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    Fast Recovery DiodesFast Recovery Diodes
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Fast Recovery Diodes

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.


Type VRRM IFAV) trr Qrr IFSM I2t IRRM VFM/IFM VFO rF Rth(j-hs) Tjm Mounting
Force 		Outline
  55°C 40A/μs 
25%Chord 		10 ms 150 oC        
  V A µs µc KA KA2s mA V/A V mΩ °C/W °C KN  
G24ZKB 200-1200 535 2.0 56 6.2 192 16 1.43/600 0.98 0.75 0.090 150 3.3-5.5 19/42/13.8
G30ZKB 400-1000 883 3.0 41 10 500 30 1.70/1500 1.13 0.38 0.055 150 5.3-10 25/42/14.6
G38ZKB 200-1200 1389 3.0 150 16 1280 40 1.53/1400 1.15 0.27 0.033 150 10-20 34/58.5/26.5
G24ZKC 1200-2000 531 2.0 120 6.2 192 16 1.54/700 1.02 0.74 0.090 150 3.3-5.5 19/42/13.8
G30ZKC 1200-2000 737 3.0 120 8.6 370 30 1.52/700 1.0 0.74 0.055 150 5.3-10 25/42/14.6
G38ZKC 1200-2000 1268 3.0 248 14 980 40 1.70/1400 1.24 0.33 0.033 150 10-20 34/58.5/26.5
G50ZKC 1200-2000 2017 4.0 225 24 2880 80 1.69/3000 1.0 0.23 0.022 150 19-26 47/74/26.9
G50ZKB 200-1000 2245 4.0 225 26 3380 80 1.47/3000 0.93 0.18 0.022 150 19-26 47/74/26.9
G76ZKC 1100-2000 3923 6.0 1000 45 10125 200 1.58/4000 1.14 0.11 0.011 150 35-47 73/110/27.2
G38ZKE 2000-3000 1195 3.0 338 12 720 40 1.90/1400 1.44 0.33 0.033 150 10-20 34/58.5/26.5
G76ZKE 2000-3000 3770 6.0 1300 44 9700 200 1.72/4500 1.19 0.118 0.011 150 35-47 73/110/27.2

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