Tube cross-reference
8408 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 8408 voltage dual tetrode. Compare core specifications and verify every restriction before using a replacement.
Exact variations of 8408
These designations belong to the same electrical variation group. Their names may differ because of international standards, manufacturing tolerances, or materials, but they are recorded as electrically equivalent—not merely substitutes.
YL1130 Voltage Dual Tetrode
- Base
- Not recorded
- Socket
- B9A
- Base pins
- 9
- Sections
- 2
- Heater voltage
- 11 V
- Heater current
- 3.1 A
Verify before substituting
Matching a base or heater voltage is not enough to prove that two tubes are interchangeable. Check pin connections, heater current, maximum ratings, bias requirements, warm-up behavior, and the equipment manufacturer’s service documentation before making a substitution.
View the complete 8408 specifications →