TCLAMP1202P-TGT - SEMTECH INTERNATIONAL

PROTECTION PRODUCTS

1www.semtech.com

PRELIMINARY

PROTECTION PRODUCTS - TransClamp®®

®®

TClamp1202P

Low Capacitance TClamp®

Surge Protection for 12V Interfaces

Description Features

Functional Circuit Diagram Package Configuration

Revision 5/27/2015

Applications

Mechanical Characteristics

SLP2020P5 Package

Pb-Free, Halogen Free, RoHS/WEEE Compliant

Lead Finish: NiPdAu

Molding Compound Flammability Rating: UL 94V-0

Marking : Marking code + Date Code

Packaging : Tape and Reel

Transient protection for high-speed data lines to

IEC 61000-4-2 (ESD) 20kV (air), 15kV (contact)

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

IEC 61000-4-5 (Lightning) 100A (8/20μs)

Array of surge rated diodes with internal TVS Diode

Protects up to two lines

Low capacitance: (<12pF)

Operating voltage: 12V

Low leakage current

Solid-state silicon-avalanche technology

RS-485 Surge Protection

RS-422 Surge Protection

Industrial Equipment

Remote Meter Readers

Automatic Teller Machines

Digital Surveillance Cameras

CAN-bus

TClamp®1202P provides dedicated surge and ESD

protection for RS-485 and other 12V lines in industrial

applications. It features high surge current capability

of 100A (tp=8/20us) and low clamping voltage making

them ideal for use in harsh transient environments.

This device is designed to replace mulitple discrete

components by integrating low capacitance, surge-

rated compensation diodes with a high power transient

voltage suppressor (TVS). Capacitance is limited to

12pF maximum to ensure correct signal transmission

on high-speed lines. Each TClamp1202P may be used

to protect up to two lines. A voltage bus operating up

to 12V can also be optionally protected.

The TClamp1202P is in a 5-pin SLP2020P5 package,

measuring 2.0 x 2.0mm with a nominal height of

0.60mm. The flow- through package design simplifies

PCB layout.

Nominal Dimensions in mm (Bottom View)

0.60

2.00

Pin 2

Pin 1 Pin 3

Pin 4, 5, Tab

12V

PRELIMINARY

PROTECTION PRODUCTS

TClamp1202P

Absolute Maximum Rating

Electrical Characteristics (T=25oC unless otherwise specified)

retemaraPlobmySsnoitidnoCmuminiMlacipyTmumixaMstinU

egatloVffO-dnatSesreveRV

MWR

21V

egatloVnwodkaerBesreveRV

Am1=

,4snipot3ro2,1sniP

baTdna,5

3.31515.81V

tnerruCegakaeLesreveRI

MWR

C°52=T,V21=

,4snipot3ro2,1sniP

baTdna,5

001.0Aμ

tnerruCegakaeLesreveRI

MWR

C°521=T,V21=

,4snipot3ro2,1sniP

baTdna,5

005.0Aμ

ecnatsiseRcimanyD

3,2

NYD

sn001/2.0=plt

3dna1niP

11.0smhO

egatloVgnipmalC

,A21=

sμ0001/01=

,4snipot3ro2,1sniP

baTdna,5

52V

egatloVgnipmalC

sμ02/8=pt,A001=

,4snipot3ro2,1sniP

baTdna,5

04V

ecnaticapaCnoitcnuJ

,5,4snipot3ro1niP

baTdna

zHM1=f,V0=

21Fp

gnitaRlobmySeulaVstinU

t(rewoPesluPkaeP

C°52=T,)sμ0001/01=P

003sttaW

t(tnerruCesluPkaeP

1= μ0001/0C°52=T,)sI

21A

t(tnerruCesluPkaeP

C°52=T,)sμ02/8=I

001A

)riA(2-4-00016CEIrepDSE

)tcatnoC(2-4-00016CEIrepDSE

DSE

02-/+

51-/+

erutarepmeTgnitarepOT

521+ot55-C°

erutarepmeTegarotST

GTS

051+ot55-C°

Notes

1)ESD gun return path connected to ESD ground reference plane.

2)Transmission Line Pulse Test (TLP) Settings: tp = 100ns, tr = 0.2ns, ITLP and VTLP averaging window: t1 = 70ns to t2 = 90ns.

3) Dynamic resistance calculated from Ipp = 4A to Ipp = 16A

4)Guaranteed by design. Not production tested.

5)Pins 4, 5 and center tab are internally connected

PRELIMINARY

PROTECTION PRODUCTS

TClamp1202P

Typical Characteristics

Non-Repetitive Peak Pulse Power vs. Pulse Time

(VBus Pin 1)

Clamping Voltage vs. Peak Pulse Current

(10/1000us Pulse Waveform)

Forward Voltage vs. Peak Pulse Current

(8/20us Pulse Waveform)

Capacitance vs. Reverse Voltage

(Data Line Pins 1 and 3)

TLP Characteristic

(Data Line Pins 1 and 3)

Clamping Voltage vs. Peak Pulse Current

(8/20us Pulse Waveform)

02468101214

Peak Pulse Current - I

(A)

Clamping Voltage - V

(V)

Waveform

Parameters:

tr = 10µs

td = 1000µs

TX/RX (Pins 1 and 3)

VBus (Pin 2)

0 5 10 15 20 25

TLP Voltage (V)

TLP Current (A)

Transm ission Line Pulse Test (TLP)

Settings:

tp = 100ns , tr = 0.2ns,

TLP

and V

TLP

averaging window:

= 70ns to t

= 90ns

0.1

100

0.1 1 10 100 1000

Peak Pulse Power - P

(kW)

Pulse Duration - tp (µs)

= 25

02468101214

Reverse Voltage - V

(V)

Junction Capacitance - C

(pF)

f = 1 MHz

0 20406080100120

Peak Pulse Current - I

(A)

Clamping Voltage - V

(V)

Waveform

Parameters:

tr = 8µs

td = 20µs

TX/RX (Pins 1 and 3)

VBus (Pin 2)

0 20406080100120

Peak Pulse Current - I

(A)

Forward Voltage - V

(V)

TX/RX (Pins 1 and 3)

PRELIMINARY

PROTECTION PRODUCTS

TClamp1202P

Typical Characteristics

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

(Data Line Pins 1 and 3)

ESD Clamping (-8kV Contact per IEC 61000-4-2)

(Data Line Pins 1 and 3)

Typical Insertion Loss S21

(Data Line Pins 1 and 3)

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

(VBus Pin 2)

ESD Clamping (-8kV Contact per IEC 61000-4-2)

(VBus Pin 2)

-20

100

120

140

160

-10 0 10 20 30 40 50 60 70 80

Time (ns)

Voltage (V)

Measuredwith50Ohmscopeinput

impedance,2GHzbandwidth.Correctedfor

50Ohm,20dBattenuator.ESDgunreturnpath

connectedtoESDgroundplane

-150

-130

-110

-90

-70

-50

-30

-10

-10 0 10 20 30 40 50 60 70 80

Time (ns)

Voltage (V)

Measuredwith50Ohmscopeinput

impedance,2GHzbandwidth.Correctedfor

50Ohm,20dBattenuator.ESDgunreturn

pathconnectedtoESDgroundplane

-10

100

-10 0 10 20 30 40 50 60 70 80

Time (ns)

Voltage (V)

Measuredwith50Ohmscopeinput

impedance,2GHzbandwidth.

Correctedfor50Ohm,20dBattenuator.

ESDgunreturnpathconnectedtoESD

groundplane

Analog Crosstalk

(Pin 1 to 3)

-100

-80

-60

-40

-20

-10 0 10 20 30 40 50 60 70 80

Time (ns)

Voltage (V)

Measuredwith50Ohmscopeinput

impedance,2GHzbandwidth.Correctedfor

50Ohm,20dBattenuator.ESDgunreturn

pathconnectedtoESDgroundplane

START.030MH

3STOP 000.000000MHz

CH1S21 LOG 6 dB / REF 0 dB

1: - 7.4634 dB

800 MHz

2: - 8.8858 dB

900 MHz

3: - 6.2824 dB

1.8 GHz

4: - 4.1204 dB

2.5 GHz

5: - 4.1436 dB

2.7 GHz

0 dB

-6 dB

-12 dB

-18 dB

-24 dB

-30 dB

-36 dB

GHz

100

MHz 3

GHz

MHz

-42 dB

-48 dB

START. 030MHz 3 STOP 000.000000MHz

CH1S21 LOG 20dB /R EF 0 dB

0 dB

-20 d

-40 dB

-60 dB

-80 dB

-100 dB

-120 dB

-140 dB

-160 dB

PRELIMINARY

PROTECTION PRODUCTS

TClamp1202P

Device Connection for Protection of RS-485 Inter-

faces

EIA RS-485 specifies a ±7V ground difference between

devices on the bus. This permits the bus voltage to

range from +12V (5V + 7V) to -7V (0 - 7V).

Because of this requirement, each TClamp1202P can

be configured to protect one line for common mode

surges or one line pair for differential surges.

The example below illustrates how to connect the

TClamp1202P for common mode and differential

mode protection on an RS-485 interface. For common

mode protection, one of the TClamp1202P data pins

(pin 1 or 3) is connected to the TX/RX line and the

other is connected to ground. Pins 4 and 5 as well as

the center tab are not connected. This effectively

makes the device look like a bidirectional 12V TVS to

the circuit. For differential mode protection, each of

the device data pins (1 and 3) are connected to the

transceiver RX/TX pins as shown. Again, Pins 4, 5 and

the center tab are not connected.

Applications Information

RS-485 Common Mode and Differential Surge Protection

Receiver

RDriver

TClamp1202P

PRELIMINARY

PROTECTION PRODUCTS

TClamp1202P

Outline Drawing - SO-8

Land Pattern - SLP2020P5

Outline Drawing - SLP2020P5

bbb

aaa

DIM

0.350.25 0.30

0.350.25

0.08

0.30

0.675 BSC

MILLIMETERS

MAX

0.05

0.65

DIMENSIONS

MIN

0.00

NOM

0.50 0.03

(0.127)

0.60

CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).

COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS.

NOTES:

SEATING

PLANE

aaa c

bbb C A B

E/2

(LASER MARK)

INDICATOR

PIN 1

AD1 1.0250.7750.925

D 2.00 2.101.90

E 2.00 2.101.90 1.0000.7500.900

R0.20

bX2

b0.300.20 0.25

LxN

bbb C A B

D/2

b1X3

e/2

e1 0.725 BSC

THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.

CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR

NOTES:

DIM

MILLIMETERS

0.35

0.60

0.725

1.35

DIMENSIONS

COMPANY'S MANUFACTURING GUIDELINES ARE MET

2.55

C(1.95)

H0.925

K 0.900

CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).

b 0.30

P/2

GZP 0.675

(C)

PRELIMINARY

PROTECTION PRODUCTS

TClamp1202P

Marking Codes Ordering Information

TransClamp and TClamp are trademarks of Semtech Corporation.

Carrier Tape Specification

YW = Alphanumeric character Date Code

rebmuNtraP repytQ

leeR eziSleeR

TGT.P2021pmalCT000,01hcnI31

(LASER MARK)

INDICATOR

PIN 1 12P

Device Orientation in Tape

12P

TClamp1202P‐6‐R0

Pin1Location

(towardssprocketholes)

Contact Information

Semtech Corporation

Protection Products Division

200 Flynn Road, Camarillo, CA 93012

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