Diode D053-7100

Welding diodes are mostly used in contact welding machines. Operation in welding machines is characterized by short impulses of current causing the semiconductor structure to heat and then cool down, as a result of limitations of welding machine duty cycle (modes “operation – cooling”). As a result, the semiconductor is exposed to frequent cyclical thermal and mechanical stress. All this imposes harsh requirements to static and dynamic properties of the devices.

Category:

D053-7100 is a welding diode in disc design. It has a repetitive peak reverse voltage VRRM of 200-400 V and low static losses. Mean forward current IFAV equals 7402 A. Industry standard design enables easy installation into existing equipment. Maximal junction temperature Tjmax is 150 °C. Diameter of the contact surface is 44.4 mm.

“D0” series of welding diodes by Nimatek Technology has the following features:
∙ ability to conduct high mean forward current, allowing to reduce the amount of parallel devices
∙ high resistance to electric and thermal cycling ensures a long service life;
∙ minimal static losses;
∙ high maximal junction temperature (Tjmax) allows these diodes to conduct higher current with the same cooling system;
∙ possibility of double-sided cooling;
∙ optimized for high current rectifiers;
∙ very low thermal resistance;
∙ designed for medium-frequency welding equipment.

At the customer’s request Nimatek Technology is able to select the optimal power diode for given operation modes. It is also possible to ship ready-to-use power semiconductors in assembly with heatsinks.

Additional information

VRRM [V min]

200

VRRM [V max]

400

IFAV [A]

7402

85

VFM (Tc=25°С) [V]

1.05

IFM (Tc=25°С) [A]

5000

Tjmax [°С]

170

Rthjc [°С/W]

0.0090

Design

disc

Type

welding