Radial Lead Resettable Polymer PTCs

Radial Lead Resettable Polymer PTCs
UN6 Series
Description
UN6 series radial leaded PTCs are designed to provide
resettable over-current protection for USB, Low voltage
electrical equipment applications. With maximum 6 volts and
maximum 40-ampere short circuit rating.
Features
u
u
u
u
u
RoHS compliant, Lead-Free and Halogen-Free
40A short circuit rating
6V operating voltage
Fast time-to-trip
Meets all USB protection requirements
Applicable
u
u
u
u
Computers and peripherals
USB hubs ,ports and peripherals
Power ports
General electronics
Electrical Parameters
Part Number
I hold (A)
I trip
(A)
V max
(Vdc)
I max
(A)
P dtyp.
(W)
Maximum Time
To Trip
Resistance
Current
(A)
Time
(Sec.)
R min
(mΩ)
R max
(mΩ)
R 1max
(mΩ)
UN6-050
0.50
1.00
6
40
0.45
1.50
10
200
450
675
UN6-065
0.65
1.30
6
40
0.50
1.95
10
120
270
400
UN6-075
0.75
1.50
6
40
0.55
2.25
10
110
230
345
UN6-090
0.90
1.80
6
40
0.60
2.70
10
90
180
270
UN6-110
1.10
2.20
6
40
0.70
3.30
10
70
140
210
UN6-120
1.20
2.40
6
40
0.75
3.60
10
70
140
210
UN6-135
1.35
2.70
6
40
0.80
4.05
10
55
110
150
UN6-160
1.60
3.20
6
40
0.90
4.80
10
45
90
115
UN6-185
1.85
3.70
6
40
1.00
5.55
12
40
80
100
UN6-250
2.50
5.00
6
40
1.20
7.50
12
27
55
70
I hold= Hold current: maximum current device will pass without tripping in 25°C still air.
I trip= Trip current: minimum current at which the device will trip in 25°C still air.
V max= Maximum voltage device can withstand without damage at rated current (Imax)
I max= Maximum fault current device can withstand without damage at rated voltage (Vmax)
Pdtyp.= Power dissipated from device when in the tripped state at 25°C still air.
R min= Minimum resistance of device in initial (un-soldered) state.
R max= Maximum resistance of device in initial (un-soldered) state.
R 1max= Maximum resistance of device at 25°C measured one hour after tripping.
Caution: Operation beyond the specified rating may result in damage and possible arcing and flame.
UN Semiconductor Co., Ltd.
Revision October 18, 2013
www.unsemi.com.tw
1/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Radial Lead Resettable Polymer PTCs
UN6 Series
Temperature Rerating Chart – I hold (A)
Ambient Operation Temperature
Part Number
-40°C
-20°C
0°C
25°C
40°C
50°C
60°C
70°C
85°C
Hold Current (A)
UN6-050
0.73
0.65
0.58
0.50
0.42
0.39
0.34
0.31
0.26
UN6-065
0.94
0.85
0.75
0.65
0.54
0.50
0.44
0.40
0.34
UN6-075
1.09
0.98
0.86
0.75
0.62
0.58
0.51
0.46
0.39
UN6-090
1.31
1.17
1.04
0.90
0.75
0.69
0.61
0.55
0.47
UN6-110
1.60
1.43
1.27
1.10
0.91
0.85
0.75
0.67
0.57
UN6-120
1.74
1.56
1.38
1.20
1.00
0.92
0.82
0.73
0.62
UN6-135
1.96
1.76
1.55
1.35
1.12
1.04
0.92
0.82
0.70
UN6-160
2.32
2.08
1.84
1.60
1.33
1.23
1.09
0.98
0.83
UN6-185
2.68
2.41
2.13
1.85
1.54
1.42
1.26
1.13
0.96
UN6-250
3.63
3.25
2.88
2.50
2.08
1.93
1.70
1.53
1.30
Average Time Current Curves
A=UN6-075
B=UN6-090
C=UN6-110
D=UN6-120
Temperature Rerating Curve
E=UN6-135
F=UN6-160
G=UN6-185
H=UN6-250
Test Procedures and Requirement
UN Semiconductor Co., Ltd.
Revision October 18, 2013
www.unsemi.com.tw
2/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Radial Lead Resettable Polymer PTCs
UN6 Series
Test
Test Conditions
Accept/Reject Criteria
Resistance
In still air @25±2°C
Rmin≤R≤Rmax
Hold Current
60 min, at Ihold, In still air @25±2°C
No trip
Time to Trip
Specified current, Vmax, @25±2°C
T≤Maximum Time To Trip
Trip Cycle Life
Vmax, Imax,100 cycles
No arcing or burning
Trip Endurance
Vmax,24hours
No arcing or burning
Soldering Parameters
Pre-Heating Zone
Refer to the condition recommended
by the manufacturer. Max. ramping
rate should not exceed 4°C/Sec
Soldering Zone
Max. solder temperature should not
exceed 260°C
Cooling Zone
Cooling by natural convection in air
Physical Specifications
Lead Material
Soldering
Characteristics
Insulating Material
Device Labeling
Tin-plated Copper clad steel
Solder ability per MIL-STD-202, Method 208E
Cured, flame retardant epoxy polymer meets UL 94V-0
requirements.
Marked with ‘UN voltage, current rating
Part Marking
Part Numbering
UN XX - XXX
Trademark
I hold Current
UN XX
XXX
Voltage Rating (Vdc)
I hold Current
Voltage Rating (Vdc)
Series Name
Dimensions
UN Semiconductor Co., Ltd.
Revision October 18, 2013
www.unsemi.com.tw
3/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Radial Lead Resettable Polymer PTCs
UN6 Series
Figure1
Figure2
A
B
C
D
Lead (dia)
mm
(Max.)
mm
(Max.)
mm
(Typ.)
mm
(Max.)
mm
Part
Number
Figure
Packaging
UN6-050
Figure1
6.0
11.3
5.1±0.5
3.0
0.5
1000
UN6-065
Figure1
6.0
12.0
5.1±0.5
3.0
0.5
1000
UN6-075
Figure1
7.00
12.0
5.1±0.5
3.0
0.5
1000
UN6-090
Figure2
6.50
11.5
5.1±0.5
3.0
0.5
1000
UN6-110
Figure2
7.00
12.0
5.1±0.5
3.0
0.5
1000
UN6-120
Figure2
7.20
12.2
5.1±0.5
3.0
0.5
1000
UN6-135
Figure2
6.50
14.5
5.1±0.5
3.0
0.5
1000
UN6-160
Figure2
8.80
13.8
5.1±0.5
3.0
0.5
1000
UN6-185
Figure2
8.80
15.5
5.1±0.5
3.0
0.5
1000
UN6-250
Figure2
10.00
16.0
5.1±0.5
3.0
0.5
1000
(Bulk Pack)
Warning
u This product should not be used in an application where the maximum interrupt voltage or maximum interrupt current in a fault
condition, Operation beyond the maximum rating or improper use may result in device damage and possible electrical arcing and
flame.
u A PPTC device is not a fuse, It is a nonlinear thermistor that limits current, Because under a fault condition all PPTC devices go
into a high resistance state but not open circuit hazardous voltage may be present at PPTC.
u The devices are intended for protection against occasional over-current or over-temperature fault conditions and should not be
used when repeated fault conditions or prolonged trip events.
u In most application, power must be removed and the fault condition cleared in order to reset a PPTC device.
u PPTC devices are not recommended to be installed in applications where the device is constrained such that its PPTC
properties are inhibited, for example in rigid potting materials or Add devices surface coating, Bundled devices ontology, which
lack adequate clearance to accommodate device expansion.
u Contamination on of the PPTC material with certain silicone-based oils or some aggressive solvents can adversely impact the
performance of the devices. For example, Organic solvents to cleaning.
UN Semiconductor Co., Ltd.
Revision October 18, 2013
www.unsemi.com.tw
4/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.