# Fuse, PCB Leaded, 1.6 A, 125 V, PICO II 251 Series, 125 V, Very Fast Acting, Axial Leaded

![Product image](https://novapart.co/image/farnell:1596452/)

**URL**: https://novapart.co/products/025101.6MAT1L/fuse-pcb-leaded-16-a-125-v-pico-ii-251-series-very
**SKU**: 025101.6MAT1L
**Manufacturer**: LITTELFUSE
**Category**: Circuit Protection || Fuses & Fuse Accessories || Fuses || PCB Fuses
**Price**: €0.4650
**Stock**: 200+
**Lead Time**: 64 days (indicative)

## Description

Fuse Current:1.6A; Voltage Rating VAC:125VAC; Product Range:PICO II Series; Voltage Rating V DC:125VDC; Blow Characteristic:Very Fast Acting; Fuse Case Style:Axial Leaded; Breaking Capacity Curren

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (17-Dec-2014) |
| Fuse Current | 1.6A |
| Product Range | PICO II 251 Series |
| Fuse Case Style | Axial Leaded |
| Voltage Rating Vac | 125VAC |
| Voltage Rating Vdc | 125VDC |
| Blow Characteristic | Very Fast Acting |
| Breaking Capacity Current Ac | 50A |
| Breaking Capacity Current Dc | 300A |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1596452/)

**Cartridge, Axial Lead, and Socket Fuses** PICO[®] II > Very Fast-Acting > 251/253 Series 

## ~~_~~ **RoHS 251/253 Series, PICO[®] II, Very Fast-Acting Fuse** 

## **PS** ® ~~AE~~ **®** << **E TUV** 

## ~~**Description**~~ 

The PICO[®] II very fast-acting fuse is designed to meet an extensive array of performance characteristics in a space-saving subminiature package. 

## ~~**Features**~~ 

## temperature range 

(62mA- 15A) 

## ~~**Applications**~~ 

## ~~**Agency Approvals**~~ 

|**Agency**|**Agency File Number**|**Ampere Range**|
|---|---|---|
|®<br>A\|E10480|62mA - 15A|
|**®**<br>@|LR 29862|62mA - 15A|
|**PS**<br>**E**|JET 1896-31007-1001|1A - 5A|
|**TUV**|J02037794|500mA - 10A|



Secondary protection for space constrained applications 

## ~~**Electrical Characteristics**~~ 

|% of Ampere<br>Rating|Ampere Rating|Opening Time|
|---|---|---|
|100%|1/16–15|4 hours, Minimum|
||1/16–7|1 sec., Maximum|
|200%|10|3 sec., Maximum|
||12-15|10 sec., Maximum|



## ~~**Electrical Characteristics**~~ 

|||||||||Voltage Drop<br>®<br>AMG|®<br>AMG|**PS**<br>**E**<br> |<|
|---|---|---|---|---|---|---|---|---|---|---|
|.062<br>ee<br>a|251.062<br>~~ee~~<br>~~ee~~|253.062<br>~~ee~~<br>~~ee~~|125<br>~~ee~~|300 amperes<br>at rated<br>voltage VDC<br>50 amperes at<br>rated voltage<br>VAC<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~eee~~<br>~~eee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~eee ~~<br>~~eee~~<br>~~ee~~|7.000<br>~~a~~<br>~~a~~|0.000113<br>~~es~~|1.4|x|x||
|.125<br>ee<br>a<br>a|251.125<br>~~ee~~<br>~~ee~~<br>~~ee~~|253.125<br>~~ee~~<br>~~ee~~<br>~~ee~~|125<br>~~ee~~<br>~~ee~~||1.700<br>~~a~~<br>~~a~~<br>~~ee~~|0.00174<br>~~es~~<br>~~ee~~|0.285<br>~~ee~~|x|x||
|.250<br>a<br>a<br>a|251.250<br>~~ee~~<br>~~ee~~<br>~~ee~~|253.250<br>~~ee~~<br>~~ee~~<br>~~ee~~|125<br>~~ee~~<br>~~ee~~<br>~~ee~~||0.665<br>~~a~~<br>~~ee~~<br>~~ee~~|0.0116<br>~~ee~~|0.24<br>~~ee~~|x|x||
|.375<br>a<br>a<br>a|251.375<br>~~ee~~<br>~~ee~~<br>~~ee~~|253.375<br>~~ee~~<br>~~ee~~<br>~~ee~~|125<br>~~ee~~<br>~~ee~~<br>~~ee~~||0.395<br>~~ee~~<br>~~ee~~<br>~~a~~|0.0296<br>~~ee ~~<br>~~ee~~|0.215<br> ~~ee~~<br>~~ee~~|x<br>~~ee~~|x<br>~~ee~~|~~ee~~|
|.500<br>a<br>a<br>a|251.500<br>~~ee~~<br>~~ee~~<br>~~es~~|253.500<br>~~ee~~<br>~~ee~~<br>~~ee~~|125<br>~~ee~~<br>~~ee~~<br>~~ee~~||0.280<br>~~ee~~<br>~~a~~<br>~~a~~|0.0598<br>~~ee~~|0.2165<br>~~ee~~|x<br>~~ee~~|x<br>~~ee~~|~~ee~~|
|.750<br>a<br>a<br>a|251.750<br>~~ee~~<br>~~es~~<br>~~es~~|253.750<br>~~ee~~<br>~~ee~~<br>~~ee~~|125<br>~~ee~~<br>~~ee~~<br>~~eee~~||0.175<br>~~a ~~<br>~~a~~<br>~~a~~|0.153<br> ~~ee~~<br>~~ee~~|0.176<br>~~ee~~<br>~~ee~~|x<br>~~ee~~<br>~~ee~~|x<br>~~ee~~<br>~~ee~~|~~ee~~<br>~~ee~~|
|001.<br>a<br>a<br>a<br>a|251001.<br>~~es~~<br>~~es~~<br>~~a~~|253001.<br>~~ee~~<br>~~ee~~<br>~~ee~~|125<br>~~ee~~<br>~~eee~~||0.128<br>~~a~~<br>~~a~~<br>~~a~~|0.256<br>~~ee~~<br>~~ee~~|0.194<br>~~ee~~<br>~~ee~~|x<br>~~ee~~<br>~~ee~~<br>~~ee~~|x<br>~~ee~~<br>~~ee~~<br>~~ee~~|x<br>~~ee~~<br>~~ee~~|
|1.25<br>a<br>a<br>a<br>a|2511.25<br>~~es~~<br>~~a~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|125<br> ~~eee~~<br>~~eee~~||0.100<br>~~a ~~<br>~~a~~<br>~~a~~|0.390<br> ~~ee~~<br>~~ee~~|0.2<br>~~ee~~<br>~~ee~~|x<br>~~ee~~<br>~~ee~~<br>~~ee~~|x<br>~~ee~~<br>~~ee~~<br>~~ee~~|x<br>~~ee~~<br>~~ee~~|
|01.5<br>a <br>a<br>a<br>a|25101.5<br> ~~a~~<br>~~ee~~<br>~~ee~~|25301.5<br>~~ee~~<br>~~ee~~<br>~~ee~~|125<br>~~eee~~<br>~~ee~~||0.0823<br>~~a ~~<br>~~a~~<br>~~a~~|0.587<br> ~~ee~~|0.21<br>~~ee~~|x<br>~~ee~~<br>~~ee~~|x<br>~~ee~~<br>~~ee~~|x<br>~~ee~~|
|002.<br>a<br>a<br>a|251002.<br>~~ee~~<br>~~ee~~<br>~~ee~~|253002.<br>~~ee ~~<br>~~ee~~<br>~~ee~~|125<br> ~~eee~~<br>~~ee~~<br>~~ee~~||0.0473<br>~~a~~<br>~~a~~<br>~~a~~|0.405<br>~~ee~~|0.141<br>~~ee~~|x<br>~~ee~~|x|x|
|02.5<br>a<br>a<br>a|25102.5<br>~~ee~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|125<br> ~~ee~~<br>~~ee~~<br>~~ee~~||50 amperes at<br>0.0360<br>~~a~~<br>~~a~~<br>~~a~~|0.721<br>~~ee~~|0.132<br>~~ee~~|x<br>~~ee~~|x|x|
|003.<br>a<br>a<br>a|251003.<br>~~ee~~<br>~~ee~~<br>~~ee~~|253003.<br>~~ee ~~<br>~~ee~~<br>~~ee~~|125<br> ~~ee~~<br>~~ee~~<br>~~ee~~||0.0290<br>~~a~~<br>~~a~~<br>~~ee~~|1.19<br>~~ee~~|0.131<br>~~ee~~|x<br>~~ee~~|x|x|
|03.5<br>a<br>a<br>ee|25103.5<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>|~~ee ~~<br>~~ee~~<br>~~ee~~|125<br> ~~ee~~<br>~~ee~~<br>~~ee~~||0.0240<br>~~a~~<br>~~ee~~<br>~~a~~|1.58|0.1205|x|x|x|
|004.<br>a<br>ee<br>a|251004.<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>|253004.<br>~~ee ~~<br>~~ee~~<br>~~ee~~|125<br> ~~ee~~<br>~~ee~~<br>~~eee~~||0.0204<br>~~ee~~<br>~~a~~<br>~~ee~~|2.45<br>~~ee~~|0.114<br>~~ee~~|x<br>~~ee~~|x<br>~~ee~~|x<br>~~ee~~|
|005.<br>ee<br>a<br>a|251005.<br>~~ee~~<br>~~ee~~<br>~~a~~|253005.<br>~~ee~~<br>~~ee~~<br>~~ee~~|125<br>~~ee~~<br>~~eee~~||0.0155<br>~~a~~<br>~~ee~~<br>~~a~~|4.14<br>~~ee~~|0.11<br>~~ee~~|x<br>~~ee~~|x<br>~~ee~~|x<br>~~ee~~|
|007.<br>ee <br>a <br>a<br>a|251007.<br>~~ee~~<br> ~~ee~~<br> ~~a~~<br>~~ee~~<br>|253007.<br>~~ee ~~<br>~~ee ~~<br>~~ee~~<br>~~ee~~|125<br> ~~ee~~<br> ~~eee~~<br>~~eee~~||0.0105<br>~~a~~<br> ~~ee~~<br>~~a~~<br>~~a~~|10.4<br>~~ee~~|0.102<br>~~ee~~|x<br>~~ee~~|x<br>~~ee~~|x<br>~~ee~~|
|010.<br> <br>a<br>a<br>ee|251010.<br> ~~a~~<br>~~ee~~<br>~~a~~|253010.<br>~~ee~~<br>~~ee~~<br>~~**ee**~~|125<br>~~eee~~||0.00705<br>~~a~~<br>~~a~~<br>~~**a**~~|25.5<br>~~**e**e~~|0.1<br>~~ee~~|x|x|x|
|012.<br>a<br>ee|251012.<br>~~ee~~<br>~~a~~<br>~~ee~~|~~ee~~<br>~~**ee**~~|32<br>~~eee~~<br>~~ee~~||0.0055<br>~~a~~<br>~~**a**~~|45.2<br>~~**e**e~~<br>~~s~~|0.0878<br>~~ee~~<br>~~es~~|x<br>es|x|x|
|015.<br>a <br>ee|251015.<br>~~ee~~<br> ~~a~~<br>~~ee~~|253015.<br>~~ee ~~<br>~~**ee**~~|32<br> ~~eee~~<br>~~ee~~||0.00446<br>~~a~~<br>~~**a**~~|68.8<br>~~**e**e~~<br>~~s~~|0.071<br>~~ee~~<br>~~es~~|x<br>es|x|x|



Note:  Higher ampere ratings are available. Please contact Littelfuse Technical Support or your Littelfuse products representative for assistance. 

©2008 Littelfuse, Inc. 

**1** 

**251/253 Series** 

**Specifcations are subject to change without notice. Please refer to** www.littelfuse.com for the most current informationhttp://www.littelfuse.com/series/251.html or /253.html for current information. 

Revised: April 23, 2008 

**Cartridge,  Axial Lead,  and Socket Fuses** PICO[®] II > Very Fast-Acting > 251/253 Series 

## ~~**Temperature Rerating Curve**~~ 

**==> picture [243 x 189] intentionally omitted <==**

**==> picture [261 x 320] intentionally omitted <==**

**----- Start of picture text -----**<br>
Average Time Current Curves<br>100<br>10<br>1<br>0.1<br>0.01<br>0.001<br>0.05 0.1 1 10 100 1000<br>CURRENT IN AMPERES<br>1/16A 1/8A 1/4A 3/8A1/2A 3/4A1A 1 1/4A1 1/2A2A2 1/2A3A 3 1/2A4A 5A 7A 10A12A 15A<br>TIME IN SECONDS<br>**----- End of picture text -----**<br>


## ~~**Soldering Parameters - Wave Soldering**~~ 

## **Recommended Process Parameters:** 

**==> picture [243 x 171] intentionally omitted <==**

**----- Start of picture text -----**<br>
300<br>280<br>260<br>240<br>220<br>200<br>180<br>160<br>140<br>120<br>100<br>80<br>60<br>40<br>20<br>0<br>Time (Seconds)<br>Preheat Time Cooling Time<br>Dwell Time<br>Temperature (°C) - Measured on bottom side of board 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240<br>**----- End of picture text -----**<br>


**==> picture [244 x 111] intentionally omitted <==**

**----- Start of picture text -----**<br>
Wave<br>Lead-Free Recommendation<br>Parameter<br>Preheat:<br>(Depends on Flux Activation Temperature) (Typical Industry Recommendation)<br>    Temperature Minimum: 100° C<br>    Temperature Maximum: 150° C<br>    Preheat Time: 60-180 seconds<br>Solder Pot Temperature: 260° C Maximum<br>Solder Dwell Time: 2-5 seconds<br>**----- End of picture text -----**<br>


## **Recommended Hand-Solder Parameters:** 

Solder Iron Temperature:  350° C +/-  5°C Heating Time:  5 seconds max. 

**Note:  These devices are not recommended for IR or Convection Reflow process.** 

©2008 Littelfuse, Inc. **Specifcations are subject to change without notice.** Please refer to http://www.littelfuse.com/series/251.html r /253.html for current information.Please refer to www.littelfuse.c **o** m for the most current information 

**2** 

**251/253 Series** 

Revised: April 23, 2008 

**Cartridge, Axial Lead, and Socket Fuses** PICO[®] II > Very Fast-Acting > 251/253 Series 

## ~~**Product Characteristics**~~ 

**==> picture [433 x 493] intentionally omitted <==**

**----- Start of picture text -----**<br>
Encapsulated, Epoxy-Coated   Operating Temperature –55 [O] C to 125 [O] C<br>Materials Body: Wire Leads. Pure Tin coated<br>copper wire leads<br>Shock<br>Solderability MIL-STD-202, Method 208<br>milliseconds)<br>MIL-STD-202. Method 211. Test Condition<br>Lead Pull Force<br>A (will withstand a 7 lb. axial pull test). Vibration Hz); Method 204,<br>Moisture Sensitivity  (55-2000 Hz at 10<br>J-STD 020 MSL Rating 2<br>Level<br>Moisture Resistance<br>Resistance to Soldering<br>Heat and up to 260 [O]<br>Flammability Rating UL 94V0<br>Dimensions Part Numbering System<br>62.7 (2.468") 0251 xxxx N R T1 L<br>a 27.78 52.4 (2.062")* | 27.78<br>(1.094") 7.11 (.280") (1.094")<br>Series<br>**0.64 (.025") 2.80 (.11") 251 = Standard type<br>1 A L F 253 = Military type<br>ou |<br>6.35 (.25") 5.0 (.197") 6.35 (.25") Current Rating<br>tape tape Refer to Amp Code column of<br>1 A L F Electrical Characteristics Table<br>Quantity<br>251 series markings N = 5000<br>P  = 2000<br>M = 1000<br>L F 1 A H  = 100<br>V  = 5<br>Type of Packaging<br>253 series markings<br>R = Reel<br>A = Ammo Pack<br>X = Loose Pack<br>Lead Length<br>T1: 52.4mm (2.062”)*<br>RoHS<br>Packaging<br>Quantity &<br>Packaging Option Packaging Specification<br> Packaging Code<br>*T1: 52.4mm (2.062") Tape and Reel EIA 296 Please refer to available quantities<br>above in "Part Numbering System”<br>**----- End of picture text -----**<br>


|**Operating Temperature**|–55[O]C to 125[O]C|
|---|---|
|**Shock**|MIL-STD-202, Method 213, Test<br>Condition I (100 G’s peak for 6<br>milliseconds)|
|**Vibration**|MIL-STD-202, Method 201 (10–55<br>Hz); Method 204, Test Condition C<br>(55-2000 Hz at 10 G's Peak)|
|**Moisture Resistance**|MIL-STD-202, Method 106|
|**Resistance to Soldering**<br>**Heat**|Withstands 60 seconds above 200OC<br>and up to 260[O]C, maximum|
|**Flammability Rating**|UL 94V0|



- ** .025” diameter for 1/16–10A, .032” diameter for 12–15A. 

©2008 Littelfuse, Inc. 

**3** 

**251/253 Series** 

**Specifcations are subject to change without notice. Please refer to** www.littelfuse.com for the most current informationhttp://www.littelfuse.com/series/251.html or /253.html for current information. 

Revised: April 23, 2008 



## Links

- [View this product on Novapart](https://novapart.co/products/025101.6MAT1L/fuse-pcb-leaded-16-a-125-v-pico-ii-251-series-very)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/littelfuse/025101-6mat1l/fuse-quick-blow-1-6a/dp/1596452)
---

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