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← 12X4
Rolling Candidates to replace 12X4
Rectifier — B7G
⚠ Safety
Top 10 Picks
12D4
adapter
12.6V
✓ Close
12AX4
adapter
12.6V
✓ Safe
Rolling Candidates (81)
i
Heater:
2.5V
5
3.3V
0
4V
2
5V
24
6.3V
19
7.5V
1
12.6V
2
●
16.8V
1
18.9V
1
22.4V
1
25V
2
show all (11)
Fit:
Drop-in
0
Adapter
2
Status:
✓ Close
27
✓ Safe
31
⚠ Close, low Pa
14
⚠ Low Pa
9
2 shown (target 12.6V only)
▣ Compact
⚙ Thresholds filter
12.6V Heater
(2 candidates)
Tube
Status ↑
Pa
Ah
Fit
12D4
✓ Close
5.5
W
0.6
adapter
12AX4
✓ Safe
—
0.6
adapter
Generated 2026-04-09
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