The ECC88 is a VHF double triode with separate cathodes. The ECC88 was is 48 mm tall. References: Datasheet &. Type ECC88 was first introduced in ECC88 page sheet date. 1. 1. 2. 2. 3. 3. 4. A . 5. B. 6. C. 7. FP. The 6DJ8/ECC88 is a frame grid sharp cut-off twin triode with separate cathodes designed for use in cascode circuits, RF and IF amplifiers, mixer and phase in-.
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It’s an incredible mess at the moment.
This is a very hard way of testing, since “good” tubes must still be rejected when they come from a production series where too many have failed the JAN tests. Also you should try the Svetlana types 6N1P.
When it writes on there “ECC88, 1 ” as you see on the picture here this means this tube was made in Germany, indicated by the number “1”. They are pre-selected in pairs. This is a very critical one, and can cause a good tube to get defective, or give hum, sparks or other noise, when exceeded. So you think you buy NOS, but they’re not. Read this table datashedt the beginning. Made on Philips machines. However not with those! High Quality tubes from the Prague factory Code These are the later technology, and also a technology only very few could make.
ECC88 Datasheet PDF
These were made for the military, as you can see from the sword signs on the back side of the tube. Don’t trust it when a sellers offers those repeatedly for low prices. Read below, how to connect the voltmeter. Is your ECC88 microphonic?
Used tubes of this type generally have more hum and noise.
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. So with them, what you pay is what you get. This is not normal for E88CC, test values can vary widely, and you have to take them as is.
Perfect quality, good boxes. The next three boxes are a short overview of the most important thing to check, in case of a problem. If you want a single you can only take the ones we have, we can not ratasheet up a pair for it. The frame grid wire is so thin, when you open up a defective tube, you can not see it with the bare eye.
Elektronska Industri, former Yugislavia.
Don’t try to be Mr. Done so in when these were made, but JAN testing is still used for semiconductors as well.
TDSL Tube data [ECC88]
So if you order for instance tube 4 from this list, it is pre-matched with tube 8. This may help you more than changing tubes. May seem a silly advice, but it is a popular mistake. The negative result is, end users have to swap tubes all of the time, and desparately try to draw conclusions from this. Lucky on internet auction sites.
Dtaasheet white print like new, from spare equipment.
(Datasheet) ECC88 pdf – Amperex Tube Type (1-page)
In many problem cases, the ECC88 is not used correct. For a true happened story, read the world of NOS.
Check also next item, below here. Sorry, only one tube left. Mind you they draw twice the heater current. Unfortunally a big item particularly with this tube number.
They test all at 15mA, with grid voltage variation of less than 0,2 Volt!! The rejects were probably sold a standard 6N1P, this is normal.