This document describes the features and characteristics of the UF3A - UF3K series surface mount ultra-fast rectifiers, including glass passivated die construction, low forward voltage drop, high efficiency, surge overload rating up to 100A peak, low power loss, and ultra-fast recovery time.
The UF3A–UF3K family are 3 A ultra‑fast recovery surface‑mount rectifiers designed for automatic assembly. Key features include glass‑passivated die construction, low forward voltage drop, high efficiency, a surge overload rating up to 100 A peak, and UL‑rated plastic packaging.
Mechanical data specify a molded‑plastic case with solder‑plated terminals. Electrical characteristics provide peak repetitive reverse voltages from 50 V to 800 V, an average rectified output current of 3 A at 75 °C, forward voltage of 1.0‑1.7 V at 3 A, and a reverse recovery time of 100 ns. Ordering information lists SMC package options with tape‑and‑reel quantities, and the recommended PCB footprint is 0.060 in (1.52 mm) minimum to 0.185 in (4.69 mm) maximum.
| Average Rectified Output Current @75 °C | 3.0 A |
|---|---|
| Forward Voltage @If=3.0 A | 1.0‑1.7 V |
| Reverse Recovery Time | 100 ns |
| Typical Junction Capacitance | 50 pF |
| Thermal Resistance (RθJC) | 15 K/W |
UF3A is offered in an SMC package, with shipping quantities of 500 units per tape‑and‑reel (T1) or 3000 units per tape‑and‑reel (T3).
No, they are not authorized for use in life‑support equipment without written approval.