Schotttky diode rectifiers axial taiwan semiconductor 1n5817 r0 buy schottky diode rectifier 1n5817 1a 20v is a diode device that is available in either 1a or 3a forward current both versions are of epitaxial construction and have guard rings for transient protection these devices are ideal for use in low voltage high frequency equipment and for free wheeling and polarity protection applications taiwan semiconductor 1n5817 r0 schottky diode rectifier 1a 20v