Page 1. Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8. Page 9. Page Page Page Page Page Page Page The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 45 mm tall. References: Datasheet &. Type E88CC was first introduced. Page 1. Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8.

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You can order any pair you like, as long as we have it available.

All from the same factory code. They are pre-selected in pairs. However they bias not as trhey shouls in all circuits, and have slightly lower gain.

Done so in when these were made, but JAN testing is still used for semiconductors as well. What is best, we had a small lot, and we have been able to select them all in perfectly balanced and matched pairs. The ones we sell, are “EB”, also when not specified like this, it’s what they are. Leave it up to a technician otherwise.

Is your ECC88 microphonic? Don’t trust it when a sellers offers those repeatedly for low prices. So you can see it yourself. When frame grid tubes, we write it in the description. This batch had very good values. Original old blue boxes.


Also read here Uh-k.

This is not normal for E88CC, test values e88cx vary widely, and you have to take them as is. Tube is offered as used, but may be new.

Now of course manufacturers could still sell such tubes on the commercial market, but the military refused to take those. These have lower noise, and less distortion. Clear white print like new, from spare equipment. Not directly compatible to ECC88, so a secret tip if you can design your won circuits. Large dimension ECC88, with higher dissipation. Check also next item, below here. These were made for the military, as you can see from the sword signs on the back side of the tube.

If you don’t know the answer High Quality tubes from the Prague factory Code Some tubes from equipment are sometimes actually never used. So if you order for instance tube 4 from this list, it is pre-matched with tube 8. EHX new production under the microscope.


E88CC Datasheet PDF –

This is a much improverd version of ECC88 made, with higher voltage capabilities, higher plate dissipagtion, and better in many many ways. On internet auction sites, tubes are re-labelled, retro-gold plated, re-branded and used tubes are put in re-printed new boxes with the stamps ne-newed.


This is a jewel. JAN tested, for higher reliability. The frame grids have generally better parameter stability, lower noise and lower hum.

E88CC Datasheet

Elektronska Industri, former Yugislavia. These appear like that. Here are the possible answers, only ONE answer is correct. Used tubes of this type generally e88xc more hum and noise. JAN Testing is a military proces for lot qualification, which makes sure that weak production series will not pass as a whole.

Lucky on internet auction sites. So all four systems of this pair are the same.

So you think you buy NOS, but they’re not. Made on Philips machines. Strangely so, but I see it over and over again.

E88CC Datasheet PDF

Called Uf Test with Datawheet between Pin 4 and 5. It’s an incredible mess at the moment. The negative result is, end users have to swap tubes all of the time, and desparately try to draw conclusions from this.