SKT551-18E Semikron - Thyristor / Diode Module

SKT551-18E Description

SKT551-18E is a capsule (press-pack) line thyristor from Semikron, rated 1800V, 550A. Typical applications: DC motor control, controlled rectifiers and AC controllers.

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Summary of Features

Target Applications

Semikron SKT551-18E is used for DC motor control, controlled rectifiers and AC controllers.

Key Specifications

SKT551-18E is a capsule (press-pack) line thyristor from Semikron, rated 1800V, 550A. Source: manufacturer datasheet.

Parameter	Value
Manufacturer	Semikron
Repetitive peak reverse / off-state voltage VRRM, VDRM	1800 V
Average on-state current ITAV	550 A (sin. 180, DSC, Tc = 85 °C)
Max. RMS on-state current ITRMS	1200 A
Surge current ITSM (25 °C, 10 ms)	9000 A
i²t (25 °C)	405 000 A²s
On-state voltage VT max. (25 °C)	1.65 V (IT = 1500 A)
Package	Capsule (press-pack), double sided cooling
Datasheet	Available on this page (PDF)

Note: data taken from the Semikron datasheet of SKT 551 series, which covers SKT551-18E.

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