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12AT6 / HBC90
  • 12AT6 / HBC90
  • 12AT6 / HBC90
Philips

12AT6 / HBC90

11.00 USD
7.00 USD Save 4.00 USD

Mint New Bulk (NB) from 100 trays, miniature glass double-diode-triode tubes manufactured in Holland by Philips. These tubes are designed as double diode detectors and high-mu voltage amplifiers for radio receivers (with an amplification factor of 70). With top halo getter, these tubes are printed in white 12AT6 PHILIPS.

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

Philips
298 Items

Data sheet

Base
7 pin miniature B7G
Boite type
2/2
Emplacement
43+3
Quide
2700
Fonction
Double diode triode
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