Battery Mini-Breakers
Metal Hybrid PPTC > MHP Series
MHP-TAC Series Breaker
RoHS
Description
The new Metal Hybrid PPTC device, MHP-TAC, offers
higher voltage rating (12VDC) and smaller size than typical
MHP-TAM devices. 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 PC’s, 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
Circuit Diagram
• Miniature Thermal Cutoff (TCO) device
• High voltage rating
• Overtemperature and overcurrent protection for
Lithium (Ion) Polymer and Prismatic cells
• Multiple activation temperature ratings
(72°C, 77°C, 82°C, 85°C, and 90°C)
• Compact size (L: 4.75mm x W: 2.8mm x H: 0.8mm)
allows for ultra thin battery pack designs
Applications
Battery cell protection for Lithium Polymer and Prismatic
cells used in:
• Notebook PCs
• Ultra-books
• Tablets
• Smart Phone
• E-cigarettes
• Battery-powered portable devices
Typical Electrical Ratings
Specification
MHP-TAC15-12-72
MHP-TAC15-12-77
MHP-TAC15-12-82
MHP-TAC15-12-85
MHP-TAC15-12-90
72°C+/-5°C
77°C+/-5°C
82°C+/-5°C
85°C+/-5°C
90°C+/-5°C
≥40°C
≥40°C
≥40°C
≥40°C
≥40°C
Operation Temperature
Reset Temperature
Contact Rating
Maximum Breaking Current
Minimum Hold Voltage
Maximum Leakage Current
Hold Current
Resistance
Operating Temperature Range
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/02/18
DC 12V/25A, 6000 Cycles
DC 5V/80A, 100 Cycles
3V
150mA@25°C
15A@25°C
5 milliohms Max.
-30~100°C
Battery Mini-Breakers
Metal Hybrid PPTC > MHP Series
Specification
MHP-TAC6-12-72
MHP-TAC6-12-77
MHP-TAC6-12-82
MHP-TAC6-12-85
72°C+/-5°C
77°C+/-5°C
82°C+/-5°C
85°C+/-5°C
≥40°C
≥40°C
≥40°C
≥40°C
Operation Temperature
Reset Temperature
Contact Rating
DC 12V/12A, 6000 Cycles
Maximum Breaking Current
DC 5V/40A, 100 Cycles
Minimum Hold Voltage
2V
Maximum Leakage Current
150mA@25°C
Hold Current
6A@25°C
Resistance
15 milliohms Max.
Operating Temperature Range
-30~100°C
Precautions for Electrical Characteristics
Precautions for Rating
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.
a. The power supply voltage must be less than the rated
voltage of the device. Operation above the voltage rating
may result in device damage, smoking or flame.
b. Designs must be selected in such a manner that the
device hold current is higher than the normal current value
in the circuit and that the device trip current is lower than
the abnormal current value. Selecting device hold current
and trip current values that are too low for the application
may interrupt the circuit under normal usage conditions.
c. This product should not be used in an application where
the 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 100°C.
1.2
1.2
B
E
0.1±0.01
0.1
(.15)
A
0.1
0.1±0.01
D
(.15)
C
1.2
1.2
2.0
Dimensions
Cover Disc
Notes:
• Unspecified dimensions, tolerance should be +/-0.1mm
• Dimensions in brackets are for reference
Dimple
(Optional)
A
Unit = mm
B
Base
Terminal
Contact
C
PPTC
Arm
Terminal
D
Dimple
(Optional)
E
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
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/02/18
Battery Mini-Breakers
Metal Hybrid PPTC > MHP Series
Current Vs. Temperature Curves
Part Marking System
Year Code - The last digit of the year. (2018 = 8)
Week Code
Day Code (Monday = 1, Tuesday = 2, etc.)
Product Type (See table below)
PRODUCT
CODE
MHP-TAC15-12-72
A
MHP-TAC15-12-77
B
MHP-TAC15-12-82
D
MHP-TAC15-12-85
E
MHP-TAC15-12-90
F
MHP-TAC6-12-72
a
MHP-TAC6-12-77
b
MHP-TAC6-12-82
d
MHP-TAC6-12-85
e
Application Environment
The current vs. temperature curve was derived from placing test samples in an oven at
25°C, 40°C, 60°C, 70°C, 75°C, and 80°C, increasing current flow through the sample at a
rate of 0.1 A/minute and recording the current value when the sample trips.
The device is intended to be used for applications which
are common for general electronic devices. Usage in
any of the special environments or conditions as listed
below may adversely impact the device performance and
therefore users should carefully consider conditions of use
of the end product and the potential impact on reliability
or performance when incorporating this device into any
design to carefully examine the actual performance and
reliability of the device.
Part Ordering Number System
• Environment where the devices are exposed to water,
oil, chemical solutions, and/or organic solvents.
MHP TAC 15 - 12 - 77 N
• Installation in an area close to a heat source or
adjacent to or near flammable objects such as
plastic wires.
TERMINAL TYPE
N: Non Dimple
(BLANK): With Dimple
NOMINAL ACTIVATION
TEMPERATURE
72, 77, 82, 85, 90
• Environment in which the device is constrained by
pressure, sealing or resin coating.
• Environment where water condenses on the device.
• Environment with salt air or with corrosive gas such as
CL2, H2S, NH3, SO2, and NOX.
CONTACT VOLTAGE RATING
• Environment with grit and dust and/or under direct
sunlight.
NOMINAL HOLD CURRENT
AT ROOM TEMPERATURE
• Environment outside of recommended operating
temperature.
PRODUCT GROUP
SERIES NAME
Packaging
Packaging Option
Quantity
Quantity & Packaging Code
20,000 pcs. Minimum
1000 pcs/bag
1 bag per inner box
20 inner box in 1 outer box
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/02/18
Battery Mini-Breakers
Metal Hybrid PPTC > MHP Series
Precautions for Rating
a. The power supply voltage must be less than or equal
to the rated voltage of the device. Operation above the
voltage rating may result in device damage, smoke or
flame.
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.
b. Designs must be selected in such a manner that the
device hold current is higher than the normal current
value in the circuit. Selecting device hold current that is
too low for the application may interrupt the circuit under
normal usage conditions.
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 100°C or in
temperature conditions under -30°C.
c. This product should not be used in an application where
the maximum short circuit current available exceeds the
rated maximum breaking current of the product.
Handling Precautions
a. The device is composed of plastic parts, please do not
clamp or dent the housing with a tool as this might cause
a resistance increase and product damage.
b. When welding product terminals or mounting the breaker
on battery (cell), please be careful not to apply excessive
bending, twisting or force on the product and terminals.
The excessive stress might cause a resistance increase or
product damage.
Please refer to following cautions.
• Do not apply more than 10N bend force to product.
(Fig. 1)
• Do not apply more than 1.5cN*m twist torque to the
product. (Fig. 2)
• Do not apply more than 20N deflection force to product.
(Fig. 3)
• Do not apply more than 2N force to the terminals.
(Fig. 4)
• Do not apply more than 0.6cN*m twisting torque to the
terminals. (Fig. 5)
• Do not bend the terminals more than 45° at the end.
(Fig. 6)
• Should not twist terminals more than 20°C with breaker
body fixed.
c. Product terminals can be welded using direct welding
and series welding methods. In either case, please use a
suitable Jig so that the device will not be subjected to the
stress conditions listed above.
d. Pull strength and detach strength of the terminal welds
are per user requirements. However, if the welding is
controlled by resistance, the measurement should be
made as close as possible to the weld point by a “4-point
clip method” using milliohm meter to ensure accuracy.
e. Please avoid putting the stress on the device, as listed
above, when a jig, fitting or additional welding process is
used. Please re-confirm the resistance value whenever a
new process is added.
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate
the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be
used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/02/18