SC250-145T [SOCAY]
Radial Lead Resettable Polymer PTCs;
| 型号： | SC250-145T |
| 厂家： | 
Socay Electornics Co., Ltd. |
| 描述： | Radial Lead Resettable Polymer PTCs |
| 文件： | 总4页 (文件大小：399K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Radial Lead Resettable Polymer PTCs
SC250 Series
Description
The SC250 Series is designed to protect against short
duration high voltage fault currents (power cross or power
induction surge) typically found in telecom applications
(250Vrms). The series can be used to help telecom
networking equipment meet the protection requirements
specified in ITU K.20 and K.21.
Features
u
0.08-0.18A hold current range
u
u
u
u
250VAC interrupt rating
Fast time-to-trip
Binned and shorted narrow resistance ranges available
RoHS compliant, Lead-Free and Halogen-Free
Applicable
u
u
u
u
u
Customer Premises Equipment (CPE)
Central Office (CO) / telecom centers
Power ports
LAN / WAN equipment
Access equipment
Electrical Parameters
Maximum Time
To Trip
Resistance
V maxi
(Vac)
I max
(A)
P dtyp.
(W)
Part Number
I hold (A)
I trip (A)
Current
Time
R min
R max
R 1max
(A)
(Sec.)
(mΩ)
(mΩ)
(mΩ)
SC250-080
SC250-090
SC250-110
SC250-120
SC250-120T
SC250-145
SC250-145T
SC250-180C
SC250-180S
0.08
0.09
0.11
0.16
0.18
0.22
0.24
0.24
0.29
0.29
0.65
0.65
250
250
250
250
250
250
250
250
250
3.0
3.0
0.8
0.8
1.0
1.0
1.0
1.0
1.0
1.5
1.5
0.35
4.0
11.0
9.0
6.0
4.0
6.0
3.0
4.5
1.6
1.6
22.0
18.0
12.0
8.0
33.0
27.0
16.0
16.0
16.0
14.0
14.0
4.0
0.35
1.00
1.00
1.00
1.00
1.00
3.00
3.00
5.0
3.0
0.75
1.50
0.75
2.50
1.50
0.50
0.50
0.12
0.12
0.145
0.145
0.18
0.18
3.0
3.0
12.0
6.0
3.0
3.0
9.0
10.0
10.0
3.2
3.2
4.0
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 maxi= Maximum voltage that can be safely placed across a device in its tripped state under specified fault conditions.
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.
SOCAY Electronics Co., Ltd.
www.socay.com
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Revision September 12, 2013
1 / 4
Radial Lead Resettable Polymer PTCs
SC250 Series
Temperature Rerating Chart – I hold (A)
Ambient Operation Temperature
Part Number
-40°C
-20°C
0°C
25°C
40°C
Hold Current (A)
0.066
50°C
60°C
70°C
85°C
SC250-080
SC250-090
SC250-110
SC250-120
SC250-120T
SC250-145
SC250-145T
SC250-180C
SC250-180S
0.124
0.140
0.171
0.186
0.186
0.225
0.225
0.279
0.279
0.110
0.124
0.151
0.165
0.165
0.199
0.199
0.247
0.247
0.095
0.107
0.131
0.143
0.143
0.172
0.172
0.213
0.213
0.080
0.090
0.110
0.120
0.120
0.145
0.145
0.180
0.180
0.059
0.066
0.081
0.088
0.088
0.106
0.106
0.131
0.131
0.051
0.058
0.071
0.077
0.077
0.093
0.093
0.115
0.115
0.044
0.050
0.061
0.066
0.066
0.080
0.080
0.099
0.099
0.033
0.037
0.046
0.050
0.050
0.060
0.060
0.074
0.074
0.074
0.091
0.099
0.099
0.119
0.119
0.147
0.147
Average Time Current Curves
Temperature Rerating Curve
Temperature (°C)
Current in Amperes
A=SC250-080/SC250-090
B=SC250-110
C=SC250-120/SC250-120T
D=SC250-145/SC250-145T
E=SC250-180/SC250-180C
SOCAY Electronics Co., Ltd.
www.socay.com
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Revision September 12, 2013
2 / 4
Radial Lead Resettable Polymer PTCs
SC250 Series
Test Procedures and Requirement
Test
Test Conditions
In still air @25±2°C
Accept/Reject Criteria
Resistance
Hold Current
Time to Trip
R
min≤R≤Rmax
60 min, at Ihold, In still air @25±2°C
Specified current, Vmax, @25±2°C
220V / Imax, 20 cycle
No trip
T≤Maximum Time To Trip
Frequency Current withstand
Failure mode
Resistance of the variation of the poor value:≤30%
No buming
V maxi / 5A, 60 minute
Soldering Parameters
Refer to the condition recommended
Pre-Heating Zone by the manufacturer. Max. ramping
rate should not exceed 4°C/Sec
Max. solder temperature should not
exceed 260°C
Soldering Zone
Cooling Zone
Cooling by natural convection in air
Physical Specifications
Lead Material
Tin-plated Copper
Soldering
Characteristics
Solder ability per MIL-STD-202, Method 208E
Cured, flame retardant epoxy polymer meets UL 94V-0
requirements.
Insulating Material
Device Labeling
Marked with ‘SC’, voltage, current rating
Part Numbering
Part Marking
SOCAY Electronics Co., Ltd.
www.socay.com
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Revision September 12, 2013
3 / 4
Radial Lead Resettable Polymer PTCs
SC250 Series
Dimensions
Figure1
Figure2
A
B
C
D
Lead (dia)
Part
Number
Packaging
(Bulk Pack)
Figure
Inches
Max.
mm
Max.
6.0
6.0
6.5
6.5
6.5
7.0
7.0
9.5
8.8
Inches
Max.
mm
Max.
10.0
10.0
10.5
10.5
10.5
11.0
11.0
13.5
12.8
Inches
Typ.
mm
Typ.
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
Inches
Max.
mm
Max.
4.6
4.6
4.6
4.6
4.6
4.6
4.6
3.8
3.8
Inches
Mm
SC250-080
SC250-090
SC250-110
SC250-120
SC250-120T
SC250-145
SC250-145T
SC250-180C
SC250-180S
Figure1
Figure1
Figure2
Figure2
Figure2
Figure2
Figure2
Figure1
Figure2
0.236
0.236
0.256
0.256
0.256
0.276
0.276
0.374
0.346
0.394
0.394
0.413
0.413
0.413
0.433
0.433
0.531
0.504
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.181
0.181
0.181
0.181
0.181
0.181
0.181
0.150
0.150
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
1000
1000
1000
1000
1000
1000
1000
1000
1000
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.
SOCAY Electronics Co., Ltd.
www.socay.com
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Revision September 12, 2013
4 / 4
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