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250R120U PDF预览

250R120U

更新时间: 2024-02-08 18:51:22
品牌 Logo 应用领域
力特 - LITTELFUSE 电阻器非线性电阻器过载保护
页数 文件大小 规格书
7页 619K
描述
POLY-FUSE Resettable PTCs

250R120U 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active包装说明:RADIAL LEADED, HALOGEN FREE & ROHS COMPLIANT
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8533.40.80.70风险等级:0.48
Is Samacsys:N其他特性:4 TO 16 OHMS MEASURED AT 20 DEG CEL
JESD-609代码:e3安装特点:THROUGH HOLE MOUNT
端子数量:2最高工作温度:85 °C
最低工作温度:-40 °C封装形状:RECTANGULAR PACKAGE
包装方法:BULK额定(AC)电压(URac):250 V
电阻:4 Ω电阻器类型:PTC RESETTABLE FUSE
子类别:Non-linear Resistors表面贴装:NO
端子面层:Matte Tin (Sn)端子位置:RADIAL
端子形状:WIRE热敏电阻器应用:OVERLOAD PROTECTION
Base Number Matches:1

250R120U 数据手册

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Equipment (CPE)  
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telecom centers  
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POLY-FUSE® Resettable PTCs  
Radial Leaded > 250R Series  
250R Series  
Description  
The 250R 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  
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range, 60VDC operating  
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resistance ranges available  
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Agency Approvals  
AGENCY  
AGENCY FILE NUMBER  
E183209  
Applications  
R50120008  
Electrical Characteristics  
MaximumTime  
ToTrip  
Agency  
Resistance  
P d  
typ.  
(W)  
Vmax  
/ V  
Approvals  
I hold  
(A)  
I trip  
(A)  
I max  
(A)  
Part Number  
R min  
(Ω)  
R typ  
(Ω)  
R 1max  
(Ω)  
V
Current Time  
int  
op  
(A)  
0.35  
0.35  
1
(Sec.)  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
250R080  
0.08  
0.08  
0.12  
0.12  
0.12  
0.12  
0.12  
0.12  
0.12  
0.12  
0.145  
0.145  
0.145  
0.145  
0.18  
0.18  
0.16  
0.16  
0.24  
0.24  
0.24  
0.24  
0.24  
0.24  
0.24  
0.24  
0.29  
0.29  
0.29  
0.29  
0.65  
0.65  
250/60  
250/60  
250/60  
250/60  
250/60  
250/60  
250/60  
250/60  
250/60  
250/60  
250/60  
250/60  
250/60  
250/60  
250/60  
250/60  
3
3
1
1
3
14  
15  
4
22  
22  
8
33  
33  
16  
16  
14  
16  
16  
16  
16  
16  
14  
12  
14  
14  
4
250R080T  
250R120  
3
3
1
1.5  
1.0  
0.85  
0.7  
0.8  
0.7  
1
250R120-RA  
250R120-RC  
250R120-RF  
250R120-R1  
250R120-R2  
250R120-R3  
250R120T  
3
1
1
7
9
3
1
1
5.4  
6
7.5  
10.5  
9
3
1
1
3
1
1
6
3
1
1
8
10.5  
10  
12  
6
3
1
1
8
3
1
1
1.2  
2.5  
5
7
250R145  
3
1
1
3
250R145-RA  
250R145-RB  
250R145T  
3
1
1
3
5.5  
6
3
1
1
2.5  
2.0  
21  
4.5  
5.4  
0.8  
1.4  
3
1
1
7.5  
2.2  
3.9  
250R180  
10  
10  
1.8  
1.8  
1
250R180T  
1
20  
4.5  
Items withT at end of part number = pre-tripped device. See Part Ordering Number System section of this data sheet for additional information.  
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Vop= The device regular operation voltage  
R min = Minimum resistance of device in initial (un-soldered) state.  
R typ =Typical resistance of device in initial (un-soldered) state.  
Caution: Operation beyond the specified rating may result in damage and possible arcing  
and flame.  
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97  
© 2011 Littelfuse, Inc  
250R Series  
Specifications are subject to change without notice.  
Please refer to www.littelfuse.com/series/250R.html for current information.  
Revised: August 31, 2011  

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