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250R120 PDF预览

250R120

更新时间: 2024-02-13 14:34:39
品牌 Logo 应用领域
力特 - LITTELFUSE /
页数 文件大小 规格书
6页 383K
描述
POLYFUSE Resettable PTCs Radial Leaded

250R120 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

250R120 数据手册

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POLYFUSE® Resettable PTCs  
Radial Leaded  
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  
• RoHS compliant and  
lead-free  
• Fast time-to-trip  
• 0.08 – 0.18 Hold current  
range, 60VDC operating  
voltage  
Agency Approvals  
• Binned and sorted narrow  
resistance ranges available  
• 250VAC interrupt rating  
AGENCY  
AGENCY FILE NUMBER  
E183209  
Applications  
R50082521  
• Customer Premises  
Equipment (CPE)  
• LAN/WAN Equipment  
• Access equipment  
• Central Office (CO)/  
Telecom Centers  
Electrical Characteristics  
Maximum Time  
Agency  
Resistance  
R typ  
P
Vmax  
/ V  
To Trip  
Approvals  
madx.  
(W)  
I hold  
(A)  
I trip  
(A)  
I max  
(A)  
Part Number  
R min  
(Ω)  
R 1max  
(Ω)  
V
Current  
Time  
int  
op  
(A)  
0.35  
0.35  
1
(Sec.)  
(Ω)  
22  
22  
8
250R080T  
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
3
15  
14  
4
33  
33  
16  
16  
14  
16  
16  
16  
16  
16  
14  
12  
14  
14  
4
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
250R120  
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  
250R145  
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
3
1
1
3
250R145-RA  
250R145-RB  
250R145T  
250R180  
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  
10  
10  
1.8  
1.8  
1
250R180T  
1
20  
4.5  
*typical value  
C: coated device  
T: pre-tripped device  
250R Series  
www.littelfuse.com  
©2006 Littelfuse  
Specifications are subject to change without notice.  
Electronics Designers Guide  

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