Datasheet

ManualsBrandsBourns ManualsIntegrated Circuits (ICs)High-Speed Electronic Current Limiter 425V 450mA

Features

n Superior circuit protection

n Overcurrent protection

n Blocks surges up to rated voltage limit

n High-speed performance

n Small SMT package

n RoHS compliant*

Applications

n RS-485 interfaces

n Exposed sense and data lines

n Factory automation

n Protection modules and dongles

n Process control equipment

n Test and measurement equipment

n General electronics

TBU-DF Series - TBU

High-Speed Protectors

*RoHS Directive 2015/863, Mar 31, 2015 and Annex.

Speciﬁcations are subject to change without notice.

Users should verify actual device performance in their speciﬁc applications.

The products described herein and this document are subject to speciﬁc legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

General Information

The TBU-DF Series of Bourns

TBU

products are low capacitance dual bidirectional high-speed Electronic

Current Limiters (ECLs), constructed using MOSFET semiconductor technology, and designed to protect

against faults caused by short circuits, overvoltage transients and faults in battery cells, up to rated limits.

The TBU

high-speed protector placed in the system circuit will monitor the current with the MOSFET detec-

tion circuit triggering to provide an effective barrier behind which sensitive electronics will not be exposed to

large voltages or currents during transient events.

The TBU

device is provided in a surface mount DFN package and meets industry standard requirements

such as RoHS and Pb Free solder reow proles.

TBU

Device

Line 1 I/O Line 1 I/O

Line 2 I/O Line 2 I/O

Absolute Maximum Ratings (@ T

= 25 °C Unless Otherwise Noted)

Symbol Parameter Part Number Value Unit

imp

Peak impulse voltage withstand with duration less than 10 ms

TBU-DF055-xxx-WH

TBU-DF085-xxx-WH

550

850

rms

Continuous A.C. RMS voltage

TBU-DF055-xxx-WH

TBU-DF085-xxx-WH

250

425

Operating temperature range -55 to +125 °C

stg

Storage temperature range -65 to +150 °C

amax

Maximum Ambient Temperature +125 °C

*RoHS COMPLIANT

LEAD FREE

*RoHS COMPLIANT

VERSIONS

AVAILABLE

LEAD FREE

VERSIONS ARE

RoHS COMPLIANT*

Electrical Characteristics (@ T

= 25 °C Unless Otherwise Noted)

Symbol Parameter Part Number Min. Typ. Max. Unit

trigger

Current required for the device to go from operating state to

protected state

TBU-DFxxx-050-WH

TBU-DFxxx-300-WH

TBU-DFxxx-500-WH

300

500

450

750

100

600

1000

device

Series resistance of

the TBU

device

imp

= 550 V I

trigger

(min.) = 50 mA

imp

= 550 V I

trigger

(min.) = 300 mA

imp

= 550 V I

trigger

(min.) = 500 mA

imp

= 850 V I

trigger

(min.) = 50 mA

imp

= 850 V I

trigger

(min.) = 300 mA

imp

= 850 V I

trigger

(min.) = 500 mA

TBU-DF055-050-WH

TBU-DF055-300-WH

TBU-DF055-500-WH

TBU-DF085-050-WH

TBU-DF085-300-WH

TBU-DF085-500-WH

Ω

match

Package resistance matching of the TBU

device #1 - TBU

device #2 +0.5

Ω

block

Time for the device to go from normal operating state to protected state 1 µs

Current through the triggered TBU

device

with 50 Vdc circuit voltage 0.5 mA

reset

Voltage below which the triggered TBU

device will transition to normal operating state 12 16 20 V

th(j-a)

Junction to ambient - FR4 using JESD51-3 board 125 °C/W

th(j-a)

Junction to ambient - FR4 using JESD51-7 board 50 °C/W

F5530

53802

Environmental Characteristics

Parameter Value

Moisture Sensitivity Level 1

ESD Classication (HBM) 1B

WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Summary of content (7 pages)

PAGE 1
T PL IA N Features Applications n Overcurrent protection n Exposed sense and data lines n Blocks surges up to rated voltage limit n Factory automation n High-speed performance n Protection modules and dongles n Small SMT package n Process control equipment n RoHS compliant* n Test and measurement equipment *R oH S CO M n Superior circuit protection FR EE F 53850530 2 n RS-485 interfaces LE AD n General electronics TBU-DF Series - TBU® High-Speed Protectors General Information Ro VE LE
PAGE 2
TBU-DF Series - TBU® High-Speed Protectors Reference Application Basic TBU Operation The TBU devices are general use protectors used in a wide variety of applications, including telecommunications, industrial communications and automotive battery management systems. The maximum voltage rating of the TBU® device should never be exceeded. Where necessary, an OVP device should be employed to limit the maximum voltage.
PAGE 3
® 3312 - 2Series mm SMD Potentiometer TBU-DF - TBUTrimming High-Speed Protectors Performance Graphs Normalized Itrigger vs. Temperature Typical V-I Characteristics 1.8 ITRIP 1.6 Normalized ITrigger CURRENT VRESET VOLTAGE TYPICAL TRIGGER CURRENT 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -55 -35 -15 5 25 45 65 85 105 125 Temperature (°C) Normalized Resistance vs. Temperature Power Derating Curve 2.
PAGE 4
TBU-DF Series - TBU® High-Speed Protectors Product Dimensions TOP VIEW G SIDE VIEW 2 K D B L 4 5 6 3 2 1 J A XXXXX YWWLL PIN 1 INDICATOR F E C SIDE VIEW 1 H MM (INCHES) DIMENSIONS: Dim. A B C D Min. 5.40 (.213) 6.40 (.252) 0.80 (.031) 0.00 (.000) E F G H I J K L 1.90 (.075) 1.75 (.069) 0.65 (.026) 0.70 (.028) 0.30 (.012) 0.25 (.010) 0.75 (.030) Nom. 5.50 (.217) 6.50 (.256) 0.90 (.035) -0.20 REF.F (.008) ....... 2.00 (.079) 1.85 (.073) 0.70 (.028) 0.80 (.031) 0.35 (.014) 0.30 (.
PAGE 5
TBU-DF Series - TBU® High-Speed Protectors Recommended Pad Layout TBU® High-Speed Protectors have a 100 % matte-tin termination finish. For improved thermal dissipation, the recommended layout uses PCB copper areas which extend beyond the exposed solder pad. The exposed solder pads should be defined by a solder mask which matches the pad layout of the TBU® device in size and spacK ing.
PAGE 6
TBU-DF Series - TBU® High-Speed Protectors Packaging Specifications P0 t B A D E P2 TOP COVER TAPE N F D W XXXXX YWWLL C B0 R K0 D1 A0 EMBOSSMENT P G (MEASURED AT HUB) USER DIRECTION OF FEED QUANTITY: 3000 PIECES PER REEL A Min. 328.5 (12.93) Min. 5.75 (0.224) Min. 1.05 (0.041) Min. 15.7 (0.618) A0 K0 W Max. 331 (13.05) Min. 2.0 (0.079) Max. 5.95 (0.234) Min. 6.75 (0.266) Max. 1.25 (0.049) Min. 7.9 (0.311) B0 P B Max. 2.4 (0.094) Max. 6.95 (0.274) Min. 1.5 (0.059) Max. 8.
PAGE 7
Legal Disclaimer Notice This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and its affiliates (collectively, “Bourns”). Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change without notice. Users should check for and obtain the latest relevant information and verify that such information is current and complete before placing orders for Bourns® products.