SM712 Windforce SOT-23 2路双向常规ESD

SM712

Asymmetrical TVS Diode for Extended Common-Mode RS-485

SM712 replaces four discrete components by integrating two 12V and two 7V TVS diodes in a single package. The integrated design aids in reducing voltage over-shoot associated with trace inductance. The low clamping voltage of the SM712 minimizes the stress on the protected transceiver. The SM712 transient voltage suppressor (TVS) diode is designed for asymmetrical (12V to -7V) protection in multi-point data transmission standard RS-485 applications Features

Peak Power Dissipation ? 400 W (8 x 20 us Waveform)

Small package for use in portable electronics ESD protects two +12V to -7V lines Low leakage current Low clamping voltage Response Time is < 1 ns ESD protection of two lines

Solid-state silicon avalanche technology Device Meets MSL 1 Requirements

ROHS compliant

Main applications

Data lines

Industrial Controls Computers and peripherals Portable instrumentation Peripherals

Protection of RS-485 transceivers with extended common-mode range Security systems

Automatic Teller Machines HFC systems

Networks

Protection solution to meet

IEC61000-4-2 (ESD) ±30kV (air), ±30kV (contact)

IEC61000-4-4 (EFT) 40A (5/50ns)

SOT23

Maximum ratings (Tamb=25℃ Unless Otherwise Specified)

Rating Symbol Value Unit

Peak Pulse Power (tp=8/20μs waveform) P PK 400 Watts ESD Rating per IEC61000-4-2（Contact ） ESD Rating per IEC61000-4-2（Air ） V ESD 30 30 KV Lead Soldering Temperature TL 260 (10 sec.) ℃ Operating Temperature Range TJ -55 ~ 150 ℃ Storage Temperature Range

TSTG

-55 ~ 150

℃

Attention: Stresses above the max. values listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Maximum ratings are absolute ratings; exceeding only one of these values may cause irreversible damage to the integrated circuit.

Electrical Characteristics at TA = 25 °C, unless otherwise specified

Electrical characteristics ( Tamb=25℃ Unless Otherwise Specified)

Symbol

Parameter Conditions

Pins 1 to 3 and 2 to 3 (12V TVS) Pins 3 to 1 and 3 to 2

(7V TVS) Units

Min.

Typ.

Max.

Min. Typ. Max.

V RWM Reverse Working

Voltage Pin 3 to 1 or Pin 2 to 1

12 7 V V BR Reverse Breakdown Voltage I T = 1mA,

13.3

7.5

V

I R

Reverse Leakage

Current

V R = V RWM

1 20 μA V C Clamping Voltage

I PP = 1A, tp =8/20μs, 18 10 V

I PP = 12A, tp =8/20μs, 28 15 V C J

Junction Capacitance

V R = 0V, f = 1MHz,

50

65

50

65

pF

Typical Characteristics at TA = 25 °C, unless otherwise specified

Figure 4-1 Pulse Waveform

Figure 4-2 Non-Repetitive Peak Pulse Power vs. Pulse Time

Figure 4-3 Power Derating Curve

Figure 4-4Junction Capacitance vs. Reverse Voltage

Application Information

Zz

SOT-23

This is a molded SOT-23 package with lead free 100 % Sn plating on the lead frame. It has a flammability rating of UL 94V-0.

DIM Millimeters

Min Max

A 0.90 1.150

A1 0.000 0.100 B 0.300 0.500 C 0.080 0.100 D 2.820 3.020

E 1.200

1.400 E1

2.25

2.550

F 0.550(BSC)

L 0.300 0.500 Mechanical Data

A1

Packaging

Item Symbol SOT-23

Carrier Width A0 3.10±0.10

Carrier Length B0 2.70±0.10

Carrier Depth K0 1.15±0.10

Sprocket Hole D0 1.50±0.05

Feed Hole Diameter R0 13±0.20 Reel Outside Diameter R1 178

Reel Inner Diameter

R2 50 MIN

Sprocket Hole Position E 1.75±0.10

Punch Hole Position F 3.50±0.05

Punch Hole Pitch P1 4.00±0.10

Sprocket Hole Pitch P0 4.00±0.10

Embossment Center P2 2.00±0.05

Overall Tape Thickness T 0.20

Tape Width W 8±0.20 Reel Width W1 14.4 MAX

Quantity per Reel

3000

DIMENSIONS =MILLIMETERS The LEADER is a minimum of 20components in length and it consists of empty cavities with sealed cover tape The TRAILER is a minimum of 20 components in length and it consists of empty cavities with sealed cover tape.

Revision 1.1, 2012-05-15

Published by

Windforce Technology

201600 Shanghai, China

? 2012 Windforce Technology

All Rights Reserved.

Attention please!

The information herein is given to describe certain components and shall not be considered as warranted characteristics.

Terms of delivery and rights to technical change reserved.

We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein.

Information

For further information on technology, delivery terms and conditions and prices please contact your nearest Windforce Technology.

Warnings

Due to technical requirements components may contain dangerous substances.

For information on the types in question please contact your nearest Windforce Technologies Office.

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Published by Windforce Technology