Sylvania

5Z3 / 5Z3G BLACK PLATE JAN

28.00 USD

Mil. Spec. full-wave rectifier JAN 5Z3 / 5Z3G (VT145) black-plate double bottom square getter tubes manufactured in USA by Sylvania. Original box contract (on box) no. DLA900-81-C-0383, NATO (OTAN) code 5960-00-188-8601. Extremely high quality tube for hi-end audio amplifier using Hirata TANGO transformer and WE 300B tube. 5Z3 = 5Z3G = VT-145. This tube is electrically identical to a 5U4G but with a different base (4 pin), you can use an adapter base 5Z3> 5U4G (not included and not available in dbTubes store)

Condition

New Old Stock (New in box)

	Tube Matching 6.00 USD by tube
LEARN MORE 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.