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← 6F23
6F23 — Candidate to replace following?
Small Signal Pentode — Noval
⚠ Safety
Jump to:
Equivalents
Your Tube
Top 10
Targets
Equivalents — Same Tube, Different Names
✓
EF812
✓
6EL7
✓
Z749
Top 10 Picks
EF183
drop-in
6.3V
✓ Safe
EF184
drop-in
6.3V
✓ Safe
EF80
drop-in
6.3V
✓ Safe
Your Tube
Base:
Noval
Heater:
6.3V / 0.3A
Type:
ss pentode
mu:
64
gm:
9.2
mA/V
ra:
7,000
Ω
Ia:
10
mA
Pa:
3
W
Vs:
170
V
Cgp:
0.01
pF
Pinout (Noval)
k
g1
k
h
h
Candidates to replace (4)
Heater:
3.6V
1
6.3V
3
●
show all (2)
Fit:
Drop-in
3
Adapter
0
Status:
✓ Safe
4
3 shown (target 6.3V only)
▣ Compact
⚙ Thresholds filter
6.3V Heater
(3 candidates)
Tube
Status ↑
Pa
Ah
Fit
EF183
✓ Safe
2.5
W
-17%
0.3
drop-in
EF184
✓ Safe
2.5
W
-17%
0.3
drop-in
EF80
✓ Safe
2.5
W
-17%
0.3
drop-in
Generated 2026-04-09
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selected
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select 1+ candidate to compare
ia
a
g2
g3