SHORT FORM CATALOG
Littelfuse battery protection products offer engineers
enhanced design flexibility and the ability to
meet regulatory requirements.
BATTERY
DEVICES
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Battery Devices
Circuit Protection Devices for
Battery Application
OUR EXPERTISE
Littelfuse PolySwitch Circuit Protection began almost 40 years ago, pioneering the field
of resettable PPTC (polymeric positive temperature coefficient) technology with our
PolySwitch product line. Today our extensive product portfolio reflects our expertise
in developing different material platforms that help designers create safe and reliable
applications.
BATTERY PROTECTION PRODUCTS
Our devices for battery protection include hybrid MHP-TA devices, PolySwitch PPTC
strap and disc devices, low rho SMD devices and surface-mount fuses. By drawing upon
our long history in materials science and customer knowledge, our products respond
to evolving battery technologies to meet specific design requirements. As a result, our
battery protection products offer engineers enhanced design flexibility and the ability
meet regulatory requirements – all while helping them achieve energy-saving, space- and
cost-effective designs.
In choosing the appropriate battery circuit protection device, designers should consider
the requirements of the end use application, cell chemistry and cell geometry, in addition
to the relevant electrical specifications of each application.
Typical Battery Applications
BATTERY PACKS FOR:
• Mobile Phone and Smart Phones
• Tablet PCs
• Ultra-thin Notebooks
• Mobile Radios
• Digital Cameras
• Portable Media Players
CHARGE LINES FOR:
• Power Tools
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Battery Devices
Device Offering for Battery Protection
MHP-TAM Devices
P.4
PolySwitch Strap & Disc Devices
P.8
Low rho SMD Devices
P.22
Surface-mount Fuses
P.28
Application Cross Reference for Battery Devices
Protection
Application
Feature Phone
Cell
Capacity
< 2000mAH
< 1500mAH
1500 ~ 1650mAH
Device
Recommendation
Fuse Devices
Size 0402, 0603, 1206
Low rho Strap and SMD Devices
Low rho Strap and SMD Devices
Low rho Strap and SMD Devices
Low rho Strap Devices
Low rho Strap Devices
MHP-TA Devices
Disc
Typical
Hold Current
@ 25°C
5A*
1.9A
2.5A
3.1A
4.2A
6A
6A
15A
3A
Installation
Method
SMD
SMD / Laser /
Spot Welding
SMD / Laser /
Spot Welding
SMD /
Spot Welding
SMD / Laser /
Spot Welding
SMD / Laser /
Spot Welding
Laser /
Spot Welding
Crimping
Smart Phone
1700 ~ 2300mAH
2500 ~ 3100mAH
> 3100mAH
Tablet PC
Ultra-thin Notebook
Notebook
2000mAH ~ 5000mAH
2000mAH ~ 8000mAH
2200mAH ~ 3200mAH
* 5A is the maximum hold current for fuse device
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Battery Devices
MHP-TAM DEVICES
Helps Protect Ultra-Thin LiP / Prismatic Cells
The Metal hybrid PPTC devices with thermal activation (MHP-TA) offer the
necessary combination of low thermal cut-off temperatures, high hold-current
ratings and compact size required for protecting higher-capacity Lithium
Polymer (LiP) and prismatic batteries found in the latest tablet and ultra-thin
computing products.
The new MHP-TAM devices offer a 9V
DC
rating and a higher current rating than
typical battery thermal cutoff (TCO) devices.
Benefits
• Capable of handling voltages and battery charge rates
found in high-capacity LiP and prismatic cells used in
cutting-edge applications
• Helps provide resettable and accurate
overtemperature protection
• Compact size and thin form factor facilitates circuit
protection in ultra-thin battery pack designs
• Customization of welding leads available to facilitate
design
Features
• Two levels of hold current:
- Low current (nominal 6A hold current @25°C)
- High current (nominal 15A hold current @25°C)
• Multiple temperature ratings
- (72°C, 77°C, 82°C, 85°C, 90°C)
• Compact size (L:5.8mm x W:3.85mm x H:1.15mm)
Electrical Characteristics for MHP-TAM Devices (Typical)
Series
Model Number
Rating
[°C]
Nominal
Operation
Temperature
[°C]
Min
Max
Reset
Temperature
[°C]
Min
T
Reference Resistance
[mohms] 25°C
Typ
Max
MHP-TAM6 Series
Typical Electrical Rating
(25°C)
Max. Breaking Current
5V
DC
/40A (100 cycles)
Contact Rating
9V
DC
/12A (6000 cycles)
MHP-TAM15 Series
Typical Electrical Rating
(25°C)
Max. Breaking Current
5V
DC
/80A (100 cycles)
Contact Rating
9V
DC
/25A (6000 cycles)
MHP-TAM15-9-72
MHP-TAM15-9-77
MHP-TAM15-9-82
MHP-TAM15-9-85
MHP-TAM15-9-90
72
77
82
85
90
67
72
77
80
85
77
82
87
90
95
≥40
≥40
≥40
≥40
≥40
*≥7
*≥10
*≥10
*≥10
*≥10
2.5
2.5
2.5
2.5
2.5
5
5
5
5
5
MHP-TAM6-9-72
MHP-TAM6-9-77
MHP-TAM6-9-82
MHP-TAM6-9-85
72
77
82
85
67
72
77
80
77
82
87
90
≥40
≥40
≥40
≥40
≥7
≥10
≥10
≥10
10
10
10
10
15
15
15
15
* The minimum temperature differential between the actual operation temperature of the device and the reset temperature
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Battery Devices
Hold Current vs. Temperature Curves for MHP-TAM Devices (Typical)
10
9
8
7
MHP-TAM6 Series
A - MHP-TAM6-9-72
B - MHP-TAM6-9-77
C - MHP-TAM6-9-82
D
A
C
B
Current (A)
6
5
4
3
2
1
0
20
30
40
50
60
70
80
D - MHP-TAM6-9-85
Temperature (°C)
22
20
18
16
MHP-TAM15 Series
A - MHP-TAM15-9-72
B - MHP-TAM15-9-77
C - MHP-TAM15-9-82
E
D
A
C
B
Current (A)
14
12
10
8
6
4
2
0
20
D - MHP-TAM15-9-85
E - MHP-TAM15-9-90
30
40
50
60
70
80
Temperature (°C)
Dimensions and Mechanical Characteristics for MHP-TAM Devices
A
D
4-ø0.4
5.8
E
MHP-TAM Series:
Min
A
1.2 2.5
C
Max
11.4
1.15
3.85
2.8
2.8
10.9
-
3.75
2.6
2.6
2.5 1.2
B
C
D
B
0.7
0.10 0.01
0.1
(0.2)
0.7
0.10 0.01
0.1
(0.2)
E
Unless otherwise specified, all tolerances are
±0.1mm.
5
B
A
C
1.2
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D
E
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