The 681/689 series are center‑tap and doubler rectifier diodes offered in standard and fast‑recovery versions. They are supplied with various terminal configurations (P, N, D) and are marked with part numbers printed on the body.
Key characteristics include reverse voltage ratings from 100 V to 600 V, continuous forward current up to 15 A, surge current capability of 150 A, recovery times as fast as 500 ns, and a junction temperature rating of 150 °C. Thermal data list a junction‑to‑ambient resistance of 20 °C/W and a typical weight of 10 g.
| Reverse voltage rating | 100 V – 600 V |
|---|---|
| Maximum forward current | 15 A |
| Surge current rating | 150 A |
| Recovery time | 500 ns |
| Junction temperature rating | 150 °C |
| Storage temperature range | -65 °C to 150 °C |
| Typical weight | 10 g |
| Thermal resistance (junction‑to‑ambient) | 20 °C/W |
The 681‑6 part is rated for a reverse voltage of 600 V.
The diodes can carry up to 15 A of continuous forward current.
The series can handle surge currents up to 150 A.
The recovery time is specified as 500 ns.