SMD15 datasheet(2/2 Pages) SECOS

2 / 2 page

Any changing of specification will not be informed individual

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Elektronische Bauelemente

0. 01

0.1

100

1000

Pulse Duration - tp (us)

Non-Repetitive Peak Pulse Power vs. Pulse Time

SMD03 THRU SMD36

300W TVS DIODE

100

110

100

125

150

Ambient Temperature - TA (oC)

Power Derating Curve

100

110

Time (us)

-t

td = IPP /2

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

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

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