0448.750MR.
FUSE, SMD, 750mA, FAST ACTING
- Manufacturer: LITTELFUSE
- Product type: SMD Fuses
- Fuse Current: 750mA
- Product Range: NANO2 448 Series
- Fuse Case Style: 2410 (6125 Metric)
- Voltage Rating VAC: 125VAC
- Voltage Rating VDC: 125VDC
- Blow Characteristic: Very Fast Acting
- Breaking Capacity Current AC: 50A
- Breaking Capacity Current DC: 300A
| Delivery and price | |
|---|---|
| Units per pack | 1000 |
| Price | 0.799 € |
| Current stock | 10+ |
| Lead time | 30 days |
**Surface Mount Fuses** NANO[2®] > Very Fast-Acting > 448 Series ## **448 Series Fuse** ## **PS E** ~~WE <~~ ## ~~**Description**~~ The lead-free Nano[2] SMF Fuse is a very small, square surface mount fuse that is RoHS compliant and 100% leadfree. This product is fully compatible with lead-free solder alloys and higher temperature profiles associated with lead-free assembly. ## ~~**Features**~~ temperature range Low temperature de-rating ## ~~**Agency Approvals**~~ rating available (62mA to 15A) **==> picture [497 x 80] intentionally omitted <==** **----- Start of picture text -----**<br> ||||||||| |---|---|---|---|---|---|---|---| |AGENCY|AGENCY FILE NUMBER|AMPERE RANGE| |to 15A)| |E10480|62mA - 15A| |Applications| |LR29862|62mA - 15A| |é|Po| |or|PSE|NBK030205|1A - 10A|ee|NotebookLCD/PDP PCTV|e|WirelessTelecom systembasestation| **----- End of picture text -----**<br> ## ~~**Electrical Characteristics for Series**~~ **==> picture [216 x 60] intentionally omitted <==** **----- Start of picture text -----**<br> |||| |---|---|---| |% of Ampere| |Ampere Rating|Opening Time| |Rating| |100%|1/16 –15|4 hours, Minimum| |1/16 –10|5 sec., Maximum| |200%| |12 –15|20 sec., Maximum| **----- End of picture text -----**<br> equipment Battery charging circuit protection © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/448.html for current information. **448 Series** **49** Revised: January 7, 2009 **Introduction to Circuit ProtectionSurface Mount Fuses** NANO[2®] > Very Fast-Acting > 448 SeriesTransientology ## ~~**Electrical Specifcations by Item**~~ **==> picture [455 x 544] intentionally omitted <==** **----- Start of picture text -----**<br> Ampere Max Nominal Cold Nominal Agency Approvals<br>Voltage Interrupting<br>Rating(A) Amp Code Rating Rating Resistance (Ohms) I [2] Melting t (A [2] sec) PSE<br>(V)<br>0.062 .062 125 5.50 0.00023 x x<br>0.080 .080 125 4.42 0.00043 x x<br>0.100 .100 125 2.90 0.00082 x x<br>0.125 .125 125 2.58 0.00130 x x<br>0.160 .160 125 1.76 0.00280 x x<br>0.200 .200 125 1.40 0.00380 x x<br>0.250 .250 125 1.05 0.01520 x x<br>0.315 .315 125 0.7900 0.02650 x x<br>0.375 .375 125 0.7300 0.02400 x x<br>0.400 .400 125 0.4895 0.04160 x x<br>0.500 .500 125 0.3800 0.10000 x x<br>0.630 .630 125 0.2821 0.121 x x<br>50 amperes<br>0.750 .750 125 @125 VAC/VDC 0.2475 0.206 x x<br>0.800 .800 125 300 amperes 0.1907 0.272 x x<br>1.00 001. 125 @32 VDC 0.08630 0.441 x x x<br>1.25 1.25 125 PSE: 100 amperes 0.06619 0.900 x x x<br>@100VAC<br>1.50 01.5 125 0.06514 0.900 x x x<br>1.60 01.6 125 0.06261 1.122 x x x<br>2.00 002. 125 0.03529 0.812 x x x<br>2.50 02.5 125 0.02934 1.156 x x x<br>3.00 003. 125 0.02445 1.720 x x x<br>3.15 3.15 125 0.02300 1.810 x x x<br>3.50 03.5 125 0.02100 2.300 x x x<br>4.00 004. 125 0.01577 3.970 x x x<br>5.00 005. 125 0.01531 4.490 x x x<br>6.30 06.3 125 0.01044 12.10 x x x<br>7.00 007. 125 0.00900 13.92 x x x<br>8.00 008. 125 0.00780 18.33 x x x<br>35 amperes<br>@125 VAC<br>50 amperes<br>@125 VDC<br>10.00 010. 125 0.00700 28.00 x x x<br>300 amperes<br>@32 VDC<br>PSE: 100 amperes<br>@100VAC<br>12.00 012. 65 0.00533 47.59 x x<br>50 amperes<br>@65 VAC/VDC<br>15.00 015. 65 300 amperes 0.00394 96.10 x x<br>@24 VDC<br>**----- End of picture text -----**<br> Notes: - l[2] t calculated at 8ms. - Resistance is measured at 10% of rated current, 25ºC © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/448.html for current information. **448 Series** **50** Revised: January 7, 2009 **Surface Mount Fuses** NANO[2®] > Very Fast-Acting > 448 Series ## ~~**Temperature Rerating Curve**~~ **==> picture [243 x 196] intentionally omitted <==** Note: 1. Derating depicted in this curve is in addition to the standard derating of 25% for continuous operation. ## ~~**Average Time Current Curves**~~ **==> picture [245 x 305] intentionally omitted <==** **----- Start of picture text -----**<br> 100<br>10<br>1<br>0.1<br>0.01<br>0.001<br>0.1 1 10 100 1000<br>CURRENT IN AMPS<br>.062 A .080 A .100 A .125 A .160 A .200 A .250 A .315 A .375 A .40 A .50 A .63 A .75 A .80 A 1.00 A 1.25 A 1.50 A 1.60 A 2.00 A 2.50 A 3.00 A 3.15 A 3.50 A 4.00 A 5.00 A 6.30 A 7 A 8 A 10 A 12 A 15 A<br>TIME IN SECONDS<br>**----- End of picture text -----**<br> ## ~~**Soldering Parameters**~~ |Refow Condition|Refow Condition|Pb – Free assembly| |---|---|---| |Pre Heat|- Temperature Min (Ts(min))|150°C| ||- Temperature Max (Ts(max))|200°C| ||- Time (Min to Max) (ts)|60 – 120 secs| |Average ramp up rate (Liquidus Temp<br>(TL) to peak||5°C/second max.| |TS(max)to TL- Ramp-up Rate||5°C/second max.| |Refow|- Temperature (TL) (Liquidus)|217°C| ||- Temperature (tL)|60 – 90 seconds| |Peak Temperature (TP)||250+0/-5°C| |Time within 5°C of actual peak<br>Temperature (tp)||20 – 40 seconds| |Ramp-down Rate||5°C/second max.| |Time 25°C to peak Temperature (TP)||8 minutes max.| |Do not exceed||260°C| |||| |Wave Soldering Parameters||260°C Peak<br>Temperature, 10<br>seconds max.| **==> picture [244 x 151] intentionally omitted <==** **----- Start of picture text -----**<br> t P<br>T P<br>Critical Zone<br>Ramp-up TL to TP<br>T S(max) T L t L<br>Ramp-down<br>Preheat<br>T S(min)<br>t S<br>25<br>time to peak temperature Time<br>(t 25ºC to peak)<br>Temperature<br>**----- End of picture text -----**<br> © 2009 Littelfuse, Inc. **448 Series** **51** Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/448.html for current information. Revised: January 7, 2009 **Introduction to Circuit ProtectionSurface Mount Fuses** NANO[2®] > Very Fast-Acting > 448 SeriesTransientology ## ~~**Product Characteristics**~~ |**Materials**|Body: Ceramic<br>Terminations: Gold-plated Caps| |---|---| |**Product Marking**|Brand, Amperage Rating| |**Operating**<br>**Temperature**|-55oC to 125oC| |**Moisture Sensitivity**<br>**Level**|Level 1, J-STD-020C| |**Solderability**|MIL-STD-202, Method 208| |**Insulation**<br>**Resistance (after**<br>**Opening)**|MIL-STD-202, Method 302, Test Condition<br>A (10,000 ohms minimum)| |**Thermal Shock**|MIL-STD-202, Method 107, Test<br>Condition B, 5 cycles, -65oC to<br>125oC,15 minutes @ each extreme| |---|---| |**Mechanical Shock**|MIL-STD-202, Method 213, Test I:<br>Deenergized. 100G’s pk amplitude,<br>sawtooth wave 6ms duration, 3<br>cycles XYZ+xyz = 18 shocks| |**Vibration**|MIL-STD-202, Method 201: 0.03”<br>amplitude, 10-55 Hz in 1 min. 2hrs<br>each XYZ=6hrs| |**Moisture Resistance**|MIL-STD-202, Method 106, 10 cycles| |**Salt Spray**|MIL-STD-202, Method 101, Test<br>Condition B (48hrs)| |**Resistance to Soldering**<br>**Heat**|MIL-STD-202, Method 210, Test<br>condition B (10 sec at 260oC)| ## ~~**Dimensions**~~ ## ~~**Part Numbering System**~~ **==> picture [487 x 165] intentionally omitted <==** **----- Start of picture text -----**<br> 6.10 2.69<br>(.240") (.106") 0448 001. M R<br>F 2.69 SERIES<br>7 A (.106")<br>AMP Code [*]<br>1.45 Refer to Electrical<br>(.057") Characteristics table<br>6.86 QUANTITY Code<br>(.270") M = 1000 pcs<br>3.15 PACKAGING Code<br>(.124")<br>R = Tape and Reel<br>2.95 *Example:<br>1.96 (.116") 1.5 amp product is 044801.5MR<br>(1 amp product shown above).<br>(.077")<br>Recommended pad layout<br>**----- End of picture text -----**<br> ## ~~**Packaging**~~ **==> picture [507 x 54] intentionally omitted <==** **----- Start of picture text -----**<br> Quantity &<br>Packaging Option Packaging Specification Quantity<br> Packaging Code<br>12mm Tape and Reel EIA RS-481-1 (IEC 286, part 3) 1000 MR<br>**----- End of picture text -----**<br> © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/448.html for current information. **448 Series** **52** Revised: January 7, 2009
Updated at February 9, 2023
Founded in 1927 and headquartered in Chicago, Illinois, Littelfuse is a premier global manufacturer of circuit protection, power control, and sensing technologies. Widely recognized for pioneering the first small, fast-acting protective fuse, the company has grown into an industry leader whose highly reliable components are essential to modern industrial, transportation, and consumer electronics applications worldwide. At the core of the Littelfuse portfolio is an expansive and industry-leading range of circuit protection solutions. This encompasses a massive selection of traditional fuses, fuse holders, and resettable PTC thermistor fuses designed to safely interrupt overcurrent conditions. To defend against electrical overstress, Littelfuse also provides advanced transient voltage suppression (TVS) technologies, including thousands of specialized TVS diodes, TVS varistors, and gas discharge tubes (GDTs) that ensure robust defense against voltage spikes and environmental hazards. Beyond its foundational protection components, Littelfuse manufactures a diverse array of discrete semiconductors, sensors, and switching devices. Engineers rely on their high-performance thyristors, including TRIACs and SCRs, alongside power-efficient Schottky diodes and MOSFETs for demanding power control applications. Complemented by precision proximity sensors and highly reliable reed and solid-state relays, Littelfuse delivers the critical building blocks required for secure, efficient, and complete system design.
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