# Fuse, Surface Mount, 375 mA, Slow Blow, 125 V, 125 V, 2410 [6125 Metric]
**URL**: https://novapart.co/products/0449.375MR/fuse-surface-mount-375-ma-slow-blow-125-v-2410
**SKU**: 0449.375MR
**Manufacturer**: LITTELFUSE
**Category**: Circuit Protection || Fuses & Fuse Accessories || Fuses || SMD Fuses
**Price**: €1.0900
**Stock**: 200+
**Lead Time**: 85 days (indicative)
## Description
Fuse Current:375mA; Product Range:NANO2 449 Series; Voltage Rating VAC:125VAC; Voltage Rating V DC:125VDC; Blow Characteristic:Slow Blow; Fuse Case Style:SMD; Breaking Capacity Current AC:50
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2020) |
| Fuse Current | 375mA |
| Product Range | NANO2 Slo-Blo 449 Series |
| Fuse Case Style | 2410 [6125 Metric] |
| Voltage Rating Vac | 125VAC |
| Voltage Rating Vdc | 125VDC |
| Blow Characteristic | Slow Blow |
| Breaking Capacity Current Ac | 50A |
| Breaking Capacity Current Dc | 50A |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:1832068/)
**Surface Mount Fuses** NANO[2®] > Slo-Blo[®] Fuse > 449 Series
**RoHS Pb PSE** ~~[_1@ HF Wks <>~~
## 449 Series Fuse
## ~~**Description**~~
The lead free NANO[2®] Slo-Blo[®] fuse is RoHS compliant, Halogen Free and 100% lead-free. This product is fully compatible with lead-free solder alloys and higher temperature profiles associated with lead-free assembly. The Slo-Blo[®] fuse design has enhanced inrush withstand characteristics over the NANO[2®] Fast-Acting Fuse. The unique time delay feature of this fuse design helps solve the problem of nuisance “opening” by accommodating inrush currents that normally cause a fast-acting fuse to open.
## ~~**Features**~~
## ~~**Agency Approvals**~~
- Lead-free, Halogen free • Wide operating and RoHS compliant temperature range
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||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|AGENCY|AGENCY FILE NUMBER|AMPERE RANGE|
|• Small size|• Low temperature|
|Wk|us|E10480|0.375A - 5A|• Wide range of current|rerating|
|ratings available|
|PSE|NBK030205-E10480B|1A - 5A|
|Oo|
|Applications|
|Electrical Characteristics for Series|
|Secondary protection for space constrained applications:|
|% of Ampere|
|Rating|Opening Time|• Notebook PC|• Storage system|
|100%|4 hours, Minimum|• LCD/PDP TV|• Telecom system|
|• LCD monitor|• Wireless basestation|
|200%|1 sec., Min.; 60 sec., Max.|
|• LCD/PDP panel|• White goods|
|300%|0.2 sec., Min.; 3 sec., Max|
|• LCD backlight inverter|• Game console|
|800%|0.002 sec., Min.; 0.1 sec., Max.|
|• Portable DVD player|• Office Automation|
|equipment|
|• Power supply|
|Additional Information|• Battery charging circuit|
|• Networking|
|protection|
|• PC server|
|• Industrial equipment|
|• Cooling fan system|
|kd|
|Datasheet|Resources|Samples|
|Electrical Specifcations by Item|
|Ampere|Max|Nominal Cold|Nominal|pO|Agency Approvals|
|Voltage|Interrupting|
|Rating(A)|Amp Code|Rating|Rating|Resistance (Ohms)|I|[2]|Melting t (A|[2]|sec)|PSE|
|(V)|
|0.375|.375|125|1.5130|0.088|x|
|a|a|ee|eee|
|0.500|.500|125|0.7633|0.258|x|
|a|ee|es|
|0.750|.750|125|0.4080|0.847|x|
|a|eeee|
|1.00|001.|125|0.2516|1.76|x|x|
|a|esee|eee|
|1.50|01.5|125|0.1186|4.70|x|x|
|a|50A @125 VAC/VDC|ee|
|2.00|002.|125|0.0708|6.76|x|x|
|a|a|ee|ee|
|ee|PSE: 100A @100 VAC|es|
|2.50|02.5|125|0.0400|13.18|x|x|
|a|ee|ee|
|3.00|003.|125|0.0352|19.55|x|x|
|a|a|ee eee|
|ee|ee|
|3.50|03.5|125|0.0261|32.70|x|x|
|a|ee|ee|
|4.00|004.|125|0.0227|40.80|x|x|
|a|a|ee|ee|
|ee|es|
|5.00|005.|125|0.0171|59.59|x|x|
|a|reeeee|ee|
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Notes: - l[2] t calculated at 8ms. Resistance is measured at 10% of rated current, 25ºC
© 2018 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended. Revised: 06/06/18
**Surface Mount Fuses** NANO[2®] > Slo-Blo[®] Fuse > 449 Series
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Temperature Re-rating Curve
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Average Time Current Curves
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1000
100
10
1
0.1
0.01
0 1 10 100
CURRENT IN AMPERES
.375A .500A .750A 1A 1.5A2A 2.5A 3A3.5A 4A 5A
TIME IN SECONDS
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Note:
1. Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation.
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|||||||||||
|---|---|---|---|---|---|---|---|---|---|
|Soldering Parameters|
|Reflow Condition|Pb – Free assembly|t|P|
|T|P|
|Critical Zone|
|- Temperature Min (Ts(min))|150°C|Ramp-up|TL to TP|
|Pre Heat|- Time (Min to Max) (t- Temperature Max (Ts(max)s)|)|200°C60 – 120 secs|T|S(max)|T|L|t|L|
|Average ramp up rate (Liquidus Temp|3°C/second max.|Preheat|Ramp-down|
|(TL) to peak|T|S(min)|
|TS(max) to TL - Ramp-up Rate|3°C/second max.|t|S|
|Reflow|- Temperature (TL) (Liquidus)|217°C|25|
|- Temperature (tL)|60 – 90 seconds|time to peak temperature|Time|
|(t 25ºC to peak)|
|Peak Temperature (TP)|260|[+0/–5]|°C|
|Time within 5°C of actual peak|
|20 – 40 seconds|
|Temperature (tp)|
|Ramp-down Rate|5°C/second max.|
|Time 25°C to peak Temperature (TP)|8 minutes max.|
|Do not exceed|260°C|
|260°C Peak|
|Wave Soldering Parameters|Temperature,|
|3|seconds max.|
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© 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/06/18
**Surface Mount Fuses** NANO[2®] > Slo-Blo[®] Fuse > 449 Series
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Product Characteristics
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|**Materials**|**Body:**Ceramic
**Terminations:**Gold-plated Caps|
|---|---|
|**Product Marking**|Brand, Amperage Rating|
|**Operating**
**Temperature**
**Moisture**
**Sensitivity Level**|-55°C to 125°C
Level 1, J-STD-020|
|**Solderability**|MIL-STD-202, Method 208|
|**Insulation**
**Resistance (after**
**Opening)**|MIL-STD-202, Method 302, Test Condition
A (10,000 ohms minimum)|
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MIL-STD-202, Method 107, Test
Thermal Shock Condition B, 5 cycles, -65°C to
125°C, 15 minutes @ each extreme
MIL-STD-202, Method 213, Test I:
Deenergized. 100G’s pk amplitude,
Mechanical Shock
sawtooth wave 6ms duration, 3
cycles XYZ+xyz = 18 shocks
MIL-STD-202, Method 201: 0.03"
Vibration amplitude, 10-55 Hz in 1 min. 2hrs
each XYZ=6hrs
Moisture Resistance MIL-STD-202, Method 106, 10 cycles
MIL-STD-202, Method 101, Test
Salt Spray
Condition B (48hrs)
Resistance to Soldering MIL-STD-202, Method 210, Test
Heat condition B (10 sec at 260°C)
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Dimensions
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Part Numbering System
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0449 001. M R
6.86 6.10 ± .20
(.270") (.240") SERIES
3.15 1 A AMP Code *
(.124") F T Refer to Electrical charac-
teristics table
1.45
2.95 (.057") QUANTITY Code
1.96 (.116") M = 1000 pcs
(.077") 2.69 ± .25
PACKAGING Code
Recommended pad layout (.106")
R = Tape and Reel
2.69 ± .25 *Example:
(.106") 0.375 Amp product is 0449 .375 MR
(1 amp product shown above).
Packaging
Quantity &
Packaging Option Packaging Specification Quantity
Packaging Code
12mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 1000 MR
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**Disclaimer Notice -** Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.
© 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/06/18
## Links
- [View this product on Novapart](https://novapart.co/products/0449.375MR/fuse-surface-mount-375-ma-slow-blow-125-v-2410)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/littelfuse/0449-375mr/fuse-smd-0-375a-slow-blow/dp/1832068)
---
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