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Mini-Breakers (Miniature Thermal Cuā€‹toff Devices)

Mini-Breakers (Miniature Thermal Cut Off Devices)
Specifications

Thermal Cutoff (TCO) devices, such as Bourns® Mini-Breakers, are utilized as safety measures to help prevent heat and fires produced by excess current, most notably in lithium-ion batteries. These products are used to safeguard batteries in electronic devices such as notebooks, PCs, tablets, digital cameras, and smartphones.

The trip temperature of the mini-breaker is a critical parameter for battery packs, and it is designed with the ability to target certain trip temperature values.

The component has UL and TÜV safety standard certifications and also uses environmental protection measures all around the globe. Bourns® Mini-Breakers are self-preserving devices that are intended to remain tripped (operated) at abnormal temperatures and then recover when power is turned off and the temperature returns to a safe level. When compared to polymer PTCs and temperature fuses used for the same applications, this enables protection at lower temperatures.

Obsolete Products marked with this symbol are currently available, although not recommended for new designs.

Product Series
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Series Photo Data Sheet Technology Description Design Files Engineering Buy Now
AA AA_part AA AA Series Breaker Model AA72AB0, AA77AB0, AA82AB0 and AA85AB0
Very High Current Series
Downloads Buy
AC AC_part AC AC Series Breaker Model AC72ABD, AC77ABD, AC82ABD, AC85ABD and AC90ABD
Very High Current, Low Impedance Series
Downloads Buy
AD AD AD Series Breaker Model AD Series
Axial Leaded (Weldable), High Current Series AEC-Q200 Tested, Automotive Grade, +55 to +150 Ā°C Trip Temperature
Downloads Buy
HC Komatsuliteā„¢ HC Series Breakers HC HC Series Breaker Model HC72AY-1, HC77AY-1, HC82AY-1, HC85AY-1 and HC90AY-1
Standard Package / High Current
Buy
(HC7)

Buy
(HC8)

Buy
(HC9)
LC Komatsuliteā„¢ LC Series Breaker LC LC Series Breaker Model LC72AY-1, LC77AY-1, LC82AY-1 and LC85AY-1
Standard Package / Low Current
Buy
(LC7)

Buy
(LC8)
NR Komatsuliteā„¢ NR Series A-Type and C-Type Breaker NR NR Series Breaker Model NR72AB0, NR77AB0, NR82AB0, NR85AB0, NR72CB0, NR77CB0, NR82CB0 and NR85CB0
Miniature Package / High & Low Current
Downloads Buy
(NR7)

Buy
(NR8)
NX NX NX Series Breaker Model NX77ABB, NX82ABB, NX85ABB, NX90ABB,
NX77A1B, NX82A1B, NX85A1B and NX90A1B
Miniature Package/High Current
Downloads Buy
SA SA-S_part SA SA Series Surface Mount Breaker Model SA72SB0, SA77SB0, SA82SB0 and SA85SB0
Surface Mount / High Current
Buy
SCxxAAA SCxxAAA_part SCxxAAA SC Series Surface Mount Breaker Model SC72AAA, SC77AAA, SC82AAA, and SC85AAA
Surface Mount w/1.07 Ā± 0.05 mm Body Thickness
Downloads Buy
SCxxAAB SCxxAAB_part SCxxAAB SC Series Surface Mount Breaker Model SC72AAB, SC77AAB, SC82AAB, and SC85AAB
Surface Mount w/0.94 Ā± 0.05 mm Body Thickness
Downloads Buy
SD SD SD Series Breaker Model SD Series
Surface Mount (SMD), High Current Series AEC-Q200 Tested, Automotive Grade, +55 to +150 Ā°C Trip Temperature
Downloads Buy
SW Bourns Model SW Series SW Model SW70AAB Surface Mount Breaker Model SW70AAB
Surface Mount w/0.94 Ā± 0.05 mm Body Thickness/
Automatic Reset
Downloads Buy
Model/Datasheet Photo MSL Soldering Profiles Packaging Label Terminal CofC 3rd Party Test Reports MDS China RoHS
FileTypeSizeUploaded onDownload
Protecting High Speed Communication PortsPDF843.57 KB28 May, 2015 Download
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Usage


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https://www.youtube.com/embed/Nm_DJI66OI4

Bourns® Model AMS22 and AMM20 Programmer Systems

https://www.youtube.com/embed/e0LD62lj5xI

Bourns® Model AMS22 Demo

https://www.youtube.com/embed/nEB-WvEg7HA

Bourns® Model AMM20 Demo

https://www.youtube.com/embed/JfhRGnoSB3Q

Bourns® Model PWR220T

https://www.youtube.com/embed/0g-4yO34LfM

Bourns® Automotive Steering Sensors

https://www.youtube.com/embed/BS8zGqggp7U

Bourns® Pro Audio Components

https://www.youtube.com/embed/Gfielg2zKWQ

Bourns® Model 82 Vintage Premium Guitar Potentiometer

https://www.youtube.com/embed/PDyFhNtQ4us

Bourns Soldering Tips

https://www.youtube.com/embed/cZFbV1oijh4

Bourns Push-Pull Switch Guitar Application

https://www.youtube.com/embed/nRD6kc-NEtQ

Bourns Pickguard Upgrade Application

https://www.youtube.com/embed/NF-FN90Tkmk

Bourns Blend-Balance Bass Guitar Application

https://www.youtube.com/embed/HZI3tmGyOcw

Helpful Tips for Installing Guitar Potentiometers

https://www.youtube.com/embed/adTlZytoXgE

Bourns® Pro Audio Standard and Premium Guitar Potentiometers - Part 3: Grounding and Soldering

https://www.youtube.com/embed/smoO4Ytp4ec

Bourns® Pro Audio Standard and Premium Guitar Potentiometers - Part 2: Lubrication and Wear

https://www.youtube.com/embed/6uyti330_-4

Bourns® Pro Audio Standard and Premium Guitar Potentiometers - Part 1: Elements and Contacts

https://www.youtube.com/embed/x5XJVXOlL5Y

Bourns® Model 82 Guitar Potentiometer Factory Tour

https://www.youtube.com/embed/hEgygGlBDPg

Bourns® Overload Protection of Offline Flyback Converter

https://www.youtube.com/embed/UJ3rlY5K1bA

Bourns AEC-Q200 Competency

https://www.youtube.com/embed/euXfej62BFA

Bourns® Resettable Fuses - Multifuse® PPTC

https://www.youtube.com/embed/Y37ZDjIBpKw

Bourns® AA Series Mini-Breaker (Miniature Thermal Cutoff Device)

https://www.youtube.com/embed/28CFXzOnadU

Bourns Protecting Li-Ion Batteries with Thermal Cut Off Devices

https://www.youtube.com/embed/LBNex6kh3m0

Bourns Battery Management

https://www.youtube.com/embed/W0BkHB1unD8

Bourns® FLAT® Technology Gas Discharge Tube (GDT) Surge Arrestors

https://www.youtube.com/embed/v6D39knjJ30

Bourns® RS-485 Evaluation Board Video

https://www.youtube.com/embed/teaVJbITCng

A Brief Introduction to Bourns® TBU® High Speed Protectors

https://www.youtube.com/embed/8cKyOytCv0M

Introducing Bourns® GMOVā„¢ Components

https://www.youtube.com/embed/Eh3vfn1KAX8

Bourns® Environmental Sensors

https://www.youtube.com/embed/mbSBI5XLdB8

A Brief Introduction to RS-485 Evaluation Board 1

https://www.youtube.com/embed/nCloWgsLah4

Overtemperature Protection for USB Type-C Cables

https://www.youtube.com/embed/6GSSjDPV9So

Bourns® PQ Series Inductors

https://www.youtube.com/embed/OJD5OoJSNPs

Bourns® SM41126EL Transformer

https://www.youtube.com/embed/GbfNc3X5WpE

Bourns® Sensor Capabilities

https://www.youtube.com/embed/xEfveaks8V4

Bourns Magnetic Capabilities

https://www.youtube.com/embed/UuVEEXet3SM

Bourns® IsoMOVā„¢ Hybrid Protector

https://www.youtube.com/embed/MwL6m0FqEKg

Bourns - Surge Suppression Component Superimposed With Live AC

https://www.youtube.com/embed/NweconkUlyA

Surging single MOV vs 2 in Parallel

https://www.youtube.com/embed/x70Wi_vgiYs

Demonstration of Universal AC Power Protection Solution on 120 Vac Line

https://www.youtube.com/embed/uud7z6JqXpo

Temporary Overvoltage Demo on IsoMOV M5-275

https://www.youtube.com/embed/wUqQ-cqc4o8

4030 Test Set

https://www.youtube.com/embed/t6VyHyNoxcY

Bourns Webinar: Magnetics Component Design Considerations for SMPS Applications (SiC and GaN)

https://www.youtube.com/embed/3U9drK0vxws

Bourns Webinar: Power & Signal Magnetics Solutions in Battery Management Systems

https://www.youtube.com/embed/P4vQ2WIBkbs

Bourns Webinar: Solutions for Low Power Conversion Drivers/Flyback Topology

https://www.youtube.com/embed/XFOz5FF48dA

Bourns Webinar: UL/IEC 62368-1 Got You Down? IsoMOVā„¢ to the Rescue!

https://www.youtube.com/embed/hvcnul-xoQM

Bourns Webinar: Improving Battery Management Systems with High Accuracy Shunt Current Measurement

https://www.youtube.com/embed/6-5TcJx2pHw

Bourns Webinar: Latest BMS Design Solutions to Enhance Safety & Extend Battery Life

https://www.youtube.com/embed/bXV4OQjGSoU

Training: Bourns® Model CSS Series Current Sense Resistors

https://www.youtube.com/embed/mmL5zo6ctRE

Training: Bourns® Current Sense Resistors

https://www.youtube.com/embed/r7r0t0wmZWw

Training: Bourns® Power Resistors

https://www.youtube.com/embed/7OMppZzrdiM

Training: Bourns® Model AMM20B Non-Contacting Multiturn Rotary Position Sensors

https://www.youtube.com/embed/BsmGkZCSoXk

Training: Bourns® AMS22S Non-Contacting Analog Rotary Position Sensors

https://www.youtube.com/embed/MPj42VCMq1U

Training: Bourns® SRN Series Semi-Shielded Power Inductors

https://www.youtube.com/embed/qpnYLei_6n0

Training: Bourns® Model PWR263S-20 Fixed Resistor

https://www.youtube.com/embed/6ZqpjH8_1RU

Training: Bourns® FW Fusible Wirewound Resistor

https://www.youtube.com/embed/YKzAgeN2sa0

Training: Bourns® Magnetics Overview

https://www.youtube.com/embed/9DKj0rHayQE

Training: Bourns® Model AMS22B Non-Contacting Analog Rotary Position Sensor

https://www.youtube.com/embed/mLJb9i8PR_c

Training: Bourns® Model EMS22 Non-Contacting Magnetic Encoders

https://www.youtube.com/embed/j--IuFGVrNw

Training: Bourns® Model AMS22U Non-Contacting Analog Rotary Position Sensors

https://www.youtube.com/embed/HXnVnYTyAtA

Training: Bourns® Singlfuseā„¢ SMD Fuses

https://www.youtube.com/embed/eBbFmpK8FDU

Training: Bourns® BPS240 Humidity Sensor

https://www.youtube.com/embed/t-c1pHyijp4

Training; Bourns® SinglFuseā„¢ SMD Fuses - AEC-Q200-Equivalent Compliant

https://www.youtube.com/embed/NBd779BDNT4

Training: Bourns® GDT25 Next Generation 2-Electrode Gas Discharge Tube Arrestor

https://www.youtube.com/embed/IKzX6t1zyPY

Training: Bourns® Mini-Breakers (Miniature Thermal Cut Off Devices)

https://www.youtube.com/embed/AGH2Hvbs7bA

Training: Bourns® 1202 Series Type 1 Hybrid SPD

https://www.youtube.com/embed/YNJLq_18Pbw

Training: Bourns® IsoMOVā„¢ Hybrid Protection Component Product Training Module

https://www.youtube.com/embed/MH1IGkZE7oI

Training: Bourns® TBU® High-Speed Protectors (HSP)

https://www.youtube.com/embed/fymZOv0Bp7g

Training: Bourns® Model 3382 Rotary Position Sensor Training

https://www.youtube.com/embed/VDXAtPDtcrg

Training: Bourns® Multifuse® MF-RM Series

https://www.youtube.com/embed/NLFeFe-tX4U

Training: Bourns® Polymeric Thermal Cutoff (P-TCO) Device

https://www.youtube.com/embed/6oMlO_A8rLo

Training: Bourns® Transient Current Suppressor (TCSā„¢) High-Speed Protectors (HSPs)

https://www.youtube.com/embed/V6CfK8xPBAM

Training: Bourns® Multifuse® PPTC Resettable Fuses

https://www.youtube.com/embed/yuDDvzJV5jc

Training: Bourns® ESD Protection Devices

https://www.youtube.com/embed/47i6uPYaXvc

Training: Bourns® Pressure Sensors

https://www.youtube.com/embed/iuus5evFxJI

Training: Bourns® Power Transient Voltage Suppressor (PTVS) Diodes

https://www.youtube.com/embed/v6jeOjwF0tg

Training: Bourns® Model HCT Transformer

https://www.youtube.com/embed/ZxsWSn5Tqcg

Training: Bourns® Model 2051 Series Gas Discharge Tube (GDT)

https://www.youtube.com/embed/JsxH4eQlDrc

Training: Bourns® T-Series Fast Acting GDTs

https://www.youtube.com/embed/EoMwFN8tThs

Training: Bourns® Gas Discharge Tubes with FLAT® Technology

https://www.youtube.com/embed/o5DEqA1a7Ic

Bourns Webinar: Push-Pull Topology Highlights and Bourns Solutions for Low Power Conversion Drivers

https://www.youtube.com/embed/ZN2Vl6BAi7A

Training: Bourns® Gas Discharge Tube Surge Arrestors

https://www.youtube.com/embed/4rtsti1x74E

Training: Bourns® GMOVā„¢ Hybrid Overvoltage Protection Component

 

Please visit the Thermal Cutoff Devices (TCOs) technical library for current publications.

We also offer online product training for Mini-breakers.

You may order one of our Mini-breaker design kits.

Have a look at the Mini-Breakers (SPICE, 3D, etc.) we have to offer. Choose "Circuit Protection, Mini-Breakers (Miniature Thermal Cutoff Devices)" from the drop down menu.

Conflict Mineral Source Reporting for Mini-breakers:

  • Mini-breakers (HC Series) CMRT
  • Mini-breakers (LC Series) CMRT
  • Mini-breakers (NR Series) CMRT
  • Mini-breakers (AA Series) CMRT
  • Mini-breakers (AC Series) CMRT
  • Mini-breakers (SA Series) CMRT
  • Mini-breakers (SC Series) CMRT