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Published 01/21/2020

Diodes can be subdivided into two main classes: Rectifier diodes (standard recovery) and fast diodes. Rectifier diodes are generally used for conversion of AC (alternating current) to DC (direct current). While optimized for low conduction losses, Rectifier diodes withstand only moderate dynamic stress in transition from conducting to the blocking state.

Fast diodes, on the other hand, are companion devices to switches in DC to AC conversion. Every switch (GTO, IGCT or IGBT) requires a complementary diode (e.g. for "free-wheeling" reactive power) in order to enable operation of the DC-AC conversion system with inductive loads.

Fast diodes are optimized to accept high dynamic stress (fast transition from conducting to blocking state). However, they generally have higher conduction losses than rectifier diodes. For every switch family (GTO, IGCT and IGBT), we offer fast diodes that are optimized for the switch application.

Click on part number for Data Sheet

GTO free-wheeling

Part number VRRM (V) IFAVM (A) IFSM (kA) VDC (V) Package* (mm)
5SDF 13H4501 4500 1200 25.0 2800 94/63
5SDF 10H6004 6000 1100 18.0 3800 94/63

 IGBT diodes

Part number VRRM (V) IFAVM (A) IFSM (kA) Qrr(µC) Package* (mm)
5SDF 20L4521 4500 1950 38 5300 120/85
5SDF 28L4521 4500 2620 48 10100 120/85

Diodes for IGCT Applications 

Part Number

VRRM (V) IFAVM (A) IFSM (kA) VDC (V) Package* (mm)
5SDF 03D4502 4500  275 5.0  2800  60/34 
5SDF 05F4502 4500  435 16.0  2800  75/47 
5SDF 10H4503  4500  1100 20.0  2800  94/63 
5SDF 20L4520   4500  1950 38  2800  120/85 
5SDF 28L4520   4500  2620 48  2800  120/85 
5SDF 02D6004 5500 175  3.0  3300  60/34 
5SDF 04F6004 5500  380  10.0  3300  75/47 
5SDF 08H6005 5500 585 18.0 3300 94/63

Darrah Electric is a Value Added Reseller of ABB Semiconductors.

We offer full product and application support with extended warranty options.

Click here to see our inventory or contact us for samples, lead times and/or pricing at (216) 631-0912.