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PDF ESDA25LY Data sheet ( Hoja de datos )
| Número de pieza | ESDA25LY | |
| Descripción | TVS Clamping Arrays | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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ESDA25LY
Automotive dual Transil™ array for ESD protection
Features
■ 2 Unidirectional Transil functions
■ Low leakage current: 1 µA @ 24 V
■ 300 W peak pulse power (8/20 µs)
Benefits
■ High ESD protection level: up to 25 kV
■ High integration
■ Suitable for high density boards
Complies with the following standards
■ IEC 61000-4-2 level 4
– 15 kV (air discharge)
– 8 kV (contact discharge)
■ MIL STD 883G - Method 3015-7 Class 3B
– (human body model)
Applications
Where transient overvoltage protection in ESD
sensitive equipment is required, such as :
■ Computers
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■ Printers
■ Communication systems and cellular phones
It is particulary recommended for the RS232 I/O
port protection where the line interface withstands
only with 2 kV ESD surges.
3
2
1
SOT23-3L
Figure 1. Functional diagram
1
3
2
Description
The ESDA25LY is a dual monolithic voltage
suppressor designed to protect components
which are connected to data and transmission
lines against ESD.
It clamps the voltage just above the logic level
supply for positive transients, and to a diode drop
below ground for negative transients.
It can also work as bidirectionnal suppressor by
connecting only pin1 and 2.
February 2010
TM: Transil is a trademark of STMicroelectronics.
A.S.D.™= Application Specific Discretes
Doc ID 16914 Rev 1
1/10
www.st.com
10
1 page  
ESDA25LY
4 ESD Protection by ESDA25LY
ESD Protection by ESDA25LY
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 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 to 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.
The ESDA25LY array is the ideal board level protection of ESD sensitive semiconductor
components.
The tiny SOT23 package allows design flexibility in the design of high density boards where
the space saving is at a premium. This enables to shorten the routing and contributes to
hardening againt ESD.
Figure 10. ESD protection diagram
I/O
I/O
I/O
I/O
ESD
sensitive
device
www.DataSheet4U.com
2 * ESDA25LY
GND
Doc ID 16914 Rev 1
5/10
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet ESDA25LY.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ESDA25L | DUAL TRANSIL ARRAY FOR ESD PROTECTION | STMicroelectronics |
| ESDA25LY | TVS Clamping Arrays | STMicroelectronics |
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