TBU-DB055-100-WH-Q - BOURNS

TCS™ & TBU® High-Speed Protectors

Electronic Current Limiters

TCS™ HSP Device-based Solution Selection

Step 1: Current characterization:

Determine the maximum signal current and

the maximum operating temperature of the

application (e.g., 100 mA and 65 °C).

Step 2: Overvoltage selection:

Determine the trip current derating factor

using the data sheet graph and divide the

maximum operating current by this number

(e.g., 100 mA/0.75 = 133 mA).

Step 3: TCS™ HSP device selection:

Pick a TCS™ device with a minimum trip current at

25 °C that is above the number calculated in step 2

(e.g., e Model TCS-DL004-250-WH has a

minimum trip current of 250 mA, making it the lowest

trip current device that will work in the example).

Step 4: Tertiary protection:

Determine whether the selected device’s series

resistance will adversely aect circuit performance.

If a lower resistance device is required, then a device

with a higher trip current should be selected.

Choosing between a TCS™ or TBU® HSP

Basic TCS™ HSP Device Operation

e Bourns® TCS™ DL Series High-Speed Protector (HSP)

products contain dual, well-matched, low resistance,

bidirectional, very high-speed Transient Current Suppressors.

By limiting the maximum current to a safe level, a Bourns®

TCS™ DL device oers superior protection for very high data

rate dierential lines against faults caused by momentary

short circuits, induction and lightning surges.

A TCS™ device is designed to trigger at a specied current

level and provide a moderate amount of foldback. e

following graph shows the normalized response of the device.

Key Features:

• 50 ns response time

• Low let-through energy

• Low series resistance

• Well-matched channel to channel resistance

• Low insertion loss

• ree trigger current levels available

Key Benets:

• Creates ideal diode response to maximize protection

- New approach: TVS diode and a TCS™ HSP

working with the internal ESD protection of the

protected circuit

• Supports applications up to a frequency of 6 GHz

• Up to 90 % reduction in stress compared to

stand-alone Overvoltage Protection (OVP)

• Negligible impact on dierential signal balance

• Improves product reliability compared to stand-alone OVP

• Can reduce product repair costs

Bourns® TCS™ HSP Product Overview

TCS™ Device - VI Curve

Normalized Current (A)

Voltage (V)

1.2

1.0

0.8

0.6

0.4

0.2

-0.2

-0.4

-0.6

-0.8

-1.0

-1.2

-40 -30 -20 -10 010203040

Linear Resistance

(Slope = 1/Series Resistance)

Maximum Voltage

Current Limit is Active

Condition TCS-DL TBU® HSP

High Voltage Rating Required (> 40 V) NY

Strong Foldback Required NY

Short Duration Transient YY

Continuous or Repetitive AC Fault Condition NY

Very Low Series Resistance Required (< 3 Ω) YN

Overvoltage Protection Device Alone Provides Inadequate Protection Y Y

Very Well-matched Channel to Channel Resistance Required Y N

Extremely Fast Response Time Required

(from Normal Operation to Protected State) Y N*

Extremely Fast Reset Time Required Y N*

* Except Model P40-G240-WH.

Bourns® TCS™ HSP Product Examples

VDSL Class H Driver – Fully Resettable GR-1089

ISSUE 6 Solution for Port Types 1, 3 and 5 VDSL Class H Driver Protection for ITU-T K.21

Gigabit Ethernet Surge Protection – GR-1089

ISSUE 6 Port Type 4, ITU-T K.21 Basic

Test Results for Gigabit Ethernet

Surge Protection Circuit

Create the Ideal Diode Response with a Bourns® TCS™ High-Speed Protector

SURGE CURRENT (A)

DIODE VOLTAGE (V)

02 468101214161820

“Ideal” diode response of a

TVS Diode with the TCS™

HSP device at the interface

requiring protection

CDSOD323-T05C

IDEAL DIODE (5.5 V)

NEW APPROACH

Protected

Circuit

To Connector

1/2 TCS-DL004-xxx-WH

CDSOD323-T05C

In this example the protected circuit contains an ESD protection

design that clamps at ~ 5.6 V with a current of 300 mA.

VDSL Driver

TCS-DL004-500-WH

CD143A-SR70

V+

V-

CD0603-S0180

SMAJ24A RT

2038-80-SM-RPLF

1:1.4

To Receiver

VDSL Driver

TCS-DL004-500-WH

CDSOT236-

DSL03xx*

V+

V-

CD0603-S0180

2036-42-SM-RPLF

1:1.4

To Receiver

33 nF

Ethernet

PHY

TCS-DL004-250-WH

Not Used To Connecto

CDSOD323-T05C

1 CT : 1 CT

1/4 SM51589L

Ch1 196 mAM A

400 ns

10.00 %

50.0 A Ch4

5.00 V

Ch1 Max

6.10 V

Ch4 Max

102 A

PHY sees:

Peak Voltage: 5.4 V

Peak Current: 595 mA

Energy: ~ 3 µJ

5.4 V

280 mA

Ch2 Min

-4.61 V

Ch3 Max

595 mA

Ch3 200 mA

Ch2 Ch35.00 V

10.0 V 400 nsMath

Surge Current

PHY - Voltage

PHY + Voltage

Diﬀerential PHY Voltage

PHY Input Current

Ideal Diode Response

TBU® HSP Device-based Solution Selection

Step 1: Current characterization:

Determine the peak system operating current and

maximum operating ambient temperature. Use the

TBU® HSP data sheet’s “trigger current versus temperature”

derating curve to determine the TBU® HSP derating value.

Step 2: Overvoltage selection:

Select an overvoltage device that has the lowest

available DC breakdown voltage greater than the normal

system voltages and any expected AC power faults. e

selected device must also be capable of handling the

required lightning current.

Step 3: TBU® HSP device selection:

Choose a TBU® HSP device with a maximum impulse

voltage (Vimp) greater than the maximum impulse

breakover or clamping voltage of the selected overvoltage

protector at the required peak surge current. e selected

TBU® device must also have aminimum specied Itrigger

(use derating value from step 1) above the maximum peak

system operating current.

Step 4: Tertiary protection:

In many applications, the protected circuit can source and

sink sucient current to trigger the TBU® HSP.When this

is not the case, a small avalanche diode to ground or small

signal diodes clamping to the power supply and ground

may be placed aer the TBU® device. is will ensure that

the TBU® HSP triggers and properly protects the circuit.

Basic TBU® HSP Device Operation

Bourns® TBU® High-Speed Protectors (HSPs) are

circuit protection devices constructed using MOSFET

semiconductor technology. When placed in series

with a signal line, the TBU® HSP monitors the current

owing through the line. If the current exceeds a preset

level, the TBU® HSP triggers, providing an eective

barrier to high voltages and currents.

e TBU® HSP begins protecting in less than 1 μs, once

line current exceeds the TBU® device’s trigger current

Itrigger. When in the protected state, the TBU® HSP

restricts line current to less than 1 mA typically, and

blocks voltages up to the maximum voltage rating of

the device.

At the end of a surge event, the TBU® HSP will begin

the reset process when the voltage across the device

drops below the V

reset level and will complete the reset

process when the signal line returns to its normal

operating range.

If the line has a normal DC bias above V

reset, the

voltage across the TBU® HSP may not fall below V

reset

aer the surge. In such cases, special care needs to be

taken to ensure that the TBU® HSP will reset. Bourns’

application engineers can provide further assistance.

Key Features:

• TBU® HSP is a series protection device

• Triggers at a specied current

• Can block voltages up to 850 V, enabling easy coordination

• Provides superior protection in less than 1 µs

• Resets on voltage (V

reset Valve)

• Does not add capacitance to the signal line

Key Benets:

• AEC-Q101 compliant* (“Q” part number sux)

• High-speed performance

• Blocks voltages and currents

• Extremely low let-through energy

• Self-resetting (V

reset Valve)

• Very high bandwidth up to 3 GHz

• Small size in DFN package

• Model TBU-PL series oers voltage triggering

• Small PCB area

• Ultra-low prole

Bourns® TBU® HSP Product Overview

Example TBU® HSP VI Curve (TBU-CA050-300-WH)

CURRENT

(100 mA/div)

VOLTAGE

(5 V/div)

ITRIP

VRESET

Line 1

SLIC

TBU

MOV-10D201K

TBU-PL060-200-WH

MOV-10D201K

Line 1

Line 2

GND

-VBAT

Line 2

SLIC

Bourns® TBU® HSP Product Examples

VOICE SOLUTION EXAMPLE

VOICE Protection Solution Selection Guide

Industry Standard Surge & AC

Withstand

Bourns® TBU® Device Selection

TBU® Device

Part Number Qty.

OVP Device

Part

Number

Qty.

Telcordia GR-1089-CORE

Intra-building

Port Type 4

1500 V, 100 A, 2/10 µs

120 Vrms, 25 A, 900 s TBU-PL050-200-WH 1MOV-07D201K 2

Telcordia GR-1089-CORE

Intra-building

Port Type 4a

1000 V, 100 A, 10/1000 µs

120 Vrms, 25 A, 900 s TBU-PL060-200-WH 1MOV-10D201K 2

Non-GR-1089-CORE Intra-

building Specications

5000 V, 500 A, 2/10 µs

230 Vrms, 25 A, 900 s TBU-PL085-200-WH 1MOV-10D361K 2

1500 V, 100 A, 2/10 µs

275 Vrms, 25 A, 900 s TBU-PL085-200-WH 1MOV-10D431K 2

ITU-T Basic K.20, K.21,

K.45

4000 V, 40 Ω, 10/700 µs

230 Vrms 10 Ω - 1000 Ω,

900 s

600 Vrms 600 Ω, 0.2 s

TBU-PL075-200-WH 1MOV-10D361K 2

4000 V, 40 Ω, 10/700 µs

230 Vrms 10 Ω -1000 Ω,

900 s

600 Vrms 600 Ω, 0.1 s

TBU-PL060-200-WH 1TISP4400M3BJ 2

ITU-T Enhanced K.20,

K.21, K.45

6000 V, 40 Ω, 10/700 µs

240 Vrms 10 Ω - 1000 Ω,

900 s

600 Vrms 600 Ω, 0.2 s

600 Vrms 600 Ω, 1 s*

1500 Vrms, 200 Ω, 2 s*

TBU-PL085-200-WH 1MOV-10D391K 2

6000 V, 40 Ω, 10/700 µs

240 Vrms 10 Ω - 1000 Ω,

900 s

600 Vrms 600 Ω, 1 s

1500 Vrms, 200 Ω, 2 s

TBU-PL060-200-WH 1TISP4500H3BJ 2

* Gas Discharge Tube (GDT) special test protector with DC breakdown (DCBD) of less than 330 V.

Notes:

1) The MOV maximum continuous rms voltage rating should not be exceeded. The exception is where the data sheet

highlights withstand capability such as the 600 Vrms, 1 A for 0.2 s, for example.

2) If EN55024 EMC compliance is required, the TBU® device may require capacitors to be tted between the Tip and Ring

connections and ground (i.e., in parallel with the MOV device). The capacitance value can be chosen to meet levels as

follows:

• 10 nF for EN55024 Level 1

• 20 nF for EN55024 Level 2

• 47 nF for EN55024 Level 3

Selection of capacitor voltage rating depends upon TBU® HSP part number selection. Recommendations include:

• TBU-PL050 & TBU-PL060 Series: 120 VAC, 500 V Peak Surge Rated

• TBU-PL075 & TBU-PL085 Series: 240 VAC, 750 V Peak Surge Rated

Review VOICE Protection Solution Selection Guide to select

TBU® HSP and overvoltage part numbers to meet protection

industry standard.

1000 V, 100 A, 10/1000 µs Surge Test Results

120 Vrms, 25 A Power Fault Test Results

Ch1 64 VM A

1.00 µs

200 mA Ω Ch4

100 V

Ch1 Max

292 V

Ch4 Max

520 mA

Ch1

Surge Voltage (100 V/DIV)

TBU® HSP Current (200 mA/DIV)

Ch1 1.60 mVM A

4.00 ms

20.0 mA Ω Ch4

100 V

Ch1 RMS

120 V

Ch4 Max

55.6 mA

Ch4 Min

-58.8 mA

Line

AC Voltage (100 V/DIV)

TBU® HSP Current (200 mA/DIV)

Bourns® TBU® HSP Product Examples

RS232 Interface

VDSL

RS422 Interface

T1/E1 Interface

Intelligent Transport System

Microwave Link

CANBUS

Video Surveillance

TBU-CA065-200-WH

(TBU-CA085-100-WH)

CDSOD323-T24C

RS232 2031-23T-SM

(2015-23-xxx)

TBU-CA065-100-WH

CDSOD323-T12C

RS422

MOV-10D201K

TBU-CA065-100-WH

CDSOD323-T12C

CANBUS

2031-23T-SM

Diode voltage dependent on CANbus driver resistibility. Typically, 6 - 20 V, check specication.

Composite

Video

TBU-CA065-100-WH

(TBU-CA085-100-WH)

75 Ω Coax

75 Ω

2031-23T-SM

(2015-23-xxx)

HV LP

Filter

2031-15T-SM

TBU-CA025-300-WH

DC or AC

Power

IF TX/RX

Protection for higher power split-mounted infrared feed equipment

TBU-CA065-100-WH

(TBU-CA085-100-WH) 2031-23T-SM

(2015-23-xxx)

CDSOD323-T05LC

SDI

T1/E1

Physical Line

Interface

Unit

T1a

Transformer

T1b

CM Transformer

TBU1

Fuse

1.25 A

TxTIP

TxRING

P850-U

TTIP

TRING

RTIP

RRING

Fuse

2031-42T-SM

1.25 A

TBU1

Fuse

1.25 A

RxTIP

RxRING

P850-U

Fuse

1.25 A

VDSL

Driver

TBU-CA050-500-WH

2031-15T-SM

C1a

C1b

Ethernet Protection Circuit Test Results –

Dierential Surge Test: 800 V, 1.2/50 μs Voltage, 8/20 μs Current

Ethernet Surge and Power Cross Protection –

GR-1089 ISSUE 6, Port Type 4

RS485 Interface

AC Power Cross Test 120 Vrms, 25 A BMS Sense Line Interface

TBU-CA065-300-WH

CDSOT23-SM712

RS485

MOV-10D201

Ethernet

PHY

TBU-DT065-300-WH

2031-23T-SM-RPLF

Not Used To Connecto

1 CT : 1 CT

1/4 SM51589L

80 VM A

4.00 µs

Ch1 Ma

510 V

Ch3 Ma

2.12 A

Ch4 Ma

109.0 A

Ch1

140 VM A

40.0 ns

Ch1 Max

552 V

Ch3 Max

2.12 A

Ch1

GDT Voltage (500 V/DIV)

Total Surge Current (50 A/DIV)

TBU® HSP Current (2 A/DIV)

GDT Voltage (200 V/DIV)

TBU® HSP Current (2 A/DIV)

-12 VM A

4.00 ms

Ch3 Max

430 mA

Ch3 Min

-410 mA

Math RMS

120 V

Ch1

Power Cross Voltage (100 V/DIV)

TBU® HSP Current (500 mA/DIV)

MPU

TBU-DB-Q

IPA

IMA

Multicell

Battery

Monitor

Multicell

Battery

Monitor

IPB

IMB

IPA

IMA

CN-1

TBU-DB-Q

isoSPI

Isolated

Communication

Interface

Isolation

SPI

Dual Channel Bidirectional TCS™ HSP

Part

Number

Maximum Ratings Operating Characteristics

Device Size

(mm) Form Factor

Vimp

(V)

Itrigger (mA) tlimit

(ns)

Ron (Ω)

Min. Typ. Max. Typ.

TCS-DL004-250-WH 40 250 375 500 50 2.3 4.00 x 2.50

D042

ARBC

TCS-DL004-500-WH 40 500 750 1000 50 1.4 4.00 x 3.50

D045

ARBC

TCS-DL004-750-WH 40 750 1100 1500 50 1.0 4.00 x 4.50

D047

ARBC

TCS-DL Product Family

imp Maximum peak impulse voltage withstand with duration less than 10 ms.

Itrigger Current required for the device to go from operating state to protected state.

tlimit Time for the device to go from normal operating state to current limiting state.

Ron Series resistance of the TCS™ device.

See data sheet for detailed specications.

Unidirectional Dual TBU® HSP

Part

Number

Maximum Ratings Operating Characteristics

Device Size

(mm) Form Factor

Vimp

(V)

Vrms

(V)

Itrigger

Min.

(mA)

Itrigger

Max.

(mA)

tblock

(µs)

Rtyp

(Ω)

TBU-DT065-100-WH 650 300 100 200 1 8.5

5.00 x 5.00

T855

0074

TBU-DT065-200-WH 650 300 200 400 1 5.6

TBU-DT065-300-WH 650 300 300 600 1 4.6

TBU-DT065-500-WH 650 300 500 1000 1 4.0

TBU-DT085-100-WH 850 425 100 200 1 10.3

TBU-DT085-200-WH 850 425 200 400 1 7.4

TBU-DT085-300-WH 850 425 300 600 1 6.8

TBU-DT085-500-WH 850 425 500 1000 1 5.8

TBU-DT Product Family

imp Maximum peak impulse voltage withstand with duration less than 10 ms.

rms Maximum continuous alternating current RMS voltage.

Itrigger Minimum and maximum current required for the device to go from operating state to protected state.

tblock Maximum time for the device to go from normal operating state to protected state.

Rtyp Typical series resistance of the TBU® device.

Consult factory for alternate specication values. See data sheet for detailed specications.

Part

Number

Maximum Ratings Operating Characteristics

Device Size

(mm) Form Factor

Vimp

(V)

Vdc

(V)

Itrigger

Min.

(mA)

Itrigger

Max.

(mA)

tblock

(µs)

Rtyp

(Ω)

TBU-DB055-100-WH-Q 550 450 100 200 1 13.5 5.50 x 6.50

T2510

53802

Part

Number

Maximum Ratings Operating Characteristics

Device Size

(mm) Form Factor

Vimp

(V)

Vrms

(V)

Itrigger

Min.

(mA)

Itrigger

Max.

(mA)

tblock

(µs)

Rtyp

(Ω)

TBU-DF055-050-WH 550 250 50 100 1 19

5.50 x 6.50

F5530

53802

TBU-DF055-300-WH 550 250 300 600 1 10

TBU-DF055-500-WH 550 250 500 1000 1 9

TBU-DF085-050-WH 850 425 50 100 1 30

TBU-DF085-300-WH 850 425 300 600 1 20

TBU-DF085-500-WH 850 425 500 1000 1 18

TBU-DF Product Family

TBU-DB-Q Product Family

Part

Number

Maximum Ratings Operating Characteristics

Device Size

(mm) Form Factor

Vimp

(V)

Vrms

(V)

Itrigger

Min.

(mA)

Itrigger

Max.

(mA)

tblock

(µs)

Rtyp

(Ω)

P40-G240-WH 40 28 240 480 0.2 3.6 4.00 x 4.00

TBU-PL050-100-WH 500 300 100 200 1 50

6.50 x 4.00

L501

C954

TBU-PL050-200-WH 500 300 200 400 1 50

TBU-PL060-100-WH 600 350 100 200 1 50

TBU-PL060-200-WH 600 350 200 400 1 50

TBU-PL075-100-WH 750 400 100 200 1 50

TBU-PL075-200-WH 750 400 200 400 1 50

TBU-PL085-100-WH 850 425 100 200 1 50

TBU-PL085-200-WH 850 425 200 400 1 50

P850-G120-WH 850 425 100 200 1 50 4.00 x 8.25

P850-G200-WH 850 425 200 400 1 50 4.00 x 8.25

P40, TBU-PL & P850 Product Familiies

Bidirectional Dual TBU® HSP

Bidirectional Single TBU® HSP

Part

Number

Maximum Ratings Operating Characteristics

Device Size

(mm) Form Factor

Vimp

(V)

Vrms

(V)

Itrigger

Min.

(mA)

Itrigger

Max.

(mA)

tblock

(µs)

Rtyp

(Ω)

TBU-CA025-050-WH 250 100 50 100 1 13.3

6.50 x 4.00

A5050

E075

TBU-CA025-100-WH 250 100 100 200 1 7.1

TBU-CA025-200-WH 250 100 200 400 1 4.2

TBU-CA025-300-WH 250 100 300 600 1 3.2

TBU-CA025-500-WH 250 100 500 1000 1 2.6

TBU-CA040-050-WH 400 200 50 100 1 14.3

TBU-CA040-100-WH 400 200 100 200 1 8.1

TBU-CA040-200-WH 400 200 200 400 1 5.2

TBU-CA040-300-WH 400 200 300 600 1 4.3

TBU-CA040-500-WH 400 200 500 1000 1 3.6

TBU-CA050-050-WH 500 250 50 100 1 15.7

TBU-CA050-100-WH 500 250 100 200 1 9.5

TBU-CA050-200-WH 500 250 200 400 1 6.6

TBU-CA050-300-WH 500 250 300 600 1 5.6

TBU-CA050-500-WH 500 250 500 1000 1 5.0

TBU-CA065-050-WH 650 300 50 100 1 17.7

TBU-CA065-100-WH 650 300 100 200 1 11.5

TBU-CA065-200-WH 650 300 200 400 1 8.6

TBU-CA065-300-WH 650 300 300 600 1 7.6

TBU-CA065-500-WH 650 300 500 1000 1 7.0

TBU-CA085-050-WH 850 425 50 100 1 21.4

TBU-CA085-100-WH 850 425 100 200 1 15.2

TBU-CA085-200-WH 850 425 200 400 1 12.3

TBU-CA085-300-WH 850 425 300 600 1 11.3

TBU-CA085-500-WH 850 425 500 1000 1 10.7

TBU-CA Product Family

imp Maximum peak impulse voltage withstand with duration less than 10 ms.

rms Maximum continuous alternating current RMS voltage.

Itrigger Minimum and maximum current required for the device to go from operating state to protected state.

tblock Maximum time for the device to go from normal operating state to protected state.

Rtyp Typical series resistance of the TBU® device.

Consult factory for alternate specication values. See data sheet for detailed specications.

“TCS” is a trademark of Bourns, Inc. in the U.S. and other countries.

“TBU” is a registered trademark of Bourns, Inc. in the U.S. and other countries, except Japan.

All references to TBU® in this document for use in Japan shall be deemed to be replaced with Bourns® TBU™.

“Bourns” is a registered trademark of Bourns, Inc. in the U.S. and other countries.

www.bourns.com

Bourns® products are available through an extensive network of manufacturer’s

representatives, agents and distributors. To obtain technical applications assistance,

a quotation, or to place an order, contact a Bourns representative in your area.

Specications subject to change without notice. Actual performance in specic

customer applications may dier due to the inuence of other variables. Customers

should verify actual device performance in their specic applications.

Worldwide Sales Oces

Country Phone Fax

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Brazil: +55 11 5505 0601 +55 11 5505 4370

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Other Asia-Pacic Countries: +886 2 25624117 +886 2 25624116

Technical Assistance

Region Phone Fax

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EMEA: +36 88 520 390 +36 88 520 211

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