ESDA14V2L datasheet(3/6 Pages) STMICROELECTRONICS

No. de pieza	ESDA14V2L

Descripción Electrónicos	DUAL TRANSIL ARRAY FOR ESD PROTECTION

PDF	6 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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ESDAxxL

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The ESDA family has been designed to clamp fast

spikes like ESD. Generally the PCB designers

need to calculate easily the clamping voltage VCL.

This is why we give the dynamic resistance in

addition to the classical parameters. The voltage

across the protection cell can be calculated with

the following formula:

VCL =VBR +RdIPP

Where Ipp is the peak current through the ESDA cell.

DYNAMIC RESISTANCE MEASUREMENT

The short duration of the ESD has led us to prefer

a more adapted test wave, as below defined, to the

classical 8/20

µs and 10/1000µs surges.

2.5

µs duration measurement wave.

As the value of the dynamic resistance remains

stable for a surge duration lower than 20

µs, the

2.5

µs rectangular surge is well adapted. In

addition both rise and fall times are optimized to

avoid any parasitic phenomenon during the

measurement of Rd.

CALCULATION OF THE CLAMPING VOLTAGE

USE OF THE DYNAMIC RESISTANCE

2µs

tp = 2.5µs

Ipp

ESDA14V2L Datasheet(PDF) 3 Page - STMicroelectronics