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← EZ81
Rolling Candidates to replace EZ81
Rectifier — Noval
⚠ Safety
Drop-In Replacements
✓
6CA4
✓
CV5072
✓
U709
✓
UU12
Top 10 Picks
6EC4
adapter
6.3V
✓ Close
6AU4
adapter
6.3V
✓ Close
6BE3
adapter
6.3V
✓ Close
6CG3
adapter
6.3V
✓ Close
6CJ3
adapter
6.3V
✓ Close
6325
adapter
6.3V
✓ Safe
6BY5
adapter
6.3V
✓ Safe
6BJ3
adapter
6.3V
⚠ Close, low Pa
6W4
adapter
6.3V
⚠ Close, low Pa
5852
adapter
6.3V
⚠ Close, low Pa
Rolling Candidates (83)
i
Heater:
2.5V
2
3.3V
0
4V
2
5V
17
6.3V
7
●
7.5V
0
12.6V
1
16.8V
1
18.9V
1
19V
1
22.4V
1
25V
1
show all (12)
Fit:
Drop-in
0
Adapter
7
Status:
✓ Close
19
✓ Safe
15
⚠ Close, low Pa
32
⚠ Low Pa
17
7 shown (target 6.3V only)
▣ Compact
⚙ Thresholds filter
6.3V Heater
(7 candidates)
Tube
Status ↑
Pa
Ah
Fit
6EC4
✓ Close
11
W
2.1
adapter
6AU4
✓ Close
6.5
W
1.8
adapter
6BE3
✓ Close
6.5
W
1.2
adapter
6CG3
✓ Close
6.5
W
1.8
adapter
6CJ3
✓ Close
6.5
W
1.8
adapter
6325
✓ Safe
—
2.7
adapter
6BY5
✓ Safe
—
1.6
adapter
Generated 2026-04-09
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