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Surface Mount Fuses  
PICO® SMF Fuse > 459 Series  
PS  
E
459 Series PICO® Very Fast-Acting Surface Mount Fuse  
Description  
The 459 Series Very Fast-Acting SMF is based on Littelfuse  
PICO® fuse technology, though offered in a surface mount  
package.  
This series of devices meets the requirements of the  
RoHS directive.  
Features  
•ꢀꢀVeryꢀFast-Acting  
•ꢀꢀWideꢀcurrentꢀratingꢀrange:ꢀ62mAꢀtoꢀ5A  
•ꢀꢀWideꢀoperatingꢀtemperatureꢀrange  
•ꢀꢀLowꢀtemperatureꢀrerating  
•ꢀꢀRoHSꢀcompliant  
Agency Approvals  
AꢁꢂNCꢃ  
AꢁꢂNCꢃ FIꢄꢂ NꢅꢀbꢂR  
AꢀꢆꢂRꢂ RANꢁꢂ  
62mA - 5A  
ꢂ10480  
ꢄR29862  
Applications  
62mA - 5A  
1A - 5A  
•ꢀ Wirelessꢀbasestation  
•ꢀ Networkꢀequipment  
•ꢀꢀTelecomꢀequipmentꢀ  
PS  
E
NbK030205-ꢂ10480b  
Electrical Characteristics for Series  
Additional Information  
% of Ampere  
OpeningTime  
4 hours, Minimum  
Rating  
100%  
200%  
300%  
1 second, Maximum  
0.1 second, Maximum  
Datasheet  
Resources  
Samples  
Electrical Specifications by Item  
ꢀax  
Agency Approvals  
Ampere  
Rating  
(A)  
Amp  
Code  
Voltage  
Rating  
(V)  
Interrupting  
Rating  
Nominal Cold  
Resistance (Ohms)  
Nominal ꢀelting  
I2t (A2sec)  
PS  
E
0.062  
0.125  
0.250  
0.375  
0.500  
0.750  
1.00  
.062  
.125  
.250  
.375  
.500  
.750  
001.  
01.5  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
7.0000  
1.7000  
0.6650  
0.3950  
0.2800  
0.1750  
0.1250  
0.0800  
0.0468  
0.0350  
0.0290  
0.0240  
0.0200  
0.0155  
0.000075  
0.00163  
0.0106  
0.0254  
0.0546  
0.155  
0.281  
0.650  
0.421  
0.721  
1.23  
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 VAC  
x
x
x
x
x
x
x
x
1.50  
300 A @125 VDC  
2.00  
002.  
02.5  
003.  
03.5  
004.  
005.  
2.50  
3.00  
3.50  
1.65  
4.00  
2.35  
5.00  
3.90  
© 2013 Littelfuse, Inc.  
Specifications are subject to change without notice.  
Revised: 12/19/13  
Surface Mount Fuses  
PICO® SMF Fuse > 459 Series  
Temperature Rerating Curve  
AverageTime Current Curves  
100  
10  
1
0.1  
Note:  
1. Rerating depicted in this curve is in addition to the standard rerating of 25% for  
continuous operation.  
0.01  
Soldering Parameters  
Wave Soldering  
Reflow Soldering  
260°C, 10 seconds max.  
260°C, 30 seconds max.  
0.001  
0.05 0.1  
1
10  
100  
CURRENT IN AMPERES  
Product Characteristics  
Dimensions  
Body: MoldedThermoplastic  
Terminations: 100%Tin-plated Copper  
Materials  
5 A 1 2 5 V  
4.32  
(.170")  
Solderability  
MIL-STD-202, Method 208  
F
L
4 5 9  
8.26  
(.325")  
B 3  
®
®
2.03  
(.080")  
Body: Brand Logo, Current Rating,  
Voltage Rating, Series Code, Date  
Code, Agency Approved Logo  
7.24(.285")  
REF.  
2.97  
(.117")  
Product Marking  
1.65  
(.065")  
3.05  
(.120")  
4.95  
Moisture Sensitivity  
Operating Temp.  
Level 1 J-STD - 020C  
–55OC to 125OC  
(.195")  
RECOMMENDED  
PAD LAYOUT  
1.30(.051")  
REF.  
MIL-STD-202, Method 213, Test  
Condition I (100 G’s peak for 6 msecs.)  
Shock  
Part Numbering System  
MIL-STD-202, Method 201  
Vibration  
Salt Spray  
(10–55 Hz, 0.06 inch total excursion)  
0459 .500 UR  
MIL-STD-202, Method 101,  
Test Condition B (48 hours)  
SERIES  
Insulation Resistance  
(After Opening)  
MIL-STD-202, Method 302,  
(10,000 ohms minimum at 100 volts)  
AMP Code  
Refer to Electrical  
MIL-STD-202, Method 107,  
Test Condition B (–65 to 125°C)  
Thermal Shock  
Characteristics table  
MIL-STD-202, Method 106, High  
Humidity (90-98 RH), Heat (65°C)  
qUANTITY Code  
UR = 500 pcs  
Moisture Resistance  
ER = 2500 pcs  
Example:  
Packaging  
PACKAGING Code  
0.62 Amp product is  
0459 .062 UR (.5 Amp  
product shown above).  
R =Tape and Reel  
ꢆackaging  
Option  
ꢆackaging  
Specification  
Quantity &  
ꢆackaging Code  
Quantity  
500  
UR  
ER  
12mm  
EIA RS-481-1  
Tape and Reel (IEC 286, part 3)  
2500  
© 2013 Littelfuse, Inc.  
Specifications are subject to change without notice.  
Revised: 12/19/13