KS621K40A41 Powerex - Bipolar Transistor Module

KS621K40A41 Description

Powerex KS621K40A41 is a Darlington transistor module rated at 850 V and 400 A. It was a workhorse in drives and power supplies before IGBTs took over, and it is still needed to repair that equipment.

USComponent (Young & New Century LLC) supplies power modules, thyristors, diodes and other industrial components, including legacy parts. Contact us for a quote on the KS621K40A41, and please confirm ratings against the datasheet before ordering.

Summary of Features

Target Applications

Powerex KS621K40A41 is used for AC Motor Control, DC Motor Control, Switching Power Supplies, Inverters.

Key Specifications

KS621K40A41 is a 1000 V / 400 A Darlington transistor module from Powerex. Source: manufacturer datasheet (detailed).

Parameter	Value
Manufacturer	Powerex
Product type	Darlington transistor module
Configuration	Single Darlington with reverse-parallel high-speed diode and base-emitter speed-up diode
Collector-emitter sustaining voltage (VCEV(sus))	1000 V (VBE = -2 V)
Collector-base voltage (VCBO)	1000 V
Continuous collector current (IC)	400 A
Diode surge current (IFSM)	3000 A
DC current gain (hFE)	70 min (IC = 400 A, VCE = 5.0 V)
Collector-emitter saturation voltage (VCE(sat))	2.5 V max (IC = 400 A, IB = 8 A)
Power dissipation (Pt)	1980 W (each transistor)
Isolation voltage (VRMS)	2500 V
Junction temperature (Tj)	-40 to 150 °C
Datasheet	Available on this page (PDF)

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