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← 50
50 — Candidate to replace following?
Power Triode — DHT — UX4
⚠ Safety
Jump to:
Equivalents
Your Tube
Top 10
Targets
Equivalents — Same Tube, Different Names
✓
VT-50
✓
CV2533
Top 10 Picks
842
drop-in
7.5V
✓ Safe
801A
drop-in
7.5V
✓ Safe
VT-25
drop-in
7.5V
✓ Safe
Your Tube
Base:
UX4
Heater:
7.5V / 1.25A
Type:
power triode
DHT
i
mu:
3.8
gm:
2.1
mA/V
ra:
1,800
Ω
Ia:
55
mA
Pa:
25
W
Pinout (UX4)
h
a
g1
h
Candidates to replace (11)
Heater:
2V
0
2.5V
2
5V
0
6.5V
1
7V
1
7.5V
3
●
10V
0
show all (7)
Fit:
Drop-in
3
Adapter
0
Status:
✓ Safe
7
⚠ Low Pa
4
3 shown (target 7.5V only)
▣ Compact
⚙ Thresholds filter
7.5V Heater
(3 candidates)
Tube
Status ↑
Pa
Ah
Fit
842
✓ Safe
12
W
-52%
1.25
drop-in
801A
✓ Safe
20
W
-20%
1.25
drop-in
VT-25
✓ Safe
10
W
-60%
1.25
drop-in
Generated 2026-04-09
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selected
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