SMF20AT1G datasheet(4/6 Pages) ONSEMI

Part #	SMF20AT1G

Description	200 W Transient Voltage Suppressor

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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SMF5.0AT1G Series, SZSMF5.0AT1G Series

http://onsemi.com

4

tP, PULSE WIDTH (ms)

100

1000

10,000

1.0

10

100

10

0

123

4

0

50

100

t, TIME (ms)

HALF VALUE − IRSM

2

PEAK VALUE − IRSM

tr

TYPICAL PROTECTION CIRCUIT

Vin

VL

Zin

LOAD

tP

PULSE WIDTH (tP) IS DEFINED

AS THAT POINT WHERE THE PEAK

CURRENT DECAYS TO 50%

OF IRSM.

Figure 1. Pulse Rating Curve

Figure 2. 10 X 1000 ms Pulse Waveform

1000

10,000

Figure 3. 8 X 20 ms Pulse Waveform

tr ≤ 10 ms

100

80

60

40

20

0

25

50

75

100

125

150

TA, AMBIENT TEMPERATURE (°C)

120

140

160

Figure 4. Pulse Derating Curve

100

90

80

70

60

50

40

30

20

10

0

020

40

60

80

t, TIME (ms)

tP

tr

PULSE WIDTH (tP) IS DEFINED

AS THAT POINT WHERE THE

PEAK CURRENT DECAY = 8

ms

PEAK VALUE IRSM @ 8 ms

HALF VALUE IRSM/2 @ 20 ms

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SMF20AT1G Datasheet(PDF) 4 Page - ON Semiconductor

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