NUP2115L Ver la hoja de datos (PDF) - ON Semiconductor

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Fabricante

NUP2115L

ESD Protection Diode

ON Semiconductor 

NUP2115L, SZNUP2115L

APPLICATIONS

Surge protection diodes provide a low cost solution to

conducted and radiated Electromagnetic Interference (EMI)

and Electrostatic Discharge (ESD) noise problems. The

noise immunity level and reliability of FlexRay transceivers

can be easily increased by adding external surge protection

diodes to prevent transient voltage failures.

The NUP2115L provides a surge protection solution for

FlexRay data communication lines. The NUP2115L is a

dual bidirectional surge protection device in a compact

SOT−23 package. This device is based on Zener technology

that optimizes the active area of a PN junction to provide

robust protection against transient EMI surge voltage and

ESD.

Figure 7 provides an example of a dual bidirectional surge

protection diode array that can be used for protection with

the FlexRay network. The bidirectional array is created from

four identical Zener surge protection diodes. The clamping

voltage of the composite device is equal to the breakdown

voltage of the diode that is reversed biased, plus the diode

drop of the second diode that is forwarded biased.

Surge Protection Diode Protection Circuit

Surge protection diodes provide protection to a

transceiver by clamping a surge voltage to a safe level. surge

protection diodes have high impedance below and low

impedance above their breakdown voltage. A surge

protection Zener diode has its junction optimized to absorb

the high peak energy of a transient event, while a standard

Zener diode is designed and specified to clamp a

steady state voltage.

Figure 7. FlexRay Surge Protection Circuit

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