Tube cross-reference
2AS2 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 2AS2 rectifier - tv line scan boost. Compare core specifications and verify every restriction before using a replacement.
Exact variations of 2AS2
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.
Replacement tubes for 2AS2
The following tubes are recorded as possible replacements for 2AS2. This direction does not establish that 2AS2 can replace them.
Rectifier - TV Line Scan Boost
The database records 2AS2A as a possible replacement for2AS2.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - TV Line Scan Boost |
| Construction | Rectifier | Rectifier |
| Base | Not recorded | 12EW |
| Socket | B9A | B7G |
| Base pins | 12 | 12 |
| Sections | 1 | 1 |
| Heater voltage | 2.5 V | 2.5 V |
| Heater current | 0.33 A | 0.4 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 2AS2 specifications →