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0438004.

更新时间： 2024-11-28 14:51:59
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力特 - LITTELFUSE 过电流保护
页数 文件大小 规格书
3页 493K
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

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0438004. 数据手册

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Surface Mount Fuses Datasheet  
438 Series  
0603 Fast-Acting Fuse  
RoHS Pb  
HF  
Description  
The 438 Series is a 100% Lead-free, RoHS compliant and  
Halogen-free fuse series designed specifically to provide over-  
current protection to circuits that operate under high working  
ambient temperature up to 150ºC.  
The general design ensures excellent temperature stability and  
performance reliability.  
The high I²t values which is typical in the Littelfuse Ceramic Fuse  
family ensure high inrush current withstand capability.  
Features & Benefits  
■ OperatingTemperature from  
■ Conforms to EN 60127-1 and  
-55ºC to +150ºC  
EN 60127-7  
■ 100% Lead-free, RoHS  
compliant and Halogen-free  
■ CE Mark indicates suitability  
for the European Market  
■ Suitable for both leaded  
and lead-free reflow / wave  
soldering  
■ UKCA Mark indicates suitability  
for the UK Market  
Additional Information  
■ Recognized to UL/CSA/NMX  
248-1 and UL/CSA/NMX 248-  
14  
Applications  
■ Handheld Electronics  
■ LCD Displays  
Resources  
Accessories  
Samples  
■ Hard Disk Drives  
■ SD Memory Cards  
Agency Approvals  
■ Battery Packs  
Agency  
Agency File Number  
Ampere Range  
E10480  
29862  
J50489122  
N/A  
0.250A – 6A  
0.250A – 6A  
0.250A - 6A  
0.250A - 6A  
0.250A - 6A  
Electrical Characteristics for Series  
% of Ampere Rating  
Ampere Rating  
OpeningTime at 25ºC  
100%  
250%  
0.25A – 6A  
0.25A – 6A  
4 Hours, Minimum  
N/A  
5 Seconds, Maximum  
Electrical Specifications by Item  
Ampere  
Rating  
(A)  
Nominal  
Nominal NominalVoltage Nominal Power  
Agency Approvals  
Amp Max.Voltage  
Code Rating (V)  
Interrupting Rating  
Resistance Melting I2t Drop At Rated  
Dissipation At  
(Ohms)2  
2.218  
1.247  
0.829  
0.466  
0.310  
0.200  
0.174  
0.1405  
0.051  
0.0324  
0.0255  
0.0205  
0.0170  
0.0115  
(A2Sec.)3  
0.0017  
0.0041  
0.0100  
0.0281  
0.0593  
0.0510  
0.0902  
0.1440  
0.1490  
0.1977  
0.2922  
0.4752  
0.6920  
0.7398  
1.3838  
Current (V)4  
0.550  
0.488  
0.486  
0.378  
0.351  
0.365  
0.368  
0.360  
0.107  
0.095  
0.093  
0.082  
0.079  
0.074  
Rated Current (W)  
0.250 .250  
0.375 .375  
0.500 .500  
0.750 .750  
1.00  
1.25  
1.50  
1.75  
2.00 002.  
2.50 02.5  
3.00 003.  
3.50 03.5  
4.00 004.  
5.00 005.  
6.00 006.  
63VDC  
63VDC  
63VDC  
63VDC  
63VDC  
63VDC  
63VDC  
63VDC  
32  
0.138  
0.183  
0.243  
0.284  
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
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
x
x
x
x
x
x
x
x
x
x
x
50A @ 63VDC  
50A @ 32VAC  
001.  
1.25  
01.5  
1.75  
0.351  
0.456  
0.552  
0.540  
0.214  
0.238  
0.279  
0.287  
0.316  
0.370  
32  
32  
32  
32  
32  
24  
50A @ 32VDC/12VAC  
50A @ 24VDC/12VAC 0.0085  
0.072  
0.432  
Notes:  
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.  
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. Nominal Melting I²t measured at 1 msec. opening time.  
Devices designed to be mounted with marking code facing up.  
4. Nominal Voltage Drop measured at rated current after temperature has stabilized.  
© 2023 Littelfuse, Inc.  
Specifications are subject to change without notice.  
Revised: GD. 08/11/23  
1
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