Battery Mini-Breakers (Thermal Cutoff Devices) Metal Hybrid PPTC > MHP Series RoHS MHP-TAT18 Series Breaker Description The new Metal Hybrid PPTC device, MHP-TAT18, offers a 9VDC rating and a higher current rating than typical MHP- TAM devices. MHP-TAT18 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 to act as a heater and to help keep the bimetal latched until the fault is removed. The resulting MHP- TAT18 series helps to provide resettable overtemperature protection. Circuit Diagram Features High current capacity Compact size (L: 5.8mm with low resistance x W: 3.80mm x H: 1.15mm) allows for ultra- Overtemperature and thin battery pack designs overcurrent protection Evaluated to UL 60730-1 Multiple activation and UL 60730-2-9, CAN/ temperature ratings CSA E60730-1, CAN/CSA (72C, 77C, 82C, 85C, E730-2-9 and IEC 60730- 90C) 1 and IEC 60730-2-9. Applications Agency Approvals Battery cell protection for high-capacity Lithium Polymer Agency Agency File Number and Prismatic cells used in: E349829 Gaming PCs Notebook PCs DK-74156-M1-UL Ultra-book Tablets Battery-powered portable devices Typical Electrical Ratings Part Description MHP-TAT18-9-72N MHP-TAT18-9-77N MHP-TAT18-9-82N MHP-TAT18-9-85N MHP-TAT18-9-90N Operation Temperature 72C+/-5C 77C+/-5C 82C+/-5C 85C+/-5C 90C+/-5C Ordering Part Number RF4785-000 RF4668-000 RF4786-000 RF4629-000 RF4787-000 Reset Temperature 40C 40C 40C 40C 40C Hold Current 18A 25C Contact Rating DC 9V/30A, 6000 Cycles Maximum Breaking Current DC 5V/80A, 100 Cycles Maximum Open Voltage DC 28V/30A, 100 Cycles Minimum Hold Voltage 3V Maximum Leakage Current 200mA 25C Resistance 2.5 milliohms Max. Precautions for Electrical Characteristics: a. Device electrical characteristics may change depending on installation conditions. Users should independently evaluate the suitability of and test each product in their own application. b. If any terminal or lead extensions are added to the device, especially in the case of high current discharging, the device performance may be negatively impacted due to variations in welding methods or materials. Please avoid designs that might cause heat to be generated around the joints of the lead extensions or on the extended terminals. c. SMT solder reflow, wave-soldering and manual soldering irons are not permitted. 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/03/214 - 0.4 Battery Mini-Breakers (Thermal Cutoff Devices) Metal Hybrid PPTC > MHP Series Dimensions A B C D E Min Max Min Max Min Max Min Max Min Max 10.9mm 11.5mm 1.05mm 1.15mm 3.75mm 3.85mm 2.6mm 2.8mm 2.6mm 2.8mm A 5.8 D E C 0.7 0.7 B Notes: Unspecified dimensions, tolerance should be +/-0.1mm Dimensions in brackets are for reference Current Vs. Temperature Curves Part Marking System 30 28 26 24 22 Year Code 20 1 18 Week Code: 01~52 7 16 MHP-TAT18-9-90 (Typical Part) Day Code: 1~7 2 14 MHP-TAT18-9-85 (Typical Part) Assembly Machine Code: A~Z 12 3 MHP-TAT18-9-82 (Typical Part) Marking Machine Code: 1~9 MHP-TAT18-9-77 (Typical Part) 10 2 MHP-TAT18-9-72 (Typical Part) 8 H 6 5 Company Logo 20 25 30 35 40 45 50 55 60 65 70 75 Temperature (C) TAT 18-85 LF Nominal Activation Temperature The current versus temperature curve was derived from placing test samples in an oven at 72, 77, 82, 85, 90 25C, 40C, 60C, 65C, and 70C, increasing current flow through the sample at a rate of Nominal Hold Current at 0.1A/minute and recording the current value when the sample trips. Room Temperature Product Group 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/03/21 Current (A) 2.8 (0.2) 1.2 0.1 0.12 0.01 TAT18- 0.12 0.01 0.1 1.2 (0.2) 2.8
