The SU2150 is the EHT rectifier from Cossor. The SU2150 has a higher voltage and lower current than the SU2150A classic HT rectifier.The 'top hat' anode connector on this valve makes it a later production than the SU2150A referenced above. This suggests that the two valves existed side by side during the 1930's.The effective series resistance needs to be 100,000 Ω and the reservoir capacitor is limited to 0.25 μF.
The saddle shaped anode and oxide coated rod cathode made the Cossor EHT rectifiers the most reliable.The classic envelope is - mm in diameter, and excluding the B4 base pins is - mm tall.References: 1040 & 1043. Type SU2150 was first introduced in 1937. See also 1937 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | tc |  nc | nc | f | f | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | mAa |
| 2.0 | 1.15 | 8,000 | 2.0 |
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Updated January 03, 2022.
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