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← 45
45 — Candidate to replace following?
Power Triode — DHT — UX4
⚠ Safety
Jump to:
Equivalents
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Top 10
Targets
Equivalents — Same Tube, Different Names
✓
UX245
✓
245
✓
145
✓
345
✓
45A
✓
A245
✓
CV610
✓
EX645
✓
FR304
✓
G45
✓
L45
✓
MX245
✓
PX2450
✓
T45
✓
VT-45
Top 10 Picks
2A3
drop-in
2.5V
⚠ Low Pa
Your Tube
Base:
UX4
Heater:
2.5V / 1.5A
Type:
power triode
DHT
i
mu:
3.5
gm:
2.18
mA/V
ra:
1,610
Ω
Ia:
34
mA
Pa:
10
W
Cgp:
7
pF
Pinout (UX4)
h
a
g1
h
Candidates to replace (12)
Heater:
1.5V
0
2V
0
2.5V
0
●
5V
0
6.5V
0
7V
1
7.5V
1
show all (7)
Fit:
Drop-in
0
Adapter
0
Status:
✓ Close
1
✓ Safe
1
⚠ Low Pa
10
0 shown (target 2.5V only)
▣ Compact
⚙ Thresholds filter
No candidates match the selected filters.
Show candidates on other heater voltages (6 additional)
Generated 2026-04-09
Status legend →
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0
selected
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select 1+ candidate to compare