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  • 北京元坤伟业科技有限公司

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产品型号0434004.NRP的Datasheet PDF文件预览

Surface Mount Fuses  
Thin Film > 0603 Size > Very Fast Acting > 434 Series  
®
434 Series Fuse  
®
Description  
The 434 series fast-acting surface mount fuse series is  
an ultra small (0603 size) thin-film device designed for  
secondary protection of circuits used in space constrained  
applications such as hand-held portable electronic devices.  
For RoHS compliant and lead-free design, please refer to  
the Littelfuse 467 series thin film fuse.  
Features  
tꢀ 5IFꢀ4MJN-JOFꢀꢁꢂꢁꢃꢀ  
fuse is an extremely  
tꢀ 5IFꢀMPXFSꢀIFJHIUꢀQSPmMFꢀ  
produces a flat surface for  
improved performance in  
pick-and-place operations  
and an alternate solution  
for height critical  
small, low profile design  
(0603 chip size) utilizing  
thin-film technology to  
achieve precise control of  
electrical characteristics.  
Agency Approvals  
Agency  
Agency File Number  
Ampere Range  
E10480  
LR29862  
250mA - 3A  
250mA - 3A  
applications.  
®
®
Applications  
Secondary protection for space constrained applications  
such as:  
Electrical Characteristics for Series  
tꢀ $FMMꢀQIPOFT  
tꢀ %7%ꢀQMBZFST  
% of Ampere  
tꢀ #BUUFSZꢀQBDLT  
tꢀ %JHJUBMꢀDBNFSBT  
tꢀ )BSEꢀEJTLꢀESJWFTꢄ  
OpeningTime at 25OC  
Rating  
100%  
4 hours, Minimum  
5 seconds, Maximum.  
0.2 seconds, Maximum  
200%  
300%  
Electrical Specifications by Item  
Max  
Agency Approvals  
Ampere  
Rating  
(A)  
Nominal Cold  
Resistance  
(Ohms)  
Nominal  
Melting  
Amp  
Code  
Voltage  
Rating  
(V)  
Interrupting  
Rating  
I2t (A2sec)  
®
®
0.250  
0.375  
0.500  
0.680  
0.750  
1.00  
.250  
.375  
.500  
.680  
.750  
001.  
1.25  
01.5  
32  
0.3750  
0.2650  
0.1903  
0.1250  
0.1140  
0.0720  
0.0540  
0.0480  
0.0390  
0.0360  
0.0280  
0.0230  
0.0190  
0.0170  
0.0130  
0.0030  
0.0053  
0.0087  
0.0109  
0.0171  
0.0212  
0.0320  
0.0526  
0.0661  
0.1040  
0.1750  
0.1980  
0.2650  
0.3520  
1.2970  
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
32  
32  
32  
32  
32  
32  
32  
32  
32  
32  
32  
32  
32  
32  
50A @32 V AC/DC  
1.25  
1.50  
1.75  
1.75  
002.  
02.5  
003.  
03.5  
004.  
005.  
2.00  
2.50  
3.00  
3.50  
4.00  
5.00  
35A @32 V AC/DC  
1. Measured at 10% of rated current, 25ºC.  
2. Measured at rated voltage.  
©2008 Littelfuse, Inc.  
31  
434 Series  
Specifications are subject to change without notice.  
Please refer to www.littelfuse.com for the most current information  
Revision: February 13, 2008  
Surface Mount Fuses  
Thin Film > 0603 Size > Very Fast Acting > 434 Series  
Temperature Rerating Curve  
AverageTime Current Curves  
100  
10  
1
0.1  
0.01  
0.001  
0.1  
1
10  
100  
CURRENT IN AMPERES  
Soldering Parameters -Wave Soldering  
Reflow Condition  
-Temperature Min (Ts(min)  
Pb – Free assembly  
)
150°C  
Pre Heat -Temperature Max (Ts(max)  
-Time (Min to Max) (ts)  
)
200°C  
60 – 180 secs  
Average ramp up rate (LiquidusTemp  
(TL) to peak  
5°C/second max  
TS(max) toTL - Ramp-up Rate  
5°C/second max  
217°C  
-Temperature (TL) (Liquidus)  
Reflow  
-Temperature (tL)  
60 – 150 seconds  
250+0/-5 °C  
PeakTemperature (TP)  
Time within 5°C of actual peak  
Temperature (tp)  
20 – 40 seconds  
Ramp-down Rate  
5°C/second max  
8 minutes Max.  
260°C  
Time 25°C to peakTemperature (TP)  
Do not exceed  
©2008 Littelfuse, Inc.  
32  
Revision: February 13, 2008  
434 Series  
Specifications are subject to change without notice.  
Please refer to www.littelfuse.com for the most current information  
Surface Mount Fuses  
Thin Film > 0603 Size > Very Fast Acting > 434 Series  
Product Characteristics  
Withstands 5 cycles of – 55OC to  
Body: Epoxy Substrate  
Terminations: 100%Tin over Nickel over Copper  
Element Cover Coat: Conformal Coating  
– 55OC to 90OC. Consult temperature rerating  
curve chart. For operation above 90°C contact  
Littelfuse.  
Thermal Shock  
Vibration  
125OC  
Materials  
Per MIL-STD-202F  
Operating  
Temperature  
Insulation Resistance  
(After Opening)  
Greater than 10,000 ohms  
Resistance to Soldering  
Heat  
Withstands 60 seconds above  
200OC and up to 260OC, maximum  
Humidity  
MIL-STD-202F Method 103B Condition D  
Dimensions  
Part Marking  
1.60  
Amp  
Code  
Marking  
Code  
(.063")  
.305  
(.012")  
.127  
(.005")  
.254 (.010")  
.250  
.375  
.500  
.680  
.750  
001.  
1.25  
01.5  
D
E
F
Sn/Pb  
Coating  
.279  
(.011")  
X
G
H
J
MARKING CODE VARIES  
WITH AMPERAGE RATING  
(SEE CHART)  
Sn/Pb  
Sn/Pb  
Cu  
.813  
(.032")  
K
L
1.75  
002.  
02.5  
003.  
03.5  
004.  
005.  
1.09  
(.043")  
N
O
P
R
S
T
1.02  
(.040")  
3.20  
(.126")  
2.54  
(.100")  
1.02  
(.040")  
.762  
(.030")  
1.09  
(.043")  
1.09  
(.043")  
WAVE SOLDER  
REFLOW SOLDER  
Part Numbering System  
0434 1.75 NR  
SERIES  
QUANTITY CODE  
AMP CODE  
Packaging  
Quantity &  
Packaging Code  
Packaging Option  
Packaging Specification  
Quantity  
8mmTape and Reel  
EIA RS-481-2 (IEC 286, part 3)  
5000  
NR  
©2008 Littelfuse, Inc.  
33  
Revision: February 13, 2008  
434 Series  
Specifications are subject to change without notice.  
Please refer to www.littelfuse.com for the most current information  
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