| Type | Substitutes | Base Diagram |
|---|---|---|
| E447 | H4129D, RENS1294, A4AMS, A4AMS2, TE47, NVS43, WE24, LAS324, HP4106, RS4347, S432, VMP4, 4A10_Ultron, 5-447, DH204, MT4110, S434N, T4700, TM-C3G-PV, VH2, W447, W519 | |
| Web References | E447 (Philips) @ Franks Electron Tubes? E447 @ Radiomuseum | |