Features n Formerly a This series is currproduct ently available but not recommended for new designs. n Miniature Thermal Cutoff (TCO) device The Model AA Series is a possible n High current type replacement. n Optimal corrosion resistant properties n Smallerbody size: L5.4 x W3.2 x H0.89 mm n Overtemperatureand overcurrent protection for lithium polymer and prismatic cells n Wide range of temperature options KCA Series A-Type Breaker(Thermal Cutoff Device) RatingsRatings Model Specification KCA72AB0 KCA77AB0 KCA82AB0 KCA85AB0 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 DC12V / 25 A, 6000 cycles Maximum Breaking Current DC5V / 60 A, 100 cycles Maximum Voltage DC28V / 25 A, 100 cycles Minimum Holding Voltage 2 V 25 C for 1 minute Maximum Leakage Current 200 mA max. 25 C Resistance 5 milliohms max. Product Dimensions Agency Recognition 2.9 0.1 5.4 0.1 Description (.114 .004) (.213 .004) 2.9 0.1 UL, cUL File Number: E215638 (.114 .004) 0.1 0.01 (.004 .0004) TUV File Number: R50305080 0.89 0.05 How to Order 2.3 0.1 2.3 0.1 (.035 .002) (.091 .004) (.091 .004) KCA 77 A B 0 3.2 0.1 MM DIMENSIONS: Series Designator (.126 .004) (INCHES) Trip Temperature (5 C) 72 82 77 85 Arm Material Product Structure A = Cu Alloy, High Current Type Terminal Type COVER COVER PLATE ARM (with/without Projection & Terminal Length) ARM TERMINAL CONTACT Manufacturer s Internal Code PROJECTION PROJECTION PTC BASE BIMETAL DISC BASE TERMINAL AVAILABLE WITH AND WITHOUT PROJECTIONS. * 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 900or less ppm (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. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific disclaimers as set forth on the last page of this document,www.bourns.com/legal/disclaimer.pdf and at . *RoHS COMPLIANT & **HALOGEN FREE *RoHS COMPLIANT LEAD FREE LEAD FREE VERSIONS ARE RoHS COMPLIANT*Applications Battery cell protection for: n Notebook PCs n Tablet PCs n Smart phones n Mobile phones KCA Series A-Type Breaker (Thermal Cutoff Device) Typical Performance Current vs. Temperature Curves KCA72ABO (Low 67 C average) 22 KCA77ABO (Low 72 C average) 21 20 KCA82ABO (Low 77 C average) 19 18 KCA85ABO (Low 80 C average) 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 20 30 40 50 60 70 80 Temperature (C) 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. Operation NORMAL CIRCUIT CURRENT EXCESSIVE CURRENT AND/OR HEAT CIRCUIT AFTER OPENING VERY LOW CURRENT 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 disclaimers as set forth on the last page of this document,www.bourns.com/legal/disclaimer.pdf and at . Current (A)