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Diodes reduce switching losses for solar inverters, UPS, electric vehicles, and welding machines

Thu, 05/30/2013 - 11:01am

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Vishay Intertechnology released 11 new Gen2 650 V FRED Pt Ultrafast diodes. The "H" family of bare die devices, suitable for applications working above 40 kHz, combine extremely fast and soft recovery time with low forward voltage drop and reverse leakage current to reduce switching losses in solar inverters, UPS, electric vehicles and hybrid electric vehicles, welding machines, servers, and continuous conduction mode power factor correction (CCM PFC). The "U" series, available on request for applications up to 40 KHz, offers a much lower forward voltage drop to optimize conduction losses.

The Vishay Semiconductors Ultrafast diodes released today are offered with a wide range of rated currents from 2 A to 150 A. The high blocking voltage capability of the devices allows designers to provide additional safety margins and increase power density in end products. Equivalent packaged devices are available on request.

To maximize efficiency, the diodes are offered with a wide range of forward voltage vs. reverse recovery time ratios. The devices feature typical reverse recovery times down to 28 ns at +25 °C (di/dt = 200 A/µs) and forward voltage down to 1.38 V typical. For a more robust and cost-effective design, the diodes offer a maximum operating junction temperature of +175 °C.

Device Specification Table:

Part number

Die size (mils)

Current rating (A)

Voltage (V)

VF @ rated I(1) (V)

Typ trr(2) (ns)

Equivalent packaged device available on request

 
 

VS-FD056H07A6BN

56 x 56

2

650

1.25

38

D-Pak

 

VS-FD072H07A6BN

72 x 72

6

650

1.7

30

D-Pak, TO-220

 

VS-FD083H07A6BN

83 x 83

8

650

1.7

30

D-Pak / D2-Pak / TO-220

 

VS-FD111H07A6BN

111 x 111

15

650

1.68

37

D-Pak / D2-Pak / TO-220

 

VS-FD117H07A6BN

117 x 117

18

650

1.52

37

D2-Pak / TO-220

 

VS-FD145H07A6BN

145 x 145

30

650

1.7

39

D2-Pak / TO-220

 

VS-FD157H07A6BN

157 x 157

35

650

1.7

41

TO-247

 

VS-FD184H07A6BN

184 x 184

60

650

1.7

42

TO-247

 

VS-FD197H07A6BN

197 x 197

70

650

1.65

47

TO-247

 

VS-FD310H07A6BN

310 x 190

100

650

1.75

54

Powertab

 

VS-FD394H07A6BN

394 x 217

150

650

2.2

60

n.a.

 

(1) = typ value at 25 °C
(2)
= typ at 25 °C, 1 A, di/dt = 100A/us

 

 

Samples and production quantities of the new FRED Pt Ultrafast diodes are available now, with lead times of 12 weeks for larger orders. Pricing for U.S. delivery starts at $0.50.

www.vishay.com

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