What Is the UF4007? Ultrafast Rectifier Diode and Uses
The UF4007 is an ultrafast rectifier diode rated 1 A and 1000 V. It is in the same voltage/current class as the 1N4007 but has a far shorter recovery time; used in SMPS, high-frequency rectification and snubbers. For 50/60 Hz mains the 1N4007 is enough; the UF4007 is really for high frequency.
The UF4007 is an ultrafast rectifier diode rated 1 A and 1000 V reverse voltage. It is in the same voltage/current class as the popular 1N4007 but has a far shorter recovery time. For the concept, see what is a rectifier diode.
What is the UF4007 used for?
Switching power supplies (SMPS), high-frequency rectification, snubbers and freewheeling. Since standard rectifiers like the 1N4007 are too slow at high frequency (reverse-recovery loss), the UF4007 replaces them in these applications.
Specifications
| Parameter | Value |
|---|---|
| Type | Ultrafast rectifier |
| Current (IF) | 1 A |
| Reverse voltage (VR) | 1000 V |
| trr | Short (ultrafast; ~ns range) |
Watch out
The UF4007 shares the body and voltage class of the 1N4007 but its forward drop can be slightly higher. For 50/60 Hz mains rectification the 1N4007 is enough and cheaper; the UF4007 is really for high frequency/switching. It is not as fast as a Schottky but withstands far higher voltage.
Equivalents
- 1N4007: the same-class standard (slow) rectifier.
- UF4004: same family, lower voltage (400V).
- MUR160 / FR107: similar fast/ultrafast diodes.
Find it in our catalog
Use the UF4007 search.