MICROSMD400LR-2 [LITTELFUSE]
PTC RESET FUSE 6V 4A 1206;型号: | MICROSMD400LR-2 |
厂家: | LITTELFUSE |
描述: | PTC RESET FUSE 6V 4A 1206 |
文件: | 总7页 (文件大小:579K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
POLYSWITCH RESETTABLE DEVICES
Low Resistivity SMD Devices
The low resistivity SMD (surface-mount device) series
is well suited to space-constrained mobile applications.
The devices can help provide both overcurrent and
overtemperature protection for battery pack PCMs
(protection circuit modules) used in compact consumer
devices such as smartphones and MP3/MP4 media
players. In particular, the low resistivity SMD series helps
battery pack suppliers achieve their design goals and
simplify their installation methods.
The low resistivity SMD series comprises eleven devices.
In the model number descriptions, the “micro” prefix
refers to the 1210 form factor and the “nano” prefix refers
to the 1206 form factor.
BENEFITS
APPLICATIONS
• Helps save board space and power consumption,
and therefore costs, in space-constrained mobile
electronics
• Mobile and smart phones
• Media players (MP3/MP4)
• Digital still and video cameras
• Mini notebooks
• Are more compact in comparison with similar
offerings and are available in an industry-standard
form factor
• Tablets
• Can be assembled with a reflowable soldering
technique, as opposed to the spot welding process
required by many other components
• Maximum electrical rating: Voltage 6VDC and short
circuit current 50A
• Industry-standard form factor of 1210
(3.0mmx2.54mm, or 0.12inx0.10in), or 1206
(3.0mmx1.52mm; or 0.12inx0.060in)
• Useful for an operating current of 2A and above
• Useful for and packaged for surface mounting on
the PCB
FEATURES
• Agency recognition: UL, CSA, TÜV
• Small footprint
• RoHS compliant
• Halogen free
≥
≥
≥
(refers to: Br 900ppm, Cl 900ppm, Br+Cl 1500ppm)
• Fast time-to-trip
• Current ratings from 1.75 to 5.0A
RoHS Compliant, ELV Compliant
Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
147
HF
PolySwitch Resettable Devices
Radial-Leaded Devices
Table LR1 —Thermal Derating [Hold Current (A) at AmbientTemperature (°C)]
Maximum AmbientTemperature
Part
Number
-40ºC
-20ºC
0ºC
20ºC
25ºC
40ºC
50ºC
60ºC
70ºC
80ºC
85ºC
nanoSMDLR Series
Size 3216mm/1206mils
nanoSMD175LR
nanoSMD200LR
nanoSMD270LR
nanoSMD350LR
nanoSMD500LR
3.00
3.60
4.00
5.50
7.40
2.60
3.20
3.50
4.80
6.60
2.20
2.80
3.00
4.00
6.00
1.75
2.00
2.70
3.50
5.00
1.70
1.90
2.60
3.30
4.90
1.40
1.80
2.20
2.70
4.60
1.20
1.60
2.00
2.30
4.20
1.00
1.40
1.60
1.90
3.70
0.80
1.20
1.40
1.60
3.30
0.60
1.00
1.20
1.40
3.00
0.50
0.80
1.10
1.30
2.80
microSMDLR Series
Size 3225mm/1210mils
microSMD190LR
microSMD200LR
microSMD250LR
microSMD350LR
microSMD450LR
3.40
3.50
4.40
5.40
7.00
2.90
3.00
3.80
4.75
6.20
2.40
2.50
3.20
4.00
5.50
1.90
2.00
2.50
3.50
4.50
1.80
1.90
2.40
3.20
4.40
1.40
1.50
1.90
2.70
3.80
1.15
1.25
1.60
2.40
3.50
0.90
1.00
1.30
2.00
3.20
0.65
0.75
1.00
1.70
2.75
0.40
0.50
0.65
1.35
2.35
0.28
0.38
0.50
1.20
2.16
Figure LR1 —Thermal Derating Curve
Figure LR1
Table LR2 — Electrical Characteristics for low resistivity SMD Devices at
RoomTemperature
IH
IT
VMAX
IMAX
(A)
PD MAX
(W)
MaxTime-to-Trip
RMIN
R1MAX
Figure for
Dimensions
Part
Number
(A)
(A)
(VDC
)
(A)
(S)
(Ω)
(Ω)
nanoSMDLR Series
Size 3216mm/1206mils
nanoSMD175LR
nanoSMD200LR
nanoSMD270LR
nanoSMD350LR
nanoSMD500LR
1.75
2.00
2.70
3.50
5.00
5.00
6.00
6.30
6.30
10.00
6
6
6
6
6
50
50
50
50
50
1.00
1.00
1.00
1.00
1.00
9.50
9.50
8.00
8.00
25.00
1.00
3.00
5.00
5.00
2.00
0.008
0.006
0.005
0.004
0.002
0.034
0.024
0.018
0.018
0.008
LR2
LR2
LR2
LR2
LR2
microSMDLR Series
Size 3225mm/1210mils
microSMD190LR
microSMD200LR
microSMD250LR
microSMD350LR
microSMD450LR
1.90
2.00
2.50
3.50
4.50
4.90
5.00
5.20
9.00
9.00
6
6
6
6
5
50
50
50
50
50
1.00
1.00
1.00
1.00
1.00
9.50
9.50
9.50
9.50
25.00
4.00
4.00
5.00
10.00
2.00
0.006
0.006
0.005
0.0025
0.002
0.021
0.021
0.018
0.011
0.008
LR3
LR3
LR3
LR2
LR3
148
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
Halogen Free
RoHS Compliant, ELV Compliant
HF
PolySwitch Resettable Devices
Radial-Leaded Devices
Figures LR2-LR3 — Dimensions Figures
Figure LR2
Figure LR3
Table LR3 — Dimensions in Millimeters (Inches)
A
B
C
D
E
Part
Number
Figure
Min
Max
Min
Max
Min
Max
Min
Max
Min
nanoSMDLR Series
Size 3216mm/1206mils
3.00
(0.118)
3.43
(0.135)
0.50
(0.019)
1.00
(0.039)
1.37
(0.054)
1.85
(0.073)
0.25
(0.010)
0.75
(0.030)
nanoSMD175LR
nanoSMD200LR
nanoSMD270LR
nanoSMD350LR
nanoSMD500LR
—
—
—
—
—
LR2
LR2
LR2
LR2
LR2
3.00
(0.118)
3.43
(0.135)
0.50
(0.019)
1.00
(0.039)
1.37
(0.054)
1.85
(0.073)
0.25
(0.010)
0.75
(0.030)
3.00
(0.118)
3.43
(0.135)
0.50
(0.019)
1.00
(0.039)
1.37
(0.054)
1.85
(0.073)
0.25
(0.010)
0.75
(0.030)
3.00
(0.118)
3.43
(0.135)
0.50
(0.019)
1.00
(0.039)
1.37
(0.054)
1.85
(0.073)
0.25
(0.010)
0.75
(0.030)
3.00
(0.118)
3.43
(0.135)
0.50
(0.019)
0.80
(0.031)
1.37
(0.054)
1.85
(0.073)
0.25
(0.010)
0.75
(0.030)
microSMDLR Series
Size 3225mm/1210mils
3.00
(0.118)
3.43
(0.135)
0.50
(0.019)
1.00
(0.039)
2.35
(0.092)
2.80
(0.110)
0.25
(0.010)
0.75
(0.030)
0.076
(0.003)
microSMD190LR
microSMD200LR
microSMD250LR
microSMD350LR
microSMD450LR
LR3
LR3
LR3
LR2
LR3
3.00
(0.118)
3.43
(0.135)
0.50
(0.019)
1.00
(0.039)
2.35
(0.092)
2.80
(0.110)
0.25
(0.010)
0.75
(0.030)
0.076
(0.003)
3.00
(0.118)
3.43
(0.135)
0.50
(0.019)
1.00
(0.039)
2.35
(0.092)
2.80
(0.110)
0.25
(0.010)
0.75
(0.030)
0.076
(0.003)
3.00
(0.118)
3.43
(0.135)
0.50
(0.019)
1.00
(0.039)
2.35
(0.092)
2.80
(0.110)
0.25
(0.010)
0.75
(0.030)
—
3.00
(0.118)
3.43
(0.135)
0.50
(0.019)
1.00
(0.039)
2.35
(0.092)
2.80
(0.110)
0.25
(0.010)
0.75
(0.030)
0.076
(0.003)
Table LR4 — Physical Characteristics Operating Temperature Range -40°C to 85°C
Physical Characteristics
Terminal Pad Material
Gold with Nickel Underplate
Soldering Characteristics
Solder Heat Withstand
ANSI/J-STD-002 Category 3
per IEC-STD 68-2-20, Test Tb, Section 5, Method 1A
per IEC 695-2-2 Needle Flame Test for 20 sec.
Flammability Resistance
Recommended Storage Conditions
40°C max, 70% R.H. max; Devices May Not Meet Specified Ratings if Storage Conditions
Are Exceeded.
RoHS Compliant, ELV Compliant
Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
149
HF
PolySwitch Resettable Devices
Radial-Leaded Devices
Table LR5 — Packaging and Marking Information
Recommended Pad Layout Figures [mm (in)]
Part
Number
Tape & Reel
Quantity
Standard
Package
Part
Marking
Dimension
A (Nom)
Dimension
B (Nom)
Dimension
C (Nom)
Agency
Recognition
nanoSMDLR Series
Size 3216mm/1206mils
nanoSMD175LR
nanoSMD200LR
nanoSMD270LR
nanoSMD350LR
nanoSMD500LR
3,000
3,000
3,000
3,000
3,000
15,000
15,000
15,000
15,000
15,000
J
T
L
P
H
1.75 (0.069)
1.75 (0.069)
1.75 (0.069)
1.75 (0.069)
1.75 (0.069)
1.10 (0.043)
1.10 (0.043)
1.10 (0.043)
1.10 (0.043)
1.10 (0.043)
2.00 (0.079)
2.00 (0.079)
2.00 (0.079)
2.00 (0.079)
2.00 (0.079)
UL, CSA, TÜV
UL, CSA
UL, CSA, TÜV
UL, CSA, TÜV
UL, CSA, TÜV
microSMDLR Series
Size 3225mm/1210mils
microSMD190LR
microSMD200LR
microSMD250LR
microSMD350LR
microSMD450LR
3,000
3,000
3,000
3,000
3,000
15,000
15,000
15,000
15,000
15,000
None
2.65 (0.104)
2.65 (0.104)
2.65 (0.104)
2.65 (0.104)
2.65 (0.104)
1.00 (0.039)
1.00 (0.039)
1.00 (0.039)
1.10 (0.043)
1.00 (0.039)
2.00 (0.079)
2.00 (0.079)
2.00 (0.079)
2.00 (0.079)
2.00 (0.079)
UL, CSA
UL, CSA
UL, CSA
UL, CSA
UL
T
L
P
H
Figure LR4 — Recommended Pad Layout
Agency Recognition
UL
File # E74889 for all low resistivity SMD Devices
File # CA78165 for all low resistivity SMD Devices
CSA
TÜV
Certificate Number Available Upon Request (Certified to IEC 60730-1)
150
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
Halogen Free
RoHS Compliant, ELV Compliant
HF
PolySwitch Resettable Devices
Radial-Leaded Devices
Solder Reflow Recommendation
Classification Reflow Profiles
Profile Feature
Pb-Free Assembly
Figure LR5
Average Ramp-up Rate (TsMAX toTp)
Preheat
3°C/s max
• Temperature min (TsMIN
• Temperature max (TsMAX
• Time (tsMIN to tsMAX
)
150°C
)
200°C
60-120s
)
Time Maintained Above:
• Temperature (TL)
217°C
• Time (tL)
60-150s
260°C
Peak/ClassificationTemperature (Tp)
Time within 5°C of Actual PeakTemperature
Time (tp)
30s max
Ramp-down Rate
2°C/s max
8 mins max
Time 25°C to PeakTemperature
Note: All temperatures refer to topside of the package measured on the package
body surface.
Solder Reflow
•
Recommended reflow methods:
- IR
- Hot air
- Nitrogen
•
•
•
Recommended maximum paste thickness: 0.25mm (0.010 inch)
Devices can be cleaned using standard methods and aqueous solvents.
Experience has shown the optimum conditions for forming acceptable solder fillets occur when a reasonable amount of solder paste is placed
underneath each device’s termination. As such, we request that customers comply with our recommended solder pad layouts.
•
•
Customer should validate that the solder paste amount and reflow recommendations meet its application.
We request that customer board layouts refrain from placing raised features (e.g. vias, nomenclature, traces, etc.) underneath PolySwitch
devices. It is possible that raised features could negatively impact solderability performance of our devices.
Table LR6 —Tape and Reel Specifications in Millimeters
nanoSMDLR Series
EIA 481-1
microSMDLR Series
EIA 481-1
Description
W
8.0 0.30
4.0 0.10
4.0 0.10
2.0 0.05
1.95 0.10
3.50 +0.1/-0.08
4.35
8.0 0.30
4.0 0.10
4.0 0.10
2.0 0.05
2.9 0.10
3.55 0.10
4.35
P0
P1
P2
A0
B0
B1 mAx
D0
1.55 0.05
3.50 0.05
1.75 0.10
6.25
1.55 0.05
3.50 0.05
1.75 0.10
6.25
F
E1
E2 min
T mAx
T1 mAx
K0
0.3
0.3
0.1
0.1
0.89 0.10
185
1.27 0.10
185
A mAx
n min
W1
50
50
12.4 + 2.0/-.00
14.4
12.4 + 2.0/-.00
14.4
W2 mAx
RoHS Compliant, ELV Compliant
Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
151
HF
PolySwitch Resettable Devices
Radial-Leaded Devices
Figure LR6 — EIA ReferencedTaped Component Dimensions
Figure LR7 — EIA Referenced Reel Dimensions
152
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
Halogen Free
RoHS Compliant, ELV Compliant
HF
PolySwitch Resettable Devices
Radial-Leaded Devices
Part Numbering System
Warning :
• Users should independently evaluate the suitability of and test each product selected for their own application.
• Operation beyond the maximum ratings or improper use may result in device damage and possible electrical arcing and flame.
• These devices are intended for protection against damage caused by occasional overcurrent or overtemperature fault conditions and should not be used
when repeated fault conditions or prolonged trip events are anticipated.
•
Contamination of the PPTC material with certain silicone-based oils or some aggressive solvents can adversely impact the performance of the devices.
• Device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic, thermal, and mechanical
procedures for electronic components.
• PPTC devices are not recommended for installation in applications where the device is constrained such that its PTC properties are inhibited, for example
in rigid potting materials or in rigid housings, which lack adequate clearance to accommodate device expansion.
• Operation in circuits with a large inductance can generate a circuit voltage (Ldi/dt) above the rated voltage of the device.
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 shall not be used for, any purpose (including, without limitation, military, aerospace, medical, life-saving, life-sustaining
or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may
result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall
be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising
out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to
Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.
RoHS Compliant, ELV Compliant
Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
153
HF
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