3Q5GT
3Q5GT has no equivalent designation confirmed by the archive. Completed sales put the typical price at $11.99 per tube.
What 3Q5GT Sells For
| Measure | Per tube |
|---|---|
| Median | $11.99 |
| Typical range (25th–75th) | $9.94 – $14.45 |
| Most sales (10th–90th) | $9.15 – $26.99 |
| Extremes incl. outliers | $8.46 – $37.87 |
| Completed sales | 19 |
By Brand
| Brand | Median | Range | Sales |
|---|---|---|---|
| Sylvania | $13.08 | $11.49 – $21.79 | 5 |
| RCA | $12.49 | $11.99 – $15.78 | 4 |
By Condition
| Condition | Median | Sales |
|---|---|---|
| NOS | $12.99 | 7 |
| used | $11.49 | 9 |
Per-tube prices from completed sales, 2026-02-22 to 2026-09-11. Matched pairs and quads are divided out. See the price index for how these move over time.
Datasheets
Original manufacturer datasheets for 3Q5GT, hosted by Frank Philipse's Electron Tube Data sheets.
| Manufacturer | Designation | Datasheet |
|---|---|---|
| Tung-Sol | 3Q5GT | PDF (142 KB) |
| RCA (HB3) | 3Q5GT | PDF (65 KB) |
In the Archive
Documents held here and used to write this page.
- DIRECT INTERELECTRODE CAPACITANCES
2 further designations appear alongside 3Q5GT in the literature but below the evidence threshold used here, so they are not listed as equivalent.