The 2D4B is a pair of indirectly heated signal diodes with separate cathodes. The 2D4A has the same ratings but a single cathode and a B5 base cap.The reverse is plain.The balloon envelope is 41 mm in diameter, and excluding the B7 base pins is 74 mm tall.References: Data-sheet & 1043. Type 2D4B was first introduced in 1937. See also 1937 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | m | a(2) | k(2) | h | h | k(1) | a(1) |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | mAa |
| 4.0 | 0.35 | 200 | 0.8 |
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Updated November 22, 2016.
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