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Document overview

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Technical content

Features

n Miniature Thermal Cutoff (TCO) device n High current capacity, low impedance n Overtemperature and overcurrent protection for lithium polymer and prismatic cells n Controls abnormal, excessive current virtually instantaneously, up to rated limits n Wide range of temperature options

Applications

Battery cell protection for: n Notebook PCs n Tablet PCs n Smart phones AA Series Breaker (Thermal Cutoff Device) * RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. ** Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less. Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. *RoHS COMPLIANT LEAD FREE *RoHS COMPLIANT **HALOGEN FREE LEAD FREE VERSIONS ARE RoHS COMPLIANT* Ratings Specification AA72AB0 AA77AB0 AA82AB0 AA85AB0 Trip Temperature 72 °C ± 5 °C 77 °C ± 5 °C 82 °C ± 5 °C 85 °C ± 5 °C Reset Temperature 40 °C min. Contact Rating DC9 V / 35 A, 1000 cycles Maximum Breaking Current DC5 V / 60 A, 100 cycles Maximum Voltage DC28 V / 35 A, 100 cycles Maximum Leakage Current 200 mA max. @ 25 °C Resistance 2 milliohms max. Agency RecognitionProduct Dimensions

Description

UL, cUL File Number: E215638 (UL 60730) TUV File Number: R50350207 (EN 60730-2-9) DIMENSIONS: MM (INCHES) How to Order AA 77 A B 0 Series Designator Trip Temperature (±5 °C)

  • 72
  • 77
  • 82
  • 85 Arm Material A = Cu Alloy High Current Type Terminal Type 1 = With Projection B = Without Projection Manufacturer’s Internal Code 1.22 ± 0.05 (.048 ± .002) 0.2 ± 0.01 (.008 ± .0004) 0.2 ± 0.01 (.008 ± .0004) 0.37 ± 0.1 (.015 ± .004) 0.1 (.004)4 PLCS. 0.5 (.004) DIA. 4 PLCS. REF. 6.95 ± 0.1 (.274 ± .004) NO OBJECT 2.7 ± 0.1 (.106 ± .004) 2.7 ± 0.1 (.106 ± .004) 0.2 (.008) MAX. 2.5 ± 0.1 (.098 ± .004) 0.7 ± 0.1 (.028 ± .004) 2.5 ± 0.1 (.098 ± .004) 3.75 ± 0.1 (.148 ± .004) 3.95 (.156)MAX. 0.7 ± 0.1 (.028 ± .004) 1.8 ± 0.1 (.071 ± .004) REF. 2.65 ± 0.1 (.104 ± .004) REF. 0.15 (.006)R 51216MA A 8 5 A B 0 0 0

Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. AA Series Breaker (Thermal Cutoff Device) Typical Performance The above curves were derived from placing test samples in an oven at 25 ℃, 40 ℃, 60 ℃ and 70℃, increasing current flow through the sample at a rate of 0.1 A/minute and recording the current value when the sample trips. Current vs. Temperature Curves Product Structure ARM TERMINAL COVER PLATE COVERBASE AVAILABLE WITH AND WITHOUT PROJECTIONS. PROJECTION BASE TERMINAL PROJECTION BIMETAL DISC ARM PTC CONTACT Circuit Diagram NORMAL CIRCUIT CIRCUIT AFTER OPENING Temperature (°C) Current (A) 20 30 40 50 60 70 80 AA72AB0ɹ(Low 67 °C average AA77AB0ɹ(Low 72 °C average AA82AB0ɹ(Low 77 °C average AA85AB0ɹ(Low 80 °C average

Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. AA Series Breaker (Thermal Cutoff Device) Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com EMEA: Tel: +36 88 520 390 • Email: eurocus@bourns.com The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com www.bourns.com Typical Part Marking Wiring Recommendations This is not a surface mount device for reflow soldering. Therefore, Ni tab wiring should be accomplished by either resistance or laser welding. Solder connections should be avoided. Standard Packaging Specifications X2715A AA77A10 DATE CODE: MONTH (1~9, X, Y, Z) DATE YEAR MACHINE NO. ROMAN NUMERAL (I, II, III, ETC.) or ARABIC NUMERAL (1, 2, 3, ETC.) = OKAYAMA FACTORY ALPHABET = SHIGA FACTORY MANUFACTURER’S TRADEMARK SPECIAL SPECIFICATIONS CODE TERMINAL TYPE MANUFACTURER’S INTERNAL CODE (ALPHANUMERIC CHARACTER) ARM MATERIAL (A = Cu ALLOY) TRIP TEMPERATURE - °C (72, 77, 82, 85) SERIES DESIGNATOR Application Temperature Range Storage Conditions 1) The breaker must be stored in the original packaging (plastic bag or carton) with the following conditions: ambient temperature of -10 to +40 °C, RH <75 % with no radical temperature change, direct sunshine, excessive vibration or shock. 2) Avoid storage locations where there is a possibility of generating corrosive gas such as from salt breeze, chlorine, hudrogen sulfide, ammonium, sulfide-oxidation, hydrogen chloride, acetate, etc. 3) Storage period should be no longer than 24 months from date of shipment.

Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. AA Series Breaker (Thermal Cutoff Device) Caution when using Breaker Before using the breaker, please fully read the DESIGN AND HANDLING CAUTIONS stated below to avoid breaker performance deterioration and/or damage to the breaker body or terminal. DESIGN CAUTIONS 1. Use within the electrical ratings specified in this data sheet. If used over the rating of voltage or current, ON-OFF life might be impacted and contact may deteriorate due to breaker arm damage. 2. If used over the electrical rating, the circuit may not open safely or operate properly. Please test your device for any abnormalities and confirm that the breaker will open the circuit safely in your device. 3. Mount the breaker on your device where heat is the highest in order to transfer it effectively to the breaker. 4. If the breaker is affixed with an adhesive (resin, etc.), fully test, evaluate and verify that the adhesive presents no negative effects on the breaker before proceeding. 5. After the breaker is mounted, affix it so that the breaker body and terminals will not move. If not affixed properly, breaker resistance could increase or contact could open due to stress during handling or vibration/shock during transportation. 6. Mount the breaker body and terminals in a straight and flat direction. If the body and terminals are mounted in a twisted condition, breaker resistance could increase or create body damage. 7. If breaker is to be resin-molded, test and evaluate the application to determine whether the breaker can be used effectively. 8. The breaker cannot be used as a repetitive ON-OFF thermostat. 9. The breaker is not washable. Do not wash. 10. The breaker is not designed or warranted for flow, reflow or hand-soldering applications. If such application is required, you will need to evaluate whether the breaker is suitable for your specific application. 11. When mounting and after mounting the breaker, do not apply supersonic vibration. Vibration and heat may cause breaker resistance to increase or may cause body damage. If you plan to apply supersonic vibration after mounting the breaker, you will need to evaluate whether the breaker is suitable for your specific application. The breaker is not designed or warranted to withstand supersonic vibration. 12. Do not use the breaker in the following environments: a) Water, oil, chemicals or organic solutions b) Direct sunlight, outdoor exposure, dust c) Dew condensation, allowing the breaker to get wet d) Salt breeze, chlorine, hydrogen sulfide, ammonium, sulfide-oxidation, hydrogen chloride, and anywhere there is a possibility of generating corrosive gas such as sulfurous acid gas e) Strong static electric charge or electromagnetic wave 13. The breaker is not designed or tested for, and should not be used in, aerospace, airplane, nuclear, military, life-sustaining medical and other related applications.