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043703.5 PDF预览

043703.5

更新时间: 2024-11-28 14:56:27
品牌 Logo 应用领域
力特 - LITTELFUSE 过电流保护
页数 文件大小 规格书
3页 554K
描述
本产品系列100%无铅且符合RoHS标准,专用于为工作环境温度极高(最高150oC)的电路提供过电流保护。 通用型设计确保了卓越的高温稳定性和性能可靠性。 此外,Littelfuse陶瓷保险丝

043703.5 数据手册

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Surface Mount Fuses  
Ceramic Fuse > 437 Series  
RoHS Pb  
437 Series – 1206 Fast-Acting Fuse  
Description  
This 100% Lead-free, RoHS compliant and Halogen-free  
fuse series has been designed specifically to provide over  
current protection to circuits might encounter high working  
ambient temperatures (up to 150ºC).  
The general design ensures excellent temperature stability  
and performance reliability.  
In addition to this, the high I²t values typical of the  
Littelfuse Ceramic Fuse family ensure high inrush current  
withstand capability.  
Features  
• OperatingTemperature  
from -55ºC to +150ºC  
• Suitable for both leaded  
and lead-free reflow /  
wave soldering  
Agency Approvals  
• 100% Lead-free, Halogen-  
Free and RoHS compliant • UL Recognized to UL/  
CSA/NMX 248-1 and UL/  
Agency  
Agency File Number  
Ampere Range  
E10480  
29862  
0.250A - 8A  
0.250A - 8A  
CSA/NMX 248-14  
Applications  
• LCD Displays  
• Servers  
• Scanners  
• Data Modems  
• Printers  
Electrical Characteristics for Series  
% of Ampere  
Ampere Rating  
Rating  
Additional Information  
OpeningTime at 25ºC  
100%  
250%  
350%  
350%  
250mA - 8A  
750mA - 8A  
4 hours, Minimum  
5 seconds, Maximum  
5 seconds, Maximum  
1 second, Maximum  
250mA -500mA  
750mA - 8A  
ꢀatasꢁeet  
ꢀesources  
Saꢀꢁꢂes  
Electrical Specifications by Item  
Agency Approvals  
Ampere  
Rating  
(A)  
Max.  
Voltage  
Rating (V)  
Nominal  
Nominal  
NominalVoltage  
Drop At Rated  
Current (V)4  
Nominal Power  
Dissipation At Rated  
Current (W)  
Amp  
Code  
Interrupting Rating1  
Resistance Melting I2t  
(Ohms)2  
(A2Sec.)3  
0.25  
0.375  
0.5  
0.75  
1.0  
1.25  
1.5  
1.75  
2.0  
2.5  
3.0  
3.5  
4.0  
.250  
.375  
.500  
.750  
001.  
1.25  
01.5  
1.75  
002.  
02.5  
003.  
03.5  
004.  
005.  
0 0 7.  
008.  
125  
125  
63  
63  
63  
63  
63  
63  
63  
45  
45  
45  
45  
45  
32  
32  
2.29  
1.33  
0.908  
0.665  
0.42  
0.318  
0.209  
0.071  
0.058  
0.043  
0.033  
0.027  
0.022  
0.0159  
0.01  
0.003  
0.01  
0.018  
0.064  
0.1  
0.256  
0.324  
0.075  
0.225  
0.441  
0.506  
0.777  
1.024  
2.3  
0.78  
0.6  
0.52  
0.45  
0.41  
0.4  
0.39  
0.27  
0.2  
0.15  
0.14  
0.13  
0.13  
0.13  
0.13  
0.13  
0.195  
0.225  
0.26  
0.338  
0.41  
0.5  
0.585  
0.473  
0.4  
0.375  
0.42  
0.455  
0.52  
0.65  
0.91  
1.04  
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
50 A @ 125 V AC/DC  
50 A @ 63 V AC/DC  
50A @ 45V AC/63V DC  
50 A @ 32 V AC/35 V DC  
5.0  
7. 0  
8.0  
5.02  
7.23  
0.008  
Notes:  
1. AC Interrupting Rating tested at rated voltage with unity power factor. DC Interrupting Rating tested at rated voltage with time constant < 0.8 msec.  
2. Nominal Resistance measured with < 10% rated current.  
3. Contact Littelfuse if application transient surges are less than 1 ms.  
4. Nominal Voltage Drop measured at rated current after temperature has stabilized.  
Devices designed to carry rated current for 4 hours minimum. It is recommended that devices be operated continuously at no more than 80% rated current. See “Temperature Re-rating Curve”for additional re-rating information.  
Devices designed to be mounted with marking code facing up.  
© 2020 Littelfuse, Inc.  
Specifications are subject to change without notice.  
Revised: GD. 10/19/20  

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