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← 5R4
Rolling Candidates to replace 5R4
Rectifier — DHT — Octal
⚠ Safety
Drop-In Replacements
✓
5R4G
✓
5R4GY
✓
5R4GYA
✓
5R4GYB
✓
CV717
✓
5R4GA
✓
5R4GB
✓
5R4WGY
Top 10 Picks
5Y3
drop-in
5V
⚠ Close, low Pa
5Z3P
drop-in
5V
⚠ Close, low Pa
5C3S
drop-in
5V
⚠ Low Pa
5U4G
drop-in
5V
⚠ Low Pa
Rolling Candidates (93)
i
Heater:
2.5V
2
3.3V
0
4V
0
5V
2
●
6.3V
3
7.5V
0
10V
0
12.6V
0
16.8V
0
18.9V
0
19V
1
22.4V
0
25V
1
show all (13)
Fit:
Drop-in
0
Adapter
2
Status:
✓ Close
1
✓ Safe
8
⚠ Close, low Pa
16
⚠ Low Pa
68
2 shown (target 5V only)
▣ Compact
⚙ Thresholds filter
5V Heater
(2 candidates)
Tube
Status ↑
Pa
Ah
Fit
673
✓ Safe
—
10
adapter
872A
✓ Safe
—
7.5
adapter
Generated 2026-04-09
Status legend →
User Guide →
Rolling FAQ →
target +
0
selected
pick 1+ to compare
select 1+ candidate to compare
5V4
drop-in
5V
⚠ Low Pa
GZ32
drop-in
5V
⚠ Low Pa
GZ33
drop-in
5V
⚠ Low Pa
GZ34
drop-in
5V
⚠ Low Pa
673
adapter
5V
✓ Safe
872A
adapter
5V
✓ Safe