SL24TC [SEMTECH]

Low Capacitance TVS Diode For High Speed Data Interfaces; 低电容TVS二极管用于高速数据接口


型号：	SL24TC
厂家：	SEMTECH CORPORATION
描述：	Low Capacitance TVS Diode For High Speed Data Interfaces 低电容TVS二极管用于高速数据接口二极管电视
文件：	总7页 (文件大小：168K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SL05 THRU SL24

Low Capacitance TVS Diode

For High Speed Data Interfaces

PROTECTION PRODUCTS

Features

Description

The SL series of TVS arrays are designed to protect

sensitive electronics from damage or latch-up due to

ESD, lightning, and other voltage-induced transient

events. They are available with operating voltages of

5V, 12V, 15V and 24V.

u Transient protection for high-speed 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 package for use in portable electronics

u Two devices will protect one line

u Low capacitance for high-speed data lines

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

u Solid-state silicon avalanche technology

TVS diodes are solid-state devices designed specifically

for transient suppression. They offer desirable charac-

teristics for board level protection including fast re-

sponse time, low operating and clamping voltage and

no device degradation. The SL series devices feature

a low capacitance, fast switching compensation diode

in series with a standard TVS diode. This effectively

reduces the overall capacitance of the device to less

than 5pF making it an integrated, low capacitance

solution for use on high-speed interfaces.

Mechanical Characteristics

u JEDEC SOT23 package

u Molding compound flammability rating: UL 94V-0

u Marking : Marking Code

u Packaging : Tape and Reel per EIA 481

The SL series devices may be used to meet the immu-

nity requirements of IEC 61000-4-2, level 4.

Applications

u High-Speed data lines

u Cellular handsets & accessories

u Universal Serial Bus (USB) port protection

u Portable instrumentation

u LAN/WAN equipment

u Peripherals

Circuit Diagram

Schematic & PIN Configuration

(N.C.)

SOT23 Top View

www.semtech.com

Revision 9/2000

SL05 THRU SL24

PROTECTION PRODUCTS

Absolute Maximum Rating

Rating

Peak Pulse Power (tp = 8/20µs)

ESD Voltage (HBM per IEC 61000-4-2)

Lead Soldering Temperature

Operating Temperature

Symbol

P_pk

Value

300

Units

Watts

I_PP

>25

T_L

260 (10 sec.)

-55 to +125

-55 to +150

°C

T_J

°C

Storage Temperature

T_STG

°C

Electrical Characteristics

SL05

Parameter

Reverse Stand-Off Voltage

Reverse Breakdown Voltage

Reverse Leakage Current

Clamping Voltage

Symbol

Conditions

Minimum

Typical

Maximum

Units

V_RWM

V_BR

I_R

I_t= 1mA

V_RWM= 5V, T=25°C

µA

V_C

I_PP= 1A,

9.8

tp = 8/20µs

Clamping Voltage

V_C

I_PP= 5A,

tp = 8/20µs

Maximum Peak Pulse Current

Junction Capacitance

I_pp

C_j

tp = 8/20µs

Pin 1 to 2

V_R= 0V, f = 1MHz

SL12

Parameter

Reverse Stand-Off Voltage

Reverse Breakdown Voltage

Reverse Leakage Current

Clamping Voltage

Symbol

V_RWM

V_BR

Conditions

Minimum

Typical

Maximum

Units

I_t= 1mA

13.3

I_R

V_RWM= 12V, T=25°C

µA

V_C

I_PP= 1A,

tp = 8/20µs

Clamping Voltage

V_C

I_PP= 5A,

tp = 8/20µs

Maximum Peak Pulse Current

Junction Capacitance

I_pp

C_j

tp = 8/20µs

Pin 1 to 2

V_R= 0V, f = 1MHz

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ã 2000 Semtech Corp.

SL05 THRU SL24

PROTECTION PRODUCTS

Electrical Characteristics (Continued)

SL15

Parameter

Reverse Stand-Off Voltage

Reverse Breakdown Voltage

Reverse Leakage Current

Clamping Voltage

Symbol

V_RWM

V_BR

Conditions

Minimum

Typical

Maximum

Units

I_t= 1mA

16.7

I_R

V_RWM= 15V, T=25°C

µA

V_C

I_PP= 1A,

tp = 8/20µs

Clamping Voltage

V_C

I_PP= 5A,

tp = 8/20µs

Maximum Peak Pulse Current

Junction Capacitance

I_pp

C_j

tp = 8/20µs

Pin 1 to 2

V_R= 0V, f = 1MHz

SL24

Parameter

Reverse Stand-Off Voltage

Reverse Breakdown Voltage

Reverse Leakage Current

Clamping Voltage

Symbol

V_RWM

V_BR

Conditions

Minimum

Typical

Maximum

Units

I_t= 1mA

26.7

I_R

V_RWM= 24V, T=25°C

µA

V_C

I_PP= 1A,

tp = 8/20µs

Clamping Voltage

V_C

I_PP= 5A,

tp = 8/20µs

Maximum Peak Pulse Current

Junction Capacitance

I_pp

C_j

tp = 8/20µs

Pin 1 to 2

V_R= 0V, f = 1MHz

www.semtech.com

ã 2000 Semtech Corp.

SL05 THRU SL24

PROTECTION PRODUCTS

Typical Characteristics

Non-Repetitive Peak Pulse Power vs. Pulse Time

Power Derating Curve

110

100

0.1

0.01

100

125

150

Ambient Temperature - T_A(^oC)

0.1

100

1000

Pulse Duration - tp ( s)

Pulse Waveform

110

Waveform

Parameters:

tr = 8µs

td = 20µs

100

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

www.semtech.com

ã 2000 Semtech Corp.

SL05 THRU SL24

PROTECTION PRODUCTS

Applications Information

Device Connection for Protection of One High-Speed

Data Line

SL Connection Options

The SL series devices are designed to protect high-

speed data lines. The SLxx utilizes a low capacitance

compensation diode in series with, but in opposite

polarity to a TVS diode in each line to achieve an

effective capacitance of less than 5pF per device.

During a transient event, the internal rectifier must be

forward biased (TVS is reversed biased). Therefore,

each device will only suppress transient events in one

polarity. To achieve protection in both positive and

negative polarity, a second device is connected in anti-

parallel to the first. On unidirectional lines, a fast

switching steering diode may be used as an alternative

to using two SL devices.

Two Devices : Bidirectional or

Unidirectional Line

The options for connecting the devices are as follows:

Low capacitance protection of one high-speed

line: Protection of one unidirectional or bidirec-

tional high-speed line is achieved by connecting two

devices in anti-parallel. Pin 1 of the first device is

connected to the line and pin 2 is connected to

ground (or to a second line for differential protec-

tion). Pin 2 of the second device is connected to

line 1 and pin 1 is connected to ground (or line 2)

as shown. Pin 3 is not connected. During positive

duration transients, the first device will conduct

from pin 1 to 2. The steering diode conducts in the

forward direction while the TVS will avalanche and

conduct in the reverse direction. During negative

transients, the second device will conduct in the

same manner. For optimum protection, 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. The path length

between the TVS and the protected line should

also be minimized.

One Devices with Steering Diode :

Unidirectional Line Only

I/O Line Protection

Connection Option for Unidirectional Lines Only:

An optional method for protecting unidirectional

(normal signal polarities above ground) lines is to

add a fast switching steering diode in parallel to the

SL TVS. Input/outputs are connected to pin 1 of

the SL device and the cathode of the rectifier. The

anode of the diode and pin 2 of the SL TVS are

connected to ground.

www.semtech.com

ã 2000 Semtech Corp.

SL05 THRU SL24

PROTECTION PRODUCTS

Outline Drawing - SOT23

Land Pattern - SOT23

Note 1 : Grid placement courtyard is 8 x 8 elements (4mm x 4mm) in accordance with the international grid detailed in IEC

Publication 97.

www.semtech.com

ã 2000 Semtech Corp.

SL05 THRU SL24

PROTECTION PRODUCTS

Marking Codes

Marking

Part Number

Code

SL05

SL12

SL15

SL24

L05

L12

L15

L24

Ordering Information

Working

Part Number

Qty per Reel

Reel Size

Voltage

SL05.TC

SL05.TG

SL12.TC

SL12.TG

SL15.TC

SL15.TG

SL24.TC

SL24.TG

3,000

10,000

3,000

7 Inch

13 Inch

7 Inch

12V

15V

24V

10,000

3,000

13 Inch

7 Inch

10,000

3,000

13 Inch

7 Inch

10,000

13 Inch

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.

SL24TC [SEMTECH]

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