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EY87Sensibly equivalent¶ to:6S2A
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The EY87 is an EHT rectifier designed for EHT derived from the line timebase flyback. The DY87 has the same high voltage rating but has a 1.4 Volt 0.55 Amp heater.Clearly reseller Bentley have imported this valve into the UK and have labelled it as of Foreign origin.![](../pics/aai0440a.jpg)
The cathode and screen fixed to the base and the anode bell held from the top.![](../pics/aai0440b.jpg)
The anode is closed at the top and ends within the lower screen so as to contain the X-ray radiation produced by the high energy electrons bombarding the metal.The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins is 61 mm tall.Reference: Data-sheet. Type EY87 was first introduced in 1956. See also 1956 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | tc | ![](../static/key.gif) h,k,s | h | ic | h,k,s | h | h,k,s | ic | h | h,k,s | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | mAa | ![](../static/pdflogo.gif)
| 6.3 | 0.09 | 18kV | 0.15 |
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Updated July 24, 2021.
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