SKKH253-18E Semikron - Thyristor / Diode Module

SKKH253-18E Description

The Semikron SKKH253-18E is a thyristor module, rated for 1800 V and 420 A. It is used in phase-controlled rectifiers, soft starters, battery chargers and temperature controllers for furnaces and heaters. If you are repairing older equipment, we can usually find this exact part, including date codes that are no longer in production.

We help engineers and repair technicians find parts like the SKKH253-18E, 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

Semikron SKKH253-18E 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

SKKH253-18E is a 1,800 V, 253 A thyristor / diode module. Source: manufacturer datasheet (Semikron).

Parameter	Value
Product type	Thyristor / diode module
Repetitive peak reverse voltage (VRRM / VDRM)	1,800 V
Non-repetitive peak reverse voltage (VRSM)	1,900 V
Average on-state / forward current	253 A (sin. 180°, Tc = 85 °C)
RMS current, max. (continuous)	420 A
On-state / forward voltage, max. (Tvj = 25 °C)	1.7 V
Package	SEMIPACK 3
Weight	approx. 400 g
Datasheet	Available on this page (PDF)

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