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Littelfuse

microSMD450LR Datasheet Preview

microSMD450LR Datasheet

Low Rho SMD

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PolySwitch® Resettable PTCs
Surface Mount > LoRho Series
Low Rho SMD Series
Agency Approvals
AGENCY
AGENCY FILE NUMBER
078165 *
E74889 *
R 72161796 *
* - See Electrical Characteristic Table for approved part numbers.
Description
PolySwitch® low resistivity SMD (surface-mount device) is
a versatile device well suited for general applications which
have space-constrained, low power dissipation and high
environmental reliability requirements.
The devices can help provide both overcurrent and
overtemperature protection for battery pack PCMs
(protection circuit modules), circuit PCBA and signal/power
I/O interface. The resettable feature ensures the device will
“Trip” and protect the application during the faults and yet
regain the functions once the error is removed.
Features
• Current ratings from 1.75
to 6.0A
• Maximum electrical
rating: 6VDC and short
circuit current 50A
• Halogen free
(Br≤900ppm,
Cl≤900ppm, and
Br+Cl≤1500ppm)
• Ultra low internal
resistance
• Automatic Reset
• RoHS Complaint,
lead-free and halogen
free
Applications
• Mobile and smart
phones
• Wearable devices
• Portable game console
• VR/AR head mount
display (HMD)
• Tablets and eBook
• Portable printer and
projector
• Li-Ion battery Powered
Mobile Devices
• USB Connection Ports
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/21/17




Littelfuse

microSMD450LR Datasheet Preview

microSMD450LR Datasheet

Low Rho SMD

No Preview Available !

PolySwitch® Resettable PTCs
Surface Mount > LoRho Series
Electrical Characteristics
Part Number
IH IT
(A) (A)
nanoSMDLR Series Size 3216mm/1206mils
nanoSMD175LR
1.75 5.00
nanoSMD200LR
2.00
9.50
nanoSMD270LR
2.70 6.30
nanoSMD350LR
3.50 6.30
nanoSMD380LR
3.80 8.00
nanoSMD400LR
4.00
8.00
nanoSMD450LR
4.50 10.00
nanoSMD500LR-D
5.00
10.00
nanoSMD550LR
5.50 11.00
nanoSMD600LR
6.00
12.00
microSMDLR Series Size 3225mm/1210mils
microSMD190LR
1.90 4.90
microSMD200LR
2.00
5.00
microSMD250LR-A
2.50 5.20
microSMD350LR-D
3.50 9.00
microSMD380LR
3.80 9.00
microSMD400LR
4.00
9.00
microSMD450LR
4.50 9.00
microSMD500LR
5.00
10.00
microSMD550LR
5.50 11.00
microSMD600LR
6.00
12.00
VMAX
(VDC)
IMAX
(A)
6 50
6 50
6 50
6 50
6 50
6 50
6 50
6 50
6 50
6 50
6 50
6 50
6 50
6 50
6 50
6 50
5 50
6 50
5 50
6 50
PD MAX
(W)
Max Time-to-Trip
(A) (S)
1.00 9.50
1.00
1.00 9.50
3.00
1.00 8.00
5.00
1.00 8.00
5.00
1.00 9.50 10.00
1.00 20.00
2.00
1.00 25.00
2.00
1.00 25.00
2.00
1.00 25.00
2.00
1.00 25.00
2.00
1.00 9.50
4.00
1.00 9.50
4.00
1.00 9.50
5.00
1.00 9.50 10.00
1.00 9.50 10.00
1.00 9.50 10.00
1.00 25.00
2.00
1.00 25.00
2.00
1.00 25.00
2.00
1.00 25.00
2.00
RMIN
(^)
0.008
0.006
0.005
0.004
0.004
0.004
0.002
0.002
0.002
0.002
0.006
0.006
0.005
0.0025
0.0025
0.0025
0.002
0.002
0.002
0.002
R1MAX
(v)
0.034
0.024
0.018
0.018
0.014
0.010
0.008
0.008
0.007
0.007
0.021
0.021
0.018
0.011
0.009
0.0099
0.008
0.007
0.0065
0.0063
Agency
Recognition
UL, CSA, TÜV
UL, CSA
UL, CSA, TÜV
UL, CSA, TÜV
UL
TÜV
UL, TÜV
UL, CSA, TÜV
LR2
UL,TÜV
UL, CSA
UL, CSA
UL, CSA
UL, CSA, TÜV
UL, CSA
UL,TÜV
UL, TÜV
UL
UL, TÜV
Temperature Rerating
Ambient OperatingTemperature
Part Number
-40°C -20°C
0°C
20°C
25°C 40°C 50°C 60°C
nanoSMDLR Series Size 3216mm/1206mils
nanoSMD175LR
3.00
2.60
nanoSMD200LR
3.60 3.20
nanoSMD270LR
4.00
3.50
nanoSMD350LR
5.50 4.80
nanoSMD380LR
5.75 5.15
nanoSMD400LR
5.80 5.20
nanoSMD450LR
6.69 6.00
nanoSMD500LR-D
7.40 6.60
nanoSMD550LR
7.96 7.19
nanoSMD600LR
8.50 7.80
microSMDLR Series Size 3225mm/1210mils
microSMD190LR
3.40 2.90
microSMD200LR
3.50 3.00
microSMD250LR-A
4.40 3.80
microSMD350LR-D
5.40 4.75
microSMD380LR
5.71 5.04
microSMD400LR
5.91 5.24
microSMD450LR
7.00 6.20
microSMD500LR
7.40 6.60
microSMD550LR
7.96 7.19
microSMD600LR
8.50 7.80
2.20
2.80
3.00
4.00
5.00
4.60
5.40
6.00
6.50
7.00
2.40
2.50
3.20
4.00
4.00
4.70
5.50
6.00
7.00
7.00
1.75 1.70 1.40 1.20 1.00
2.00 1.90 1.80 1.60 1.40
2.70 2.60 2.20 2.00 1.60
3.50 3.30 2.70 2.30 1.90
3.80 3.74 3.06 2.60 2.20
4.00 3.90 3.40 3.10 2.82
4.50 4.40 3.80 3.50 3.30
5.00 4.90 4.60 4.20 3.70
5.50 5.30 4.80 4.30 3.80
6.00 5.72 4.94 4.42 3.90
1.90 1.80 1.40 1.15 0.90
2.00 1.90 1.50 1.25 1.00
2.50 2.40 1.90 1.50 1.25
3.50 3.20 2.70 2.40 2.00
3.80 3.52 3.01 2.67 2.50
4.00 3.72 3.21 2.87 2.50
4.50 4.40 3.80 3.50 3.20
5.00 4.90 4.60 4.20 3.70
5.50 5.46 4.88 4.49 4.10
6.00 5.70 5.00 4.50 3.90
Note: The temperature rerating data is for reference only. Please contact Littelfuse technical support for detail temperature rerating information
70°C
0.80
1.20
1.40
1.60
1.90
2.52
2.75
3.30
3.40
3.50
0.65
0.75
1.00
1.70
2.00
2.20
2.75
3.30
3.50
3.50
80°C
0.60
1.00
1.20
1.40
1.60
2.23
2.35
3.00
3.10
3.20
0.40
0.50
0.65
1.35
1.66
1.86
2.35
3.00
3.20
3.10
85°C
0.50
0.80
1.10
1.30
1.50
2.10
2.16
2.80
2.90
3.00
0.28
0.38
0.50
1.20
1.49
1.69
2.16
2.80
3.00
2.90
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/21/17


Part Number microSMD450LR
Description Low Rho SMD
Maker Littelfuse
Total Page 7 Pages
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