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← 12D4
Rolling Candidates to replace 12D4
Rectifier — Octal
⚠ Safety
Drop-In Replacements
✓
12D4A
Top 10 Picks
12X4
adapter
12.6V
⚠ Close, low Pa
12AX4
adapter
12.6V
⚠ Low Pa
Rolling Candidates (93)
i
Heater:
2.5V
2
3.3V
0
4V
0
5V
2
6.3V
5
7.5V
0
10V
0
12.6V
0
●
16.8V
1
18.9V
1
19V
1
22.4V
1
25V
1
show all (13)
Fit:
Drop-in
0
Adapter
0
Status:
✓ Close
6
✓ Safe
8
⚠ Close, low Pa
38
⚠ Low Pa
41
0 shown (target 12.6V only)
▣ Compact
⚙ Thresholds filter
No candidates match the selected filters.
Show candidates on other heater voltages (12 additional)
Generated 2026-04-09
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