Welding Machine

Power Electronics Devices Of Resistance Welder

zw13500_2
Runau welder diode ZW 5
Welder assembly unit 3 RUNAU
Welder assembly unit 1 RUNAU

Resistance welding is to press the work piece to be welded between the two electrodes by high current penetrated. It’s a method that the resistance heat generated by the current flowing through the work piece contact surface and the adjacent area is used to heat it to molten or plastic state to bond the metal. The main resistance welding is in the form of spot welding, seam welding, projection welding and butt welding.

The development of modern industries such as automotives, vessels, planes, and high-speed railways, require the medium and high frequency ultra-high current resistance welding machines and the ultra-high current diode work as the vital component is extremely required.

With constant innovation and strong research ability, Runau Electronics had developed the ultra-high current diode featured in optimized high current density, very low on-state voltage and very low thermal resistance which can parallel connect directly, thin silicon wafer, low threshold voltage, small slope resistance, high junction temperature, gold or platinum diffusion combined with electron irradiation to control minority life, apply low anode concentration and dual-bases zone technology to achieve the purpose of high frequency soft and fast recovery. The diode packaged in housed and housing-less. The ultra-high current welding diode can be adopted in resistance welder with frequency from 1KHz to 5 KHz.

Ultra-High Current Welding Diode List

TYPE

IF(AV)

TC

VRRM

IFSM @TVJIM&10ms

I2t

VFM                        @IFM&TJ=25℃

Tjm

Rjc

F

m

CODE

A

V

A

A2s

V

A

℃/W

KN

Kg

Voltage up to 400V

ZW7100-**

7100

85

200~400

55000

1.5×107

1.05

5000

170

0.010

24

0.140

W1

ZW10500-**

10500

85

200~400

70000

2.4×107

1.01

5000

180

0.005

32

0.460

W2

ZW12000-**

12000

85

200~400

85000

3.6×107

0.99

5000

170

0.006

35

0.205

W3

ZW13500-**

13500

85

200~400

85000

3.6×107

0.97

5000

180

0.004

35

0.140

W4

ZW16000-**

16000

85

200~400

120000

7.2×107

0.92

5000

170

0.004

37

0.570

W5

ZW18000-**

18000

85

200~400

135000

9.1×107

0.90

5000

170

0.004

40

0.580

W5