UG4A to UG4D ultrafast efficient plastic rectifier with reverse voltage of 50 to 200 volts and forward current of 4.0 amperes. It features a flammability classification of 94V-0 and is ideally suited for use in very high frequency switching power supplies, inverters, and as free wheeling diodes. The rectifier has an ultrafast recovery time for high efficiency and soft recovery characteristics. It also has excellent high temperature switching and a glass passivated junction. The rectifier is capable of high temperature soldering and has a maximum weight of 0.045 ounce (1.2 grams).
The UG4A‑UG4D series are ultrafast, efficient plastic rectifiers designed for high‑frequency switching power supplies, inverters, and free‑wheeling diode applications. The devices feature a UL‑94V‑0 flammability‑rated plastic package and can withstand high‑temperature soldering up to 250 °C for 10 seconds.
The datasheet lists mechanical dimensions, maximum voltage and current ratings, reverse‑recovery times, junction capacitance, and thermal resistance. Characteristic curves illustrate forward current, instantaneous forward voltage, reverse leakage, and temperature dependence for each model in the UG4A‑UG4D range.
| Package Type | JEDEC DO‑201AD molded plastic |
|---|---|
| Maximum Repetitive Peak Reverse Voltage (VRRM) | 50 V (UG4A) to 200 V (UG4D) |
| Maximum Average Forward Rectified Current | 4.0 A |
| Maximum Reverse Recovery Time (t_r) at 25 °C | 20 ns |
| Typical Junction Capacitance | 20 pF |
| Thermal Resistance (junction‑to‑ambient) | 25 °C/W |
All UG4A‑UG4D devices are rated for a maximum average forward rectified current of 4.0 A.
The reverse recovery time is typically 20 ns at 25 °C.