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← UU5
Rolling Candidates to replace UU5
Rectifier — B4
⚠ Safety
Drop-In Replacements
✓
MU14
✓
APV4
✓
CV1039
✓
CV3760
Top 10 Picks
UU4
drop-in
4V
⚠ Close, low Pa
AZ31
adapter
4V
⚠ Close, low Pa
MU12
adapter
4V
⚠ Close, low Pa
RGN1064
adapter
4V
⚠ Close, low Pa
UU6
adapter
4V
⚠ Close, low Pa
V41
adapter
4V
⚠ Close, low Pa
IW3
adapter
4V
⚠ Close, low Pa
IW4/350
adapter
4V
⚠ Close, low Pa
RGN2304
adapter
4V
⚠ Close, low Pa
Rolling Candidates (64)
i
Heater:
2.5V
3
4V
0
●
5V
13
6.3V
5
7.5V
0
10V
1
12.6V
2
16.8V
1
18.9V
1
22.4V
1
25V
1
show all (11)
Fit:
Drop-in
0
Adapter
0
Status:
✓ Close
14
✓ Safe
14
⚠ Close, low Pa
14
⚠ Low Pa
22
0 shown (target 4V only)
▣ Compact
⚙ Thresholds filter
No candidates match the selected filters.
Show candidates on other heater voltages (10 additional)
Generated 2026-04-09
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