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Document Number 88858

03-Dec-04

VISHAY

GSIB4A20 thru GSIB4A80

Vishay Semiconductors

Thermal Characteristics

Ratings at 25 °C ambient temperature unless otherwise specified.

Notes:

(1) Unit case mounted on Al plate heatsink.

(2) Units mounted on P.C.B. with 0.5 x 0.5" (12 x 12 mm) copper pads and 0.375" (9.5 mm) lead length

(3) Recommended mounting position is to bolt down on heatsink with silicone thermal compound for maximum heat transfer with #6 screw

Ratings and Characteristics Curves

Parameter

Symbol

GSIB4A20

GSIB4A40

GSIB4A60

GSIB4A80

Unit

Typical thermal resistance per leg

°C/W

Figure 1. Derating Curve Output Rectified Current

Figure 2. Maximum Non-Repetitive Peak Forward Surge Current

Per Leg

0

1

2

3

4

0

25

50

75

100

125

150

Temperature ( °C)

0

20

40

60

80

100

1

100

1.0 Cycle

Number of Cycles at 60 Hz

Figure 3. Typical Forward Characteristics Per Leg

Figure 4. Typical Reverse Characteristics Per Leg

Instantaneous Forward Voltage (V)

0.3

1.1

1.3

0.01

10

0.1

1

100

0.5

0.7

0.9

Tj = 125 °C

Tj = 150 °C

Tj=25 °C

Percent of Rated Peak Reverse Voltage (%)

1000.0

20

60

40

100

80

0.0

0.1

1.0

10.0

100.0

Tj = 150 °C

Tj = 125 °C

Tj=25 °C