SMDA12C-5TB [SEMTECH]

Bidirectional TVS Array for Protection of Five Lines; 双向TVS阵列为保护五行


型号：	SMDA12C-5TB
厂家：	SEMTECH CORPORATION
描述：	Bidirectional TVS Array for Protection of Five Lines 双向TVS阵列为保护五行电视
文件：	总7页 (文件大小：163K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SMDA05C-5 THRU SMDA24C-5

Bidirectional TVS Array

for Protection of Five Lines

PROTECTION PRODUCTS

Features

Description

The SMDAxxC-5 series of transient voltage suppres-

sors are designed to protect components which are

connected to data and transmission lines from voltage

surges caused by ESD (electrostatic discharge), EFT

(electrical fast transients), and lightning.

u Transient protection for data lines to

IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact)

IEC 61000-4-4 (EFT) 40A (5/50ns)

IEC 61000-4-5 (Lightning) 12A (8/20µs)

u Small SO-8 surface mount package

u Protects five I/O lines

u Working voltages: 5V, 12V, 15V and 24V

u Low leakage current

u Low operating and clamping voltages

u Solid-state silicon avalanche technology

TVS diodes are characterized by their high surge

capability, low operating and clamping voltages, and

fast response time. This makes them ideal for use as

board level protection of sensitive semiconductor

components. The SMDAxxC-5 is designed to provide

transient suppression on multiple data lines and I/O

ports. The low profile SO-8 design allows the user to

protect up to five data and I/O lines with one package.

Mechanical Characteristics

u JEDEC SO-8 package

u Molding compound flammability rating: UL 94V-0

u Marking : Part number, date code, logo

u Packaging : Tube or Tape and Reel per EIA 481

The SMDAxxC-5 TVS diode array will meet the surge

requirements of IEC 61000-4-2 (Formerly IEC 801-2),

Level 4, Human Body Model for air and contact

discharge.

Applications

u RS-232 & RS-422 Data Lines

u Microprocessor Based Equipment

u LAN/WAN Equipment

u Notebooks, Desktops, & Servers

u Instrumentation

u Peripherals

u Set Top Box

u Serial and Parallel Ports

Schematic & PIN Configuration

SO-8 (Top View)

www.semtech.com

Revision 9/2000

SMDA05C-5 THRU SMDA24C-5

PROTECTION PRODUCTS

Absolute Maximum Rating

Rating

Peak Pulse Power (tp = 8/20µs)

Lead Soldering Temperature

Operating Temperature

Symbol

P_pk

Value

300

Units

Watts

°C

T_L

260 (10 sec.)

-55 to +125

-55 to +150

T_J

°C

Storage Temperature

T_STG

°C

Electrical Characteristics

SMDA05C-5

Parameter

Symbol

V_RWM

V_BR

I_R

Conditions

Minimum

Typical

Maximum

Units

Reverse Stand-Off Voltage

Reverse Breakdown Voltage

Reverse Leakage Current

Clamping Voltage

I_t= 1mA

V_RWM= 5V, T=25°C

I_PP= 1A, tp = 8/20µs

tp = 8/20µs

9.8

µA

V_C

Maximum Peak Pulse Current

Junction Capacitance

I_PP

C_j

Between I/O Pins and

Gnd

350

V_R= 0V, f = 1MHz

SMDA12C-5

Parameter

Symbol

V_RWM

V_BR

I_R

Conditions

Minimum

Typical

Maximum

Units

Reverse Stand-Off Voltage

Reverse Breakdown Voltage

Reverse Leakage Current

Clamping Voltage

I_t= 1mA

16.7

V_RWM= 12V, T=25°C

I_PP= 1A, tp = 8/20µs

tp = 8/20µs

µA

V_C

Maximum Peak Pulse Current

Junction Capacitance

I_PP

C_j

Between I/O Pins and

Gnd

120

V_R= 0V, f = 1MHz

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ã 2000 Semtech Corp.

SMDA05C-5 THRU SMDA24C-5

PROTECTION PRODUCTS

Electrical Characteristics

SMDA15C-5

Parameter

Symbol

V_RWM

V_BR

I_R

Conditions

Minimum

Typical

Maximum

Units

Reverse Stand-Off Voltage

Reverse Breakdown Voltage

Reverse Leakage Current

Clamping Voltage

I_t= 1mA

16.7

V_RWM= 15V, T=25°C

I_PP= 1A, tp = 8/20µs

tp = 8/20µs

µA

V_C

Maximum Peak Pulse Current

Junction Capacitance

I_PP

C_j

Between I/O Pins and

Gnd

V_R= 0V, f = 1MHz

SMDA24C-5

Parameter

Symbol

V_RWM

V_BR

I_R

Conditions

Minimum

Typical

Maximum

Units

Reverse Stand-Off Voltage

Reverse Breakdown Voltage

Reverse Leakage Current

Clamping Voltage

I_t= 1mA

26.7

V_RWM= 24V, T=25°C

I_PP= 1A, tp = 8/20µs

tp = 8/20µs

µA

V_C

Maximum Peak Pulse Current

Junction Capacitance

I_PP

C_j

Between I/O Pins and

Gnd

V_R= 0V, f = 1MHz

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ã 2000 Semtech Corp.

SMDA05C-5 THRU SMDA24C-5

PROTECTION PRODUCTS

Typical Characteristics

Non-Repetitive Peak Pulse Power vs. Pulse Time

Power Derating Curve

110

100

0.1

0.01

100

125

150

0.1

100

1000

Ambient Temperature - T_A(^oC)

Pulse Duration - tp (µs)

Pulse Waveform

110

100

Waveform

Parameters:

tr = 8µs

td = 20µs

e^-t

td = I_PP/2

Time (µs)

ESD Pulse Waveform (Per IEC 61000-4-2)

IEC 61000-4-2 Discharge Parameters

Level

First

Peak

Test

Peak

Current

Voltage

(Contact

Voltage

(Air

Current at 30 ns at 60 ns

Discharge) Discharge)

(A)

7.5

(A)

(kV)

22.5

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ã 2000 Semtech Corp.

SMDA05C-5 THRU SMDA24C-5

PROTECTION PRODUCTS

Applications Information

Device Connection for Protection of Five Data Lines

Circuit Diagram

The SMDAxxC-5 is designed to protect up to 5 data or

I/O lines. They are bidirectional devices and may be

used on lines where the signal polarities are above and

below ground.

The SMDAxxC-5 TVS arrays employ a monolithic struc-

ture. Therefore, the working voltage (V_RWM) and break-

down voltage (V_BR) specifications apply to the differen-

tial voltage between any two data line pins. For ex-

ample, the SMDA24C-5 is designed for a maximum

voltage excursion of +/-12V between any two data

lines.

The device is connected as follows:

Pins 1, 2, 3, 4, and 5 are connected to the lines

that are to be protected. Pin 8 is connected to

ground. The ground connections should be made

directly to the ground plane for best results. The

path length is kept as short as possible to reduce

the effects of parasitic inductance in the board

traces. Pins 6 and 7 are not connected.

Connection Diagram

DATA IN

DATA OUT

Circuit Board Layout Recommendations for Suppres-

sion of ESD.

Good circuit board layout is critical for the suppression

of ESD induced transients. The following guidelines are

recommended:

Place the TVS near the input terminals or connec-

tors to restrict transient coupling.

Minimize the path length between the TVS and the

protected line.

Minimize all conductive loops including power and

ground loops.

The ESD transient return path to ground should be

kept as short as possible.

DATA IN

DATA OUT

Never run critical signals near board edges.

Use ground planes whenever possible.

www.semtech.com

ã 2000 Semtech Corp.

SMDA05C-5 THRU SMDA24C-5

PROTECTION PRODUCTS

Outline Drawing - SO-8

Land Pattern - SO-8

www.semtech.com

ã 2000 Semtech Corp.

SMDA05C-5 THRU SMDA24C-5

PROTECTION PRODUCTS

Ordering Information

Working

Part Number

Qty per

Reel

Reel Size

Voltage

SMDA05C-5.TB

SMDA05C-5.TE

SMDA12C-5.TB

SMDA12C-5.TE

SMDA15C-5.TB

SMDA15C-5.TE

SMDA24C-5.TB

SMDA24C-5.TE

500

2,500

500

7 Inch

13 Inch

7 Inch

12V

15V

24V

2,500

500

13 Inch

7 Inch

2,500

500

13 Inch

7 Inch

2,500

13 Inch

Note:

(1) No suffix indicates tube pack.

Contact Information

Semtech Corporation

Protection Products Division

652 Mitchell Rd., Newbury Park, CA 91320

Phone: (805)498-2111 FAX (805)498-3804

www.semtech.com

ã 2000 Semtech Corp.

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