SM712 查看數據表（PDF） - Littelfuse, Inc

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SM712

600W Asymmetrical TVS Diode Array

Littelfuse, Inc 

TVS Diode Arrays (SPA® DDiiooddeess))

General Purpose ESD Protection - SM712

SM712 Series 600W Asymmetrical TVS Diode Array

RoHS Pb GREEN

Description

The SM712 TVS Diode Array is designed to protect RS-485

applications with asymmetrical working voltages (-7V to

12V) from damage due to electrostatic discharge (ESD),

electrical fast transients (EFT), and lightning induced surges.

The SM712 can absorb repetitive ESD strikes above the

maximum level specified in the IEC 61000-4-2 international

standard without performance degradation and safely

dissipate up to 19A of 8/20us induced surge current (IEC-

61000-4-5 2nd edition) with very low clamping voltages.

Pinout and Functional Block Diagram

2

1

12V

12V

7V

7V

3

Life Support Note:

Not Intended for Use in Life Support or Life Saving Applications

The products shown herein are not designed for use in life sustaining or life saving

applications unless otherwise expressly indicated.

Additional Information

Datasheet

Resources

Samples

Features

• RoHS compliant and

lead-free

• ESD, IEC 61000-4-2,

±30kV contact, ±30kV air

• EFT, IEC 61000-4-4, 50A

(5/50ns)

• Lightning, IEC 61000-

4-5 2nd edition, 19A

(tP=8/20μs)

• Working Voltages:

-7V to 12V

• Low clamping voltage

• Low leakage current

• AEC-Q101 Qualified

• Moisture Sensitivity

Level (MSL-1)

Applications

• RS-485

• Fieldbus

• Modbus

• Profibus

• DMX512

• Security Systems

• AutomatedT eller Machines

(ATMs)

• Lighting Control - DALI

• Communication

Equipments

RS-485 Application Example

RS-485 Port

Receiver

A

B

IC

SM712

GND

© 2017 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: 10/09/17

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