Battery Mini-Breakers Datasheet MHP-TAC Series Breakers (Thermal Cutoff Devices) Metal Hybrid PPTC RoHS Description The new Metal Hybrid PPTC breaker, MHP-TAC, offers higher voltage rating (12VDC) and smaller size than typical MHP-TAM breakers. MHP-TAC helps to meet the battery safety requirements of higher-capacity Lithium (Ion) Polymer and Prismatic batteries found in most mobile devices such as laptop PCs, tablets, and smart phones. MHP technology connects a bimetal protector in parallel with a Polymeric Positive Temperature Coefficient (PPTC) device. The PPTC device is to act as a heater and to help keep the bimetal latched until the fault is removed. The resulting MHP-TAC helps to provide resettable overtemperature protection. Features High voltage rating Compact size (L: 4.75mm x W: 2.8mm x H: Overtemperature and 0.8mm) allows for ultra thin Additional Information overcurrent protection for battery Lithium (Ion) Polymer and pack designs Prismatic cells Evaluated to UL 60730-1, UL Multiple activation 60730-2-9, CAN/CSA E60730- temperature ratings 1, CAN/CSA E730-2-9, IEC (72C, 77C, 82C, 85C, and 60730-1 and 90C) IEC 60730-2-9 Resources Accessories Samples Applications Circuit Diagram Battery cell protection for Lithium Polymer and Prismatic cells used in: Notebook PCs Ultra-books Tablets Smart Phone Battery-powered portable devices Agency Approvals Agency Agency File Number E349829 DK-75944-UL Typical Electrical Ratings Part Description MHP-TAC15-12-72N MHP-TAC15-12-77N MHP-TAC15-12-82N MHP-TAC15-12-85N MHP-TAC15-12-90N Operation Temperature 72C+/-5C 77C+/-5C 82C+/-5C 85C+/-5C 90C+/-5C Ordering Part Number RF4780-000 RF4781-000 RF4782-000 RF4783-000 RF4784-000 Reset Temperature 40C 40C 40C 40C 40C Contact Rating DC 12V/25A, 6000 Cycles Maximum Breaking Current DC 5V/80A, 100 Cycles Minimum Hold Voltage 3V Maximum Leakage Current 150mA 25C Hold Current 15A 25C Resistance 5 milliohms Max. Operating Temperature Range -30~100C 2021 Littelfuse, Inc. 1 Specifications are subject to change without notice. Revised: GD. 09/03/21Battery Mini-Breakers Datasheet MHP-TAC Series Breakers (Thermal Cutoff Devices) Metal Hybrid PPTC Part Description MHP-TAC6-12-72N MHP-TAC6-12-77N MHP-TAC6-12-82N MHP-TAC6-12-85N Operation Temperature 72C+/-5C 77C+/-5C 82C+/-5C 85C+/-5C Ordering Part Number RF4788-000 RF4789-000 RF4790-000 RF4791-000 Reset Temperature 40C 40C 40C 40C Contact Rating DC 12V/12A, 6000 Cycles Maximum Breaking Current DC 5V/40A, 100 Cycles Minimum Hold Voltage 2V Maximum Leakage Current 150mA 25C Hold Current 6A 25C Resistance 15 milliohms Max. Operating Temperature Range -30~100C Precautions for Electrical Characteristics Precautions for Rating a. Device electrical characteristics may change depending on a. The power supply voltage must be less than the rated voltage installation conditions. Users should independently evaluate the of the device. Operation above the voltage rating may result in suitability of and test each product in their own application. device damage, smoking or flame. b. If any terminal or lead extensions are added to the device, b. Designs must be selected in such a manner that the device hold especially in the case of high current discharging, the device current is higher than the normal current value in the circuit and performance may be negatively impacted due to variations that the device trip current is lower than the abnormal current in welding methods or materials. Please avoid designs that value. Selecting device hold current and trip current values that might cause heat to be generated around the joints of the lead are too low for the application may interrupt the circuit under extensions or on the extended terminals. normal usage conditions. c. SMT solder reflow, wave-soldering and manual soldering irons are c. This product should not be used in an application where the not permitted. maximum interrupt current can be exceeded in a short circuit condition. d. The devices are intended for protection against damage caused by occasional over current or over temperature fault conditions and should not be used when repeated fault conditions or prolonged trip events are anticipated. e. The devices may not perform as specified if mechanical pressure is added while the device is in the tripped state or exposed to temperature conditions over 100C. Dimensions 1.2 1.2 B D A E Cover Disc Notes: Unspecified dimensions, tolerance should be +/-0.1mm Dimensions in brackets are for reference Dimple Base Contact PPTC Arm Dimple (Optional) Terminal Terminal (Optional) A B C D E Unit = mm MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX 4.65 4.85 0.75 0.85 2.7 2.9 3.1 3.3 3.1 3.3 2021 Littelfuse, Inc. 2 Specifications are subject to change without notice. Revised: GD. 09/03/21 (.15) 2.0 0.1 0.10.01 1.2 0.10.01 1.2 0.1 (.15) C