This document describes the features and characteristics of SF31 to SF39 super fast rectifier diodes, including high current capability, high surge current capability, high reliability, low reverse current, low forward voltage drop, and super fast recovery time.
The SF31‑SF39 series are super fast recovery rectifier diodes with high current and surge capability, low reverse current, low forward voltage drop and a fast recovery time. The handbook lists key features, mechanical dimensions, and the recommended mounting and polarity markings.
Electrical specifications include reverse voltage ratings from 50 V to 1000 V, average forward current of 3 A, peak surge current of 125 A, forward voltage drops between 0.95 V and 1.7 V, and a reverse recovery time of 35 ns. Characteristic curves for forward voltage, reverse recovery, and derating are provided along with temperature limits and storage conditions.
| Forward Voltage Drop (VF) at 3 A | 0.95 V – 1.7 V |
|---|---|
| Reverse Recovery Time (Trr) | 35 ns |
| Junction Capacitance (Cj) | 50 pF |
| Case Type | DO‑201AD molded plastic |
| Weight | 1.21 g |
The reverse recovery time is specified as 35 ns.
At a forward current of 3 A, the forward voltage drop ranges from 0.95 V to 1.7 V depending on the model.