Any changing of specification will not be informed individual

http://www.SeCoSGmbH.com

Elektronische Bauelemente

0. 01

0.1

1

10

0.1

1

10

100

1000

Pulse Duration - tp (us)

Non-Repetitive Peak Pulse Power vs. Pulse Time

SMD03 THRU SMD36

300W TVS DIODE

0

10

20

30

40

50

60

70

80

90

100

110

0

25

50

75

100

125

150

Power Derating Curve

0

10

20

30

40

50

60

70

80

90

100

110

0

5

10

15

20

25

30

Time (us)

e

-t

Wave form

Paramete rs:

tr = 8 s

td = 20 s

Pulse Waveform

Applications Information

Device Connection Options

The SM series is designed to protect one

unidirectional data or l/O lines operating at 5 to

36 volts.Connection options are as follows:

•

Unidirectional:Data lines are connected to pin1

and Pin 3 is connected to ground.For best

results,this pin should be connected directly to a

ground plane on the board.The path lengh should

be kept as short as possible to minimize parasitic

inductance.

Circuit Board Layout Recommendations for suppres-

sion of ESD.

Good circuit board layout is critical for the suppression

of fast rise-time transients such as ESD.The following

guidelines are recommended (Refer to application note

Sl99.01 for more detailed information):

•

Place the TVS near the input terminals or connec-

tors to restrict transient coupling.

•

Minimize the path length between the TVS and the

protected line.

•

Minimize all conductive loops including power and

ground loops.

•

The ESD transient return path toground should be

kept as short as possible.

•

Never run critical signals near board edges

•

Use ground planes whenever possib|e.

Number

1.4

4.0

mm

1.2

0.9

0.95

2.6

Suggested Solder Pad Layout

0.9

1.4

16-Oct.-2006 Rev. B

Page 2 of 2

16-Oct.-2008 Rev. D

Page 2 of 2