D798N18T Infineon - RECTIFIER DIODE

D798N18T Description

Rated at 1800 V and 800 A, the Infineon Technologies D798N18T is a rectifier diode. It is used in input rectifiers, freewheeling and clamping circuits, battery chargers and welding power sources. Many of these parts are still in service in machines built years ago, and a direct replacement is often the fastest way to get one running again.

We help engineers and repair technicians find parts like the D798N18T, including obsolete ones. Send a quick RFQ for current pricing and delivery. Before ordering, please confirm ratings and pin-out with the official datasheet.

Summary of Features

Target Applications

Infineon D798N18T 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

D798N18T is an 1800 V / 800 A disc rectifier diode from Infineon Technologies (eupec). Source: manufacturer datasheet (detailed).

Parameter	Value
Manufacturer	Infineon Technologies (eupec)
Product type	Disc rectifier diode
Configuration	Single (press-pack disc)
Package	Case design T
Repetitive peak reverse voltage (VRRM)	800, 1200, 1400, 1800 V (series); 1800 V for D798N18
Non-repetitive peak reverse voltage (VRSM)	VRRM + 100 V
Mean forward current (IFAVM)	800 A (Tc = 130 °C); 1050 A (Tc = 106 °C)
RMS forward current (IFRMSM)	1650 A
Surge forward current (IFSM)	14.8 kA (tvj = 25 °C, tp = 10 ms); 11.8 kA (tvj max, tp = 10 ms)
I²t-value (I²t)	1095 kA²s (tvj = 25 °C, tp = 10 ms); 696 kA²s (tvj max)
On-state voltage (VT)	1.77 V max (tvj max, iF = 3.2 kA)
Thermal resistance (RthJC)	0.0415 °C/W max (two-sided, DC)
Max junction temperature (tvj max)	180 °C
Clamping force (F)	6...15 kN
Datasheet	Available on this page (PDF)

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