12SJ7
12SJ7 has no equivalent designation confirmed by the archive. Completed sales put the typical price at $6.25 per tube.
What 12SJ7 Sells For
| Measure | Per tube |
|---|---|
| Median | $6.25 |
| Typical range (25th–75th) | $5.00 – $8.02 |
| Most sales (10th–90th) | $2.50 – $10.40 |
| Extremes incl. outliers | $0.80 – $42.75 |
| Completed sales | 14 |
By Brand
| Brand | Median | Range | Sales |
|---|---|---|---|
| RCA | $5.80 | $2.50 – $6.25 | 7 |
By Condition
| Condition | Median | Sales |
|---|---|---|
| NOS | $5.80 | 7 |
| used | $6.11 | 4 |
Per-tube prices from completed sales, 2026-06-13 to 2026-08-21. Matched pairs and quads are divided out. See the price index for how these move over time.
Datasheets
Original manufacturer datasheets for 12SJ7, hosted by Frank Philipse's Electron Tube Data sheets.
| Manufacturer | Designation | Datasheet |
|---|---|---|
| General Electric | 12SJ7 | PDF (304 KB) |
| Tung-Sol | 12SJ7 | PDF (126 KB) |
In the Archive
Documents held here and used to write this page.
- **Description and Rating**
1 further designation appears alongside 12SJ7 in the literature but below the evidence threshold used here, so it is not listed as equivalent.