RCLAMP0504S.TCT - SEMTECH - Datasheet.Live

1www.semtech.com

RClamp0504S

RailClamp





Low Capacitance TVS Array

PROTECTION PRODUCTS - RailClamp





Description Features

Circuit Diagram Schematic & PIN Configuration

Revision 01/17/2008

RailClamps are surge rated diode arrays designed to

protect high speed data interfaces. This series has

been specifically designed to protect sensitive compo-

nents which are connected to data and transmission

lines from overvoltage caused by ESD (electrostatic

discharge), CDE (Cable Discharge Events), and EFT

(electrical fast transients).

The unique design incorporates surge rated, low

capacitance steering diodes and a TVS diode in a

single package. During transient conditions, the

steering diodes direct the transient to either the

positive side of the power supply line or to ground. The

internal TVS diode prevents over-voltage on the power

line, protecting any downstream components.

The low capacitance array configuration allows the user

to protect four high-speed data or transmission lines.

The low inductance construction minimizes voltage

overshoot during high current surges. This device is

optimized for ESD protection of portable electronics.

They may be used to meet the ESD immunity require-

ments of IEC 61000-4-2, Level 4 (±15kV air, ±8kV

contact discharge). Applications

Mechanical Characteristics

USB 2.0

USB OTG

Monitors and Flat Panel Displays

Digital Visual Interface (DVI)

Gigabit Ethernet

IEEE 1394 Firewire Ports

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)

Array of surge rated diodes with internal TVS Diode

Small package saves board space

Protects up to four I/O lines & power line

Low capacitance (<3pF) for high-speed interfaces

No insertion loss to 2.0GHz2.0GHz

2.0GHz2.0GHz

2.0GHz

Low leakage current and clamping voltage

Low operating voltage: 5.0V

Solid-state silicon-avalanche technology

JEDEC SOT-23 6L package

Nominal Dimensions: 2.9x2.8mm

RoHS/WEEE Compliant

Molding compound flammability rating: UL 94V-0

Marking: Marking Code

Packaging: Tape and Reel

SOT-23 6L (Top View)

13 4 6

2 2008 Semtech Corp. www.semtech.com

PROTECTION PRODUCTS

RClamp0504S

Absolute Maximum Rating

Electrical Characteristics (T=25oC)

gnitaRlobmySeulaVstinU

)sµ02/8=pt(rewoPesluPkaePP

051sttaW

)sµ02/8=pt(tnerruCesluPkaePI

)riA(2-4-00016CEIrepDSE

)tcatnoC(2-4-00016CEIrepDSE

DSE

erutarepmeTgnitarepOT

521+ot55-C°

erutarepmeTegarotST

GTS

051+ot55-C°

Note 1: I/O pins are pin 1, 3, 4, and 6

retemaraPlobmySsnoitidnoCmuminiMlacipyTmumixaMstinU

egatloVffO-dnatSesreveRV

MWR

2ot5niP5V

egatloVnwodkaerBesreveRV

Am1=

2ot5niP

tnerruCegakaeLesreveRI

MWR

C°52=T,V5=

2ot5niP

3Aµ

egatloVgnipmalCV

sµ02/8=pt,A1=

2nipotnipynA

51V

egatloVgnipmalCV

sµ02/8=pt,A6=

2nipotnipynA

52V

ecnaticapaCnoitcnuJC

zHM1=f,V0=

2nipotnipO/IynA

3Fp

zHM1=f,V0=

snipO/IneewteB

5.1Fp

 2008 Semtech Corp. www.semtech.com

PROTECTION PRODUCTS

RClamp0504S

Typical Characteristics

Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve

100

110

0 25 50 75 100 125 150

Ambient Temperature - TA (oC)

% of Rated Power or IPP

Clamping Voltage vs. Peak Pulse CurrentPulse Waveform

100

110

0 5 10 15 20 25 30

Time (µs)

Percent of I PP

e-t

td = IPP/2

Waveform

Parameters:

tr = 8µs

td = 20µs

0.01

0.1

0.1 1 10 100 1000

Pulse Duration - tp (µs)

Peak Pulse Power - PPP (kW)

Normalized Junction Capacitance vs. Reverse VoltageForward Voltage vs. Peak Pulse Current

0123456

Peak Pulse Current - I

(A)

Forward Voltage - V

(V)

Waveform

Parameters:

tr = 8µs

td = 20µs

01234567

Peak Pulse Current - IPP (A)

Clamping Voltage - VC (V)

Waveform

Parameters:

tr = 8µs

td = 20µs

Line to Ground

Line to Line

0.2

0.4

0.6

0.8

1.2

1.4

012345

Reverse Voltage - VR (V)

CJ(VR) / CJ(VR=0)

f = 1 MHz

4 2008 Semtech Corp. www.semtech.com

PROTECTION PRODUCTS

RClamp0504S

Insertion Loss S21 (I/O to Pin 2) Insertion Loss S21 (I/O to I/O)

Analog Crosstalk ESD Clamping

(+8kV Contact per IEC 61000-4-2)

1 2

START

030 MHz 3

STOP 000

000 000 MHz

CH1 S21 LOG 6 dB / REF 0 dB

1: -0.1801 dB

900 MHz

2: -0.6816 dB

1.8 GHz

3: -3.0407 dB

2.448 GHz

4: -3.3538 dB

2.5 GHz

0 dB

-6 dB

-12 dB

-18 dB

-24 dB

-30 dB

-36 dB 1

GHz

100

MHz

GHz

MHz

1 2

START

030 MHz 3

STOP 000

000 000 MHz

CH1 S21 LOG 6 dB / REF 0 dB

1: -0.1063 dB

900 MHz

2: -0.2660 dB

1.8 GHz

3: -0.5657 dB

2.5 GHz

0 dB

-6 dB

-12 dB

-18 dB

-24 dB

-30 dB

-36 dB 1

GHz

100

MHz

GHz

MHz

START

030 MHz 3

STOP 000

000 000 MHz

CH1 S21 LOG 20 dB / REF 0 dB

Note: Data is taken with a 10x attenuator

 2008 Semtech Corp. www.semtech.com

PROTECTION PRODUCTS

RClamp0504S

Device Connection Options for Protection of Four

High-Speed Data Lines

This device is designed to protect data lines by

clamping them to a fixed reference. When the voltage

on the protected line exceeds the reference voltage

the steering diodes are forward biased, conducting the

transient current away from the sensitive circuitry.

Data lines are connected at pins 1, 3, 4 and 6. Pin 2

should be connected directly to a ground plane. The

path length is kept as short as possible to minimize

parasitic inductance.

The positive reference is connected at pin 5. The

options for connecting the positive reference are as

follows:

1. To protect data lines and the power line, connect

pin 5 directly to the positive supply rail (VCC). In this

configuration the data lines are referenced to the

supply voltage. The internal TVS diode prevents

over-voltage on the supply rail.

2. In applications where the supply rail does not exit

the system, the internal TVS may be used as the

reference. In this case, pin 5 is not connected.

The steering diodes will begin to conduct when the

voltage on the protected line exceeds the working

voltage of the TVS (plus one diode drop).

3. In applications where complete supply isolation is

desired, the internal TVS is again used as the

reference and VCC is connected to one of the I/O

inputs. An example of this configuration is the

protection of a SIM port. The Clock, Reset, I/O,

and VCC lines are connected at pins 1, 3, 4, and 6.

Pin 2 is connected to ground and pin 5 is not

connected.

Matte Tin Lead Finish

Matte tin has become the industry standard lead-free

replacement for SnPb lead finishes. A matte tin finish

is composed of 100% tin solder with large grains.

Since the solder volume on the leads is small com-

pared to the solder paste volume that is placed on the

land pattern of the PCB, the reflow profile will be

determined by the requirements of the solder paste.

Therefore, these devices are compatible with both

lead-free and SnPb assembly techniques. In addition,

unlike other lead-free compositions, matte tin does not

have any added alloys that can cause degradation of

the solder joint.

Protection of Four Data Lines and Power Supply Line

Applications Information

Protection of Four Data Lines Using Internal TVS

Diode as Reference

6 2008 Semtech Corp. www.semtech.com

PROTECTION PRODUCTS

RClamp0504S

Applications Information - Spice Model

RClamp0504S Spice Model

sretemaraPecipSS4050pmalCR

retemaraPtinU)DRCL(1D)DRCL(2D)SVT(3D

SIpmA81-E92.161-E35.101-E87.1

VBtloV00100157.7

JVtloV38.018.095.0

SRmhO787.0159.0177.0

VBIpmA3-E13-E13-E1

OJCdaraF21-E0.121-E8.021-E111

TTces91-E145.291-E145.29-E145.2

M--512.0001.0313.0

N--1.11.11.1

GEVe11.111.111.1

0.7 nH

 2008 Semtech Corp. www.semtech.com

PROTECTION PRODUCTS

RClamp0504S

Outline Drawing - SOT-23 6L

Land Pattern - SOT-23 6L

.110 BSC

.037 BSC

DETAIL

aaa C

SEATING

ccc C

2X N/2 TIPS

2X E/2

SEE DETAIL

bxN

.008

.060

.114

.063

.122

.010 -

0.20

1.60

3.10

2.80 BSC

0.95 BSC

.069 1.50

2.90

.020 0.25

1.75

0.50

(L1)

0.25

PLANE

GAGE

2.80.110

bbb C A-B D

0°

.008

.004

.012

.003

(.024)

.018

.035

.000

.035 -

.045

0.10

0.20

10° 0° -10°

1.15

(0.60)

0.45.024

.009

0.30

0.08

.057

.051

.006 0.00

.90

0.90

0.22

0.60

0.15

1.45

1.30

1.90 BSC.075 BSC

e1 D

PLANE

DATUMS AND TO BE DETERMINED AT DATUM PLANE

CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).

DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS

OR GATE BURRS.

NOTES:

2. -A- -B- -H-

SIDE VIEW

NOM

INCHES

DIMENSIONS

aaa

bbb

ccc

DIM

MIN

MILLIMETERS

MAX MIN NOM MAX

DIMENSIONS

INCHES

DIM

MILLIMETERS

.043

.141

.055

(.098)

.037

.024

1.40

(2.50)

0.95

0.60

1.10

3.60

XDIMENSIONS

INCHES

DIM

MILLIMETERS

THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.

CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR

COMPANY'S MANUFACTURING GUIDELINES ARE MET.

NOTES:

8 2008 Semtech Corp. www.semtech.com

PROTECTION PRODUCTS

RClamp0504S

Contact Information

Semtech Corporation

Protection Products Division

200 Flynn Rd., Camarillo, CA 93012

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

rebmuNtraP repytQ

leeR

eziS

TCT.S4050pmalCR000,3hcnI7

Ordering Information

Tape and Reel Specification

Note: This is a lead-free RoHS/WEEE compliant device

RailClamp and RClamp are marks of Semtech Corporation

Marking

S54

epaT

htdiW )xaM(,BD1DE F

)XAM( P0P2P)XAM(TW

mm8 mm2.4

)561.(

mm1.0+5.1

mm0.0-

mm0.1

50.0±

01.±057.1

mm 50.0±5.3

mm mm4.2 1.0±0.4

1.0±0.4

50.0±0.2

mm mm4.0

mm0.8

mm3.0+

mm1.0-

0A0B0K

mm50.0-/+32.3mm50.0-/+71.3mm50.0-/+73.1

User Direction of feed