1633 — Candidate to replace following?

Small Signal Triode — Octal

Equivalents — Same Tube, Different Names

✓ 25SN7GT✓ 13D1✓ CV423✓ 12SX7

Top 10 Picks

Your Tube

Base: Octal

Heater: 25V / 0.15A

Type: small signal triode

mu:18gm:2.6mA/Vra:6,900ΩIa:11.5mAPa:2.5WCgp:3.6pF

Pinout (Octal)

g1_2a2k2g1_1a1k1

Candidates to replace (10)

Heater:

Fit:

Status:5 shown

6.3V Heater(4 candidates)

Tube	Status ↑	Pa	Ah	Fit
6SL7	✓ Safe	1W-60%	0.3	drop-in
6SU7	✓ Safe	1W-60%	0.3	drop-in
ECC33	✓ Safe	2.5W	0.4	drop-in
ECC35	✓ Safe	1.5W-40%	0.4	drop-in

12.6V Heater(1 candidates)

	Tube	Status ↑	Pa	Ah	Fit
	B36	✓ Close	2.5W	0.3	drop-in

target +0 selectedpick 1+ to compareselect 1+ candidate to compare