1N5817, 1N5818, 1N5819

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5

100

70

5.0

30

20

10

7.0

5.0

3.0

20

7.0

10

3.0

2.0

30

1.0

40

15

5.0

3.0

2.0

0.3

0.2

0.1

40

36

12

30

20

1.0

0.5

0.05

0.03

24

16

20

8.0

4.0

28

032

10

20

7.0

5.0

2.0

0.2

0.3

0.5

0.7

1.0

3.0

0.9

1.0 1.1

0.1

0.07

0.05

0.03

0.02

0.6

0.5

0.4

0.3

0.2

0.7

0.1

0.8

NOTE 5. — THERMAL CIRCUIT MODEL

(For heat conduction through the leads)

Figure 7. Typical Forward Voltage

NUMBER OF CYCLES

Figure 8. Maximum Non−Repetitive Surge Current

Figure 9. Typical Reverse Current

25°C

1 Cycle

f = 60 Hz

Surge Applied at

Rated Load Conditions

1N5817

1N5818

1N5819

100°C

25°C

Use of the above model permits junction to lead thermal re-

sistance for any mounting configuration to be found. For a

given total lead length, lowest values occur when one side of

the rectifier is brought as close as possible to the heatsink.

Terms in the model signify:

(Subscripts A and K refer to anode and cathode sides, re-

spectively.) Values for thermal resistance components are:

75°C