer | Part # | Datasheet | Description |
 NXP Semiconductors |
UF21
|
626Kb / 17P |
PENTODE with variable mutual conductance for use as H.F., I.F. and L.F. amplifier
19.8.1948 |
 List of Unclassifed Man... |
14A5
|
51Kb / 1P |
BEAM PENTODE
|
 NXP Semiconductors |
EF89
|
281Kb / 11P |
PENTODE WITH VARIABLE MUTUAL CONDUCTANCE FOR USE AS R.F. or I.F. AMPLIFIER
12.12.1955 |
 List of Unclassifed Man... |
25CU6
|
93Kb / 2P |
PENTODE
|
 General Electric Compan... |
6BZ6
|
549Kb / 5P |
PENTODE
|
|
6AG7
|
427Kb / 5P |
PENTODE
|
 List of Unclassifed Man... |
R142
|
178Kb / 4P |
PENTODE
|
|
6AH6
|
99Kb / 3P |
PENTODE
Mar. 1 1948 |
|
6AJ5
|
120Kb / 3P |
PENTODE
JULY 1,1948 |
|
6AR5
|
32Kb / 1P |
PENTODE
MAY 3, 1948 |