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705ASensibly equivalent¶ to:2J/40E 2T/450E A232 CV3587 CV8238 TH705A
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The 705A is an EHT power rectifier with a PIV rating of 35,000 Volts. The average rectified current is 100 mA with a peak of 500 mA. The construction is all glass with the lead-out wires being fixed to the main pins that are held in a ceramic disc outside the envelope. The special base clamps to this ceramic disc.The filament is thoriated tungsten and when powered glows a bright orange.See 705A from Western Electric for more details. This exhibit shows a different style of lettering.The wide glass tube envelope is 58 mm in diameter, and excluding the B4A base pins is 117 mm tall.References: Data-sheet & 1040. Type 705A was first introduced in 1943. See also 1943 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | tc | f | fct | f | nc | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | mAa |
| 5.0 | 5.0 | 12.000 | 500 |
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Updated January 05, 2022.
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