IP4302CX2_A

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© NXP B.V. 2011. All rights reserved.

Product data sheet

Rev. 1 — 28 November 2011

4 of 10

NXP Semiconductors

IP4302CX2/A

Low profile bidirectional ESD protection diode

6.

Application information

The IP4302CX2/A is designed for the protection of one bidirectional data or signal line

from the damage caused by ESD. The device may be used on lines where the signal

polarities are both, positive and negative with respect to ground.

6.1 Printed-Circuit Board (PCB) layout and protection device placement

PCB layout is critical for the suppression of ESD and Electric Fast Transient (EFT).

The following guidelines are recommended:

1. Place the device as close as possible to the input terminal or connector

2. The path length between the device and the protected line should be minimized

3. Keep parallel signal paths to a minimum

4. Avoid running protected conductors in parallel with unprotected conductors

5. Minimize all PCB conductive loops including power and ground loops

6. Minimize the length of the transient return path to ground

7. Avoid using shared transient return paths to a common ground point

Fig 1.

V-I characteristics for a bidirectional ESD protection diode

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−

+

Fig 2.

Application diagram of IP4302CX2/A

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DUT

GND

line to be protected