1.M for Module
2.Letter code for subtype of module (D: rectifier diode Z: fast recovery diode T: phase control thyristor
K: fast turn-off thyristor F: D+T H: Z+K U: ultra fast and soft recovery diode)
3.Circuit (A: common anode C: in series K: common cathode X: anti-parallel Q: single phase bridge
G: three phase common anode S: three phase bridge Y: three phase common cathode R: in paraller)
4.Average current
5.Class according to VDRM, VRRM
Remarks: this part is omitted usually.Its usage is as below: (TD), (DT),(KZ), (ZK) means the sequence ofdevices in thyristor/diode mixedmodules. (NA), (NK), (A), (K) meansthe bottom of non-isolated moduleis the anode and cathode of devices.(N) means the bottom plate ofmodules is common electrode. (AA)means modules are in compliancewith low-voltage standard.
Features
·Non-isolated, the bottom plate is common electrode
·Seal in compliance with international standard
·Pressure type, excellent temperature characteristics and power cycling capability
·Maximum junction temperature is up to 140°C
·High surge current
·Low forward voltage drop
Typicla applications
·Power supply of welding equipment
·Different kinds of DC power supply