Medium Voltage Thyristors
Medium voltage applications place additional demands on phase controlled thyristors. To meet these demands we have developed a comprehensive range of thyristors optimised for medium voltage applications. As voltages increase, so do switching losses and turn-off time to a point where they become significant in line frequency applications. Our patented distributed gate architecture ensures excellent switching performance over a wide range of voltage, current and di/dt. Device lifetime is also engineered to achieve an optimum balance between conduction losses, commutation losses and turn-off time to give maximum power handling from line frequency to 400Hz. This also gives significant benefits when series or parallel connection of devices is required. Medium voltage thyristors are available from 3.2kV up to 6.5kV with silicon diameters from 38mm to 100mm making them particularly suitable for high power converters such as medium voltage DC drives, medium voltage soft starts and utility applications such as HVDC, static VAr compensators, excitation and transfer switches.
We recognise the importance of reliability in these large, capital intensive applications and as a result we subject these parts to extended levels of both routine and type testing to ensure that your investment gives years of trouble free service.
Type VDRM ITAV ITSM I2t tq Typ. Reverse Recovery Charge VT0 rT TJM RthJK Fig. No.
 
     
VRRM TK=55°C 10ms ½ sine @ TJM, 50% Chord       180° 120°    
    VR £60% VRRM 200V/µs Qra @ITM @-di/dt @TJM   Sine Rect.    
Part No. Old Part No. V A A A2s µs µC A A/µs V mW °C K/W K/W    
K0349LC600 P201CH60 6000 349 4800 115 x 103 900-1200 900 1000 60 1.568 2.43 115 0.047 0.049 W10    
K0349LC650 P201CH65 6500 349 4800 115 x 103 900-1200 900 1000 60 1.568 2.43 115 0.047 0.049 W10    
K0769NC600 P410CH60 6000 769 8600 370 x 103 900-1200 2050 1000 10 1.566 1.17 115 0.024 0.029 W11    
K0769NC650 P410CH65 6500 769 8600 370 x 103 900-1200 2050 1000 10 1.566 1.17 115 0.024 0.029 W11 Figure W12 - 63mm - 1000g
K0890NC360 R295CH36 3600 890 10900 594×103 350-550 1500 1000 10 1.516 0.800 125 0.024 0.029 W11
 
K0890NC420 R295CH42 4200 890 10900 594×103 350-550 1500 1000 10 1.516 0.800 125 0.024 0.029 W11    
K1121NC320 P440CH32 3200 1121 15000 1.13 x 106 400-500 1000 1000 10 1.098 0.542 125 0.024 0.029 W11    
K1121NC360 P440CH36 3600 1121 15000 1.13 x 106 400-500 1000 1000 10 1.098 0.542 125 0.024 0.029 W11    
K1197NC300 P480CH30 3000 1197 10646 567 x 103 200-300 1400 1000 10 1.210 0.430 125 0.024 0.029 W11    
K1197NC320 P480CH32 3200 1197 10646 567 x 103 200-300 1400 1000 10 1.210 0.430 125 0.024 0.029 W11  
New> K1351VC600 N/A 6000 1351 14300 1.02×106 800-1500 4500 2000 10 1.410 0.600 115 0.013 0.014 W12 Figure W50 - 63mm - 750g
New> K1351VC650 N/A 6500 1351 14300 1.02×106 800-1500 4500 2000 10 1.410 0.600 115 0.013 0.014 W12
 
New> K1351VF600 N/A 6000 1351 14300 1.02×106 800-1500 4500 2000 10 1.410 0.600 115 0.013 0.014 W50  
New> K1351VF650 N/A 6500 1351 14300 1.02×106 800-1500 4500 2000 10 1.410 0.600 115 0.013 0.014 W50    
K1947ZC400 P855CH40 4000 1947 25000 3.13×106 600-700 3500 1000 10 1.221 0.425 125 0.011 0.012 W13    
K1947ZC450 P855CH45 4500 1947 25000 3.13×106 600-700 3500 1000 10 1.221 0.425 125 0.011 0.012 W13    
K1947ZD400 P855CH40 4000 1947 25000 3.13×106 600-700 3500 1000 10 1.221 0.425 125 0.011 0.012 W46    
K1947ZD450 P855CH45 4500 1947 25000 3.13×106 600-700 3500 1000 10 1.221 0.425 125 0.011 0.012 W46    
K2095ZC360 P880CH36 3600 2095 18200 1.66×106 400-500 2400 2000 10 1.502 0.296 125 0.011 0.012 W13    
K2095ZC420 P880CH42 4200 2095 18200 1.66×106 400-500 2400 2000 10 1.502 0.296 125 0.011 0.012 W13 Figure W13 - 73mm - 1700g
K2095ZD360 P880DH36 3600 2095 18200 1.66×106 400-500 2400 2000 10 1.502 0.296 125 0.011 0.012 W46
 
K2095ZD420 P880DH42 4200 2095 18200 1.66×106 400-500 2400 2000 10 1.502 0.296 125 0.011 0.012 W46