Document Number: 93529

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Revision: 19-Jun-08

5

85HF(R) Series

Standard Recovery Diodes,

(Stud Version), 85 A

Vishay High Power Products

Fig. 8 - Forward Power Loss Characteristics

Fig. 9 - Maximum Non-Repetitive Surge Current

Fig. 10 - Maximum Non-Repetitive Surge Current

Fig. 11 - Forward Voltage Drop Characteristics

(up to 1200 V)

Fig. 12 - Forward Voltage Drop Characteristics

(for 1400 V, 1600 V)

Average Forward Current (A)

Maximum Allowable Ambient Temperature (°C)

0

25

50

75

100

125

150

1.5

K/W

2 K/

W

3 K/W

5 K/W

10 K/W

0.7

K/

W

1 K/

W

0

20

40

60

80

100

120

140

0

204060

80

100 120 140

DC

180˚

120˚

90˚

60˚

30˚

RMS Limit

Conduction Period

85HF(R) Series

(1400V, 1600V)

Tj = 150˚C

Number Of Equal Amplitude Half Cycle Current Pulses (N)

400

600

800

1000

1200

1400

1600

110

100

85HF(R) Series

Initial Tj = Tj Max.

@ 60 Hz 0.0083 s

@ 50 Hz 0.0100 s

At Any Rated Load Condition And With

Rated Vrrm Applied Following Surge.

Pulse Train Duration (s)

200

400

600

800

1000

1200

1400

1600

1800

0.01

0.1

1

Maximum Non Repetitive Surge Current

85HF(R) Series

Initial Tj = Tj Max.

No Voltage Reapplied

Rated Vrrm Reapplied

Versus Pulse Train Duration.

Instantaneous Forward Voltage (V)

10

100

1000

10000

01

2

3

4

5

6

Tj = 25˚C

Tj = Tj Max.

85HF(R) Series

up to 1200V

1

10

100

1000

0

0.5

1

1.5

2

2.5

Tj = 25˚C

Tj = Tj Max

85HF (R) Series

Instantaneous Forward Voltage (V)