12CA5 BLACK PLATE
  • 12CA5 BLACK PLATE
  • 12CA5 BLACK PLATE
Sylvania

12CA5 BLACK PLATE

5.00 USD

 Best quality miniature glass beam pentodes manufactured in the United States by renowned Sylvania. From bulk trays, these 7 pin tubes are designed for an audio frequency power output of up to 5 watts. They come with long black plates, and top round getters. They are printed in green SYLVANIA MADE IN U.S.A. with 3 digit production codes, and glass etched 12CA5 U.S.A.

Condition

Tube Matching
Tube Matching
6.00 USD by tube

WHY ?

A tube may have one, two, or three internal sections depending on the purpose of the tube; somtimes these sections are all the same, sometimes they are different. Due to manufacturing and material tolerances, there may be slight differences between the original specification and the actual tube. Tube matching tests each one of these internal sections and selects tubes, compared to original specifications at manufacture, for balanced performance and good sound.

HOW ?

All our tubes are tested by us prior to packing on our Stark, AVO, Simpson or RF Laboratories Inc. calibrated testers. On request for tube matching, tubes are matched for Mutual Conductance in Micromhos and Plate Current in Milliamps on our Amplitrex or Radioelec Duovac testers, with results printed for each  individual tube. Certain tubes difficult to test are matched for Mutual Conductance in Micromhos only on one of our regular calibrated testers. On request we can also test for Microphonics.
Quantity

Sylvania
30 Items

Data sheet

Base
7 pin miniature B7G
Boite type
1/2
Emplacement
43
Fonction
Pentode
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