ESDAxxSC5 / ESDAxxSC6

5/7

Electrostatic discharge (ESD) is a major cause of

failure in electronic systems.

Transient Voltage Suppressors (TVS) are an ideal

choice for ESD protection. They are capable of

clamping the incoming transient overvoltage to a

low enough level such that damage to the

protected semiconductor is prevented.

Surface mount TVS arrays offer the best choice for

minimal lead inductance.

They serve as parallel protection elements,

connected between the signal line and ground. As

the transient rises above the operating voltage of

the device, the TVS array becomes a low

impedance path diverting the transient current to

ground.

ESD protection by ESDAXXXSCX

ESD

sensitive

device

GND

I/ O LINES

The ESDAxxSCx array is the ideal board level

protection

of

ESD

sensitive

semiconductor

components.

The tiny SOT23-5L and SOT23-6L packages allow

design flexibility in the high density boards where

the space saving is at a premium. This enables to

shorten the routing and contributes to hardening

against ESD.

ADVICE FOR OPTIMIZING CIRCUIT BOARD

LAYOUT

Circuit board layout is a critical design step in the

suppression of ESD induced transients. The

following guidelines are recommended :

n

The ESDAxxSC5/6 should be placed as close as

possible to the input terminals or connectors.

n

The path length between the ESD suppressor

and the protected line should be minimized

n

All conductive loops, including power and

ground loops should be minimized

n

The ESD transient return path to ground should

be kept as short as possible.

n

Ground planes should be used whenever possi-

ble.