Technical information

DALC208

6/14

Important

A precaution to take is to put the protection device as close as possible to the disturbance

source (generally the connector).

Note:

The measurements have been done with the DALC208SC6 in open circuit.

Figure 9.

ESD behavior: optimized layout and

add of a capacitance of 100 nF

Figure 10.

ESD behavior: measurement

conditions (with coupling

capacitance)

REF1=GND

VI/O

ESD

SURGE

I/O

REF2=+Vcc

C=100nF

Lw

Vcl+ = Vcc+Vf

-Vf

surge >0

surge <0

Vcl- =

t

Vcl+

POSITIVE

SURGE

t

Vcl-

NEGATIVE

SURGE

+5V

TEST BOARD

DALC

208

ESD

SURGE

Figure 11.

Remaining voltage after the

DALC208SC6 during positive ESD

surge

Figure 12.

Remaining voltage after the

DALC208SC6 during negative ESD

surge

IEC61000-4-2

Air Discharge

(150pF/330

Ω)

Vpp=15kV

IEC61000-4-2

Air Discharge

(150pF/330

Ω)

Vpp=15kV