D121N18B Infineon - RECTIFIER DIODE
D121N18B Description
Infineon Technologies D121N18B is a rectifier diode rated at 1800 V and 120 A. Typical applications include AC-to-DC rectification in drives and power supplies, freewheeling paths and battery charging.
USComponent (Young & New Century LLC) supplies power modules, thyristors, diodes and other industrial components, including legacy parts. Contact us for a quote on the D121N18B, and please confirm ratings against the datasheet before ordering.
Summary of Features
D121N18B is a 1,800 V, 121 A rectifier diode (disc).
Target Applications
Infineon D121N18B is used for AC/DC power conversion and control: controlled and uncontrolled rectifiers, DC motor drives, soft starters, battery chargers, welding equipment, heater and temperature control, and AC power controllers.
Key Specifications
D121N18B is a 1,800 V, 121 A rectifier diode (disc). Source: manufacturer datasheet.
| Parameter | Value |
|---|---|
| Product type | Rectifier diode (disc) |
| Repetitive peak reverse voltage (VRRM) | 1,800 V |
| Rated forward / output current | 121 A |
| Datasheet | Available on this page (PDF) |
Technical document (PDF) | Request a quote for D121N18B (reply within 24 hours)

