The U625 is a half wave rectifier. It came in a U650 box. The input for the U650 was up to 300 V RMS and the maximum current was 40 mA. It is probable that the U625 has lower ratings and was superseded by the U650.![](../pics/aaa1109a.jpg)
The etched dome identification clearly states U625.The balloon envelope is 41 mm in diameter, and excluding the B4 base pins is 83 mm tall.Reference: 1043. Type U625 was first introduced in 1930. See also 1930 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | ![](../static/key.gif) a | nc | f | f |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | μ | ![](../static/key.gif)
| 6.0 | 0.25 | | | -1 | | | | | |
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Updated January 07, 2022.
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