MMBZXVCL_MMBZXVDL_SER_1

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 01 — 3 September 2008

10 of 15

NXP Semiconductors

MMBZxVCL; MMBZxVDL series

Double ESD protection diodes for transient overvoltage suppression

8.

Application information

The MMBZxVCL series and the MMBZxVDL series are designed for the protection of up

to two unidirectional data or signal lines from the damage caused by ESD and surge

pulses. The devices may be used on lines where the signal polarities are either positive or

negative with respect to ground. The devices provide a surge capability of 40 W per line

for a 10/1000

µs waveform.

Circuit board layout and protection device placement

Circuit board layout is critical for the suppression of ESD, Electrical Fast Transient (EFT)

and surge transients. The following guidelines are recommended:

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

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 Printed-Circuit Board (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.

8. Ground planes should be used whenever possible. For multilayer PCBs, use ground

vias.

9.

Test information

9.1 Quality information

This product has been qualified in accordance with the Automotive Electronics Council

(AEC) standard

Q101 - Stress test qualification for discrete semiconductors, and is

suitable for use in automotive applications.

Fig 9.

Typical application: ESD and transient voltage protection of data lines

006aab330

MMBZxVCL/VDL

line 1 to be protected

unidirectional protection

of two lines

bidirectional protection

of one line

line 2 to be protected

GND

MMBZxVCL/VDL

line 1 to be protected

GND