LESDA5V3LT1G - Leshan Radio Company Co., Ltd.

Dual transil array for ESD protection

General Description

The LESDAxxxLT1G is a dual monolithic voltage

suppressor designed to protect components which

are connected to data and transmission lines against

ESD. It clamps the voltage just above the logic level

supply for positive transients, and to a diode drop

below ground for negative transients. It can also

work as bidirectionnal suppressor by connecting

only pin1 and 2.

Applications

z Computers

z Printers

z Communication systems

It is particulary recommended for the RS232 I/O

port protection where the line interface withstands

only with 2kV ESD surges.

Absolute Ratings (Tamb=25°C )

Symbol Parameter Value Units

PPP Peak Pulse Power (tp = 8/20μs) 300 W

TLMaximum lead temperature for soldering during 10s 260 °C

Tstg Storage Temperature Range -55 to +15 °C

Top Operating Temperature Range -40 to +125 °C

TjMaximum junction temperature 150 °C

Electrostatic discharge

25 MIL STD 883C -Method 3015-6

IEC61000-4-2 air discharge

VPP 16

IEC61000-4-2 contact discharge 9

kv

Features

z 2 Unidirectional Transil functions

z Low leakage current: IR max< 20 μA at VBR

z 3 00W peak pulse power(8/20μs)

z High ESD protection level: up to 25 kV

Benefits

z High ESD protection level

z up to 25 kV. High integration.

z Suitable for high density boards.

Complies with the following standards

IEC61000-4-2 Level 4

MIL STD 883c - Method 3015-6 Class 3

(Human Body Model)

1

3

2

LESDAXXXLT1G

SOT– 23

LESHAN RADIO COMPANY, LTD.

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Electrical Parameter

Symbol Parameter

VRM Stand-off voltage

VBR Breakdown voltage

VCL Clamping voltage

IRM Leakage current

IPP Peak pulse current

αT Voltage temperature coefficient

VFForward voltage drop

C Capacitance

RdDynamic resistance

Electrical Characteristics

VBR VFRdαT C

Min. Max. IRVRM IRM Max. IFTyp.(1) Max.(2) Typ. 0v bias

Part Numbers

v v mA v µA v mA

mΩ 10-4/°C pF

5.3 5.9 1 3 2 1.25 200 280 5 220

6.1 7.2 1 5.25 20 1.25 200 350 6 140

14.2 15.8 1 12 5 1.25 200 650 10 90

25 30 1 24 1 1.2 10 1000 10 50

1.Square pulse IPP=15A,tp=2.5µs 2.△VBR=aT*(Tamb-25°C)*VBR(25°C)

Fig1.Peak power dissipation versus Fig2. Peak pulse power versus exponential

Initial junction temperature pulse duration(Tj initial=25°C)

LESDA5V3LT1G

LESDA6V1LT1G

LESDA14V2LT1G

LESDA25LT1G

Typical Characteristics

LESHAN RADIO COMPANY, LTD.

LESDAXXXLT1G

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Fig3. Clamping voltage versus peak Fig4. Capacitance versus reverse

pulse current(Tj initial=25°C, Applied voltage

rectangular Waveform,tp=2.5

μ

s)

Fig5.Relative variation of leakage current Fig6. Peak forward voltage drop versus

Versus junction temperature peak forward current

Application Note

Electrostatic discharge (ESD) is a major cause of failure in electronic systems. Transient Voltage

Suppressors (TVS) are an ideal choice for ESD protection. They are capable of clamping the incoming transient

to a low enough level such that damage to the protected semiconductor is prevented.

Surface mount TVS arrays offer the best choice for minimal lead inductance. They serve as parallel

protection elements, connected between the signal line to ground. As the transient rises above the operating

voltage of the device, the TVS array becomes a low impedance path diverting the transient current to ground.

The ESDAxxL array is the ideal board evel protection of ESD sensitive semiconductor components.

The tiny SOT23 package allows design flexibility in the design of high density boards where the space

saving is at a premium. This enables to shorten the routing and contributes to hardening againt ESD.

LESHAN RADIO COMPANY, LTD.

LESDAXXXLT1G

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LESHAN RADIO COMPANY, LTD.

LESDAXXXLT1G

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NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M,1982

2. CONTROLLING DIMENSION: INCH.

INCHES MILLIMETERS

DIM MIN MAX MIN MAX

A0.1102 0.1197 2.80 3.04

B0.0472 0.0551 1.20 1.40

C0.0350 0.0440 0.89 1.11

D0.0150 0.0200 0.37 0.50

G0.0701 0.0807 1.78 2.04

H0.0005 0.0040 0.013 0.100

J0.0034 0.0070 0.085 0.177

K0.0140 0.0285 0.35 0.69

L0.0350 0.0401 0.89 1.02

S0.0830 0.1039 2.10 2.64

V0.0177 0.0236 0.45 0.60

SOT

-

23

DJ

K

L

A

C

BS

H

GV

12

3

mm

inches

0.037

0.95

0.037

0.95

0.079

2.0

0.035

0.9

0.031

0.8

LESHAN RADIO COMPANY, LTD.

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LESDAXXXLT1G

Reel Dimensions

Metric Dimensions Govern –– English are in parentheses for reference only

EMBOSSED TAPE AND REEL DATA

FOR DISCRETES

A

T Max

Outside Dimension

Measured at Edge

G

Inside Dimension

Measured Near Hub

20.2mm Min

(.795’’)

1.5mm Min

(.06’’)

13.0mm ± 0.5mm

(.512 ±.002’’)

50mm Min

(1.969’’)

Full Radius

Size A Max G T Max

8 mm 330mm

(12.992’’) 8.4mm+1.5mm, -0.0

(.33’’+.059’’, -0.00) 14.4mm

(.56’’)

LESHAN RADIO COMPANY, LTD.

Storage Conditions

Temperature: 5 to 40 Deg.C (20 to 30 Deg. C is preferred)

Humidity: 30 to 80 RH (40 to 60 is preferred )

Recommended Period: One year after manufacturing

(This recommended period is for the soldering condition only. The

characteristics and reliabilities of the products are not restricted to

this limitation)

Shipment Specification

10 Reel

12 Inner Box/Carton

360KPCS/Carton

Dim(Unit:mm)

10Reel/Inner Box

30KPCS/Inner Box

LABEL

CPN

LABEL LABEL

LABEL

乐山无线电股份有限公司

Leshan Radio Com

p

an

y,

Ltd.

MARK

195mm*195mm*150mm

460mm*400mm*420mm

8000PCS/Reel (SOT-723,SOD-723)

3000PCS/Reel 80KPCS/Inner Box (SOT-723,SOD-723)

960KPCS/Carton (SOT-723,SOD-723)

LESHAN RADIO COMPANY, LTD.